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Grundig 19 VLC 2000 T CRT Television User Manual

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4. 2 MB15A02 105 6 04094 1 RN5VL45C 1 12 AT29CO20 90TI 1015 19 1 8 LC73872M 1 3 4 28C5108 1250243 Q10 28K508NV K52 13 14 DTAL44EE ais 210 022 31 25 4619 Q30 28K1588 Q36 28K1824 1 12 19 25111 7 10 15 HSC277 D9 11 25304 D21 155373 D302 303 305 HVC350B TX RX UNIT X57 5870 10 2 163 4 Ic 81350HG KD 1 10 AT2408N10S12 5 30622M4102GP 6 C75W51FU 1 1 UPB1509GV Q2 2SC4226 R24 23 4 Q11 2sc4617 s 015 24 25 DTC114EE aig 35 166 026 14 Q32 28A1862 GR Q301 2SK1215 E 2 4 25 05 D6 MA360 D13 14 DAN235E D22 158154 400 4 03 104 TA31136FN IC8 PST9140NR 1014 TC35453F 1 17 X9C10381 as 28C4988 29 17 33 34 2 144 12 28 4649 P 016 28 DTA114YE 920 21 UMG3N UPA572T Q35 UPA672T D3 HVU131 D8 62 Dis 30 2019 05 RBTOGF 40 EF POWER MODULE 0 Txt 5 96 4 5 H RST _ RF BUFFER t m Qi C 4 ELL IC P IN EE ee RX 0V RF DRIVER d Ko RL 470p 25 5108 22 0 75V 5 0 TX
5. 2 DISPLAY UNIT X54 3250 10 Component Side View DISPLAY UNIT X54 3250 10 Foil Side View T DISPLAY UNIT 3950 10 DISPLAY UNIT X54 3250 10 Component Side View Foil Side View Address Address 3 5 6 7 8 25 4617 5 7 S 9 R5209 Ceos 2SB1132 Q R gt Ce 10 LC75823W 11 J72 0663 02 S LED direction n Component Side Id Component Side Foil Side ncs 41 E 14 B C D E F G H K L M N R 5 TK 260G 270G PC BOARD VIEW TX RX UNIT X57 5870 XX Component Side View 0 10 TK260G K M 0 11 TK 270G K 0 21 TK 270G M e m eee m TX RX UNIT X57 5870 XX Component Side View Ref NO Address C1 8E m C3 6F C5 40 C6 4P C10 4N 50 C12 50 C13 70 C14 4L C15 6M C16 7K C17 C18 6J 19 8J C71 013 6G nas PE 205 015 6E 50 4 75 026 8K V 82 St 76 030 4 o Q31 8N 5 032 5D E 033 50 En Q34 5E 035 3L B 036 6M 015 017 7M 019 7M 022 4 gt im D23 8M 5 DIR A ZZ TA73W01FU 2SK1824 9 1035 TC35453F TC75W51FU 5 8 1 7368 LC73872M Component side Pa
6. E E E ER EE 4 ee E E E E E E E E e E ee ee E E E ee E E mue ee E E SM ms E A mH m a s E Lm e Me ee E E E SE E e e ee m E e ee ee ee E n G E E E e ue E TEES ee E E e ee E ee E E E Mus ee ee ue E ee er e ee pt eee TK 260G Note Component marked with a dot e are Parts of pattern 1 U V X Y 2 AL TK 270G SCHEMATIC DIAGRAM
7. gt Y lt gt LAMP LA l P l Power on tone yes no First digit time gt 1 41 LA P Tt LAI P M Contorol tone yes no M First digit delay 1 4 gt LAMP LAMP 48 Warning tone yes no Rise time with 0 1 gt lt gt LAMP 4 1 Time Out Timer Dial ID 4 1 LA LAI P 4 Pre alert time of DTMF key LAMP lt gt AMP 4 4 1 Rekey time gt hold time 8 4 Memory Reset Mode dt p iI p i This mode is used to clear data for functions that can be set Reset time M Store amp Send in Self Programming Mode or to return to reset values default lt gt 1 i j p pe EE Pressing when SELF is shown sets the display to germ CANCEL E e Turning the encoder alternately switches the display T TEM E between gt Battery Save onjoi signalin Pressing 0 when READY is shown clears the data and 1 14 m y id sets the display to CLEAR Signaling M Inter mediate code Pressing O again returns the display to SELF Pressing 0 when CANCEL is shown returns the display to SELF without resetting the da
8. 5n S M 125 25304 C62 126 C63 2sK508NV K52 E 328 BUSSY 3 SR ala DC 94 58 1 33 i TOV 328 DC SW 4 av 12 T t gt 98k R60 Ze geo 3 220 Du oy ai be 014 5 ale 5 OU Al 12 CEA bei 1 od 846 150k 0 5 016 5 x cURRENT STEERING DTC144EE B PLL SYSTEM E 28 464 1 E DTAL14YE oTo alo nad 2504617 5 sil 2ND IF W N SW SETS ke 5 nao nio m a Ufa Loro 151 Tx ov ON WHEN NARROW gt o s Odo 1 EES 1 TRIPLER 52 4 NJM2904V DC SW kat 177 1794 05 Se 5 5 Tal 9 abo 319 519 Exs PETS Q17 a13 1 046 C94 VC sc H R61 R223 8T SI T 5 14 9 8 2ND IF W N SW SETS DTA144EE 5 1 A gt SAVE Ou 6 3 ON WHEN WIDE o lt E 2 3 47k 22 BE TX 5 OV H 555 Re z UU 2 16 8MHz 100 RERS 5 19 COMPARATOR 1M Cl 916 213 14 RF SW 2ND WIDE NARROW CABC sl 85709 H 3 7 6 3 D E 6 3V 872 10k g
9. DC SW LED RED DC SW LED GREEN BUSSY 4 9V GEN 9 TX 4 9V 3 on FREQUENCY CONTROL Ol R38 25 243 3 gt DIVIDER 2 Glo E H 024 925 1 124 R43 oio aio e 024570 350 DTC114EE DTCI14EE L32 100 Q8 mio a o E 1 R51 5 120 R36 amp 5607 86 100 1 DE MODULATION UMCA OSCILLATION RX R T A 299 kN ANT SWITCH 10u ik 47 TX 0V 122 100 92 R42 L23 aia WE a 1 2 85 bla R48 R252 R253 RX 5 OV aio T SEET c501 R501 1 2 H AACN it e iio 220k e pa D 125 25304 C62 126 C63 2SK508NV K52 428 A ue BEN 2205 bog 2014 ap T 5 9 DC SW 4 RT m 4 R45 86 525 1 2 3 100n 220 33n E ss M D12 014 pi H 55 826 BS 12 9196 92 5 E od 50 11 ole Yr o R46 150k 0 5 Zar a Ei 527 215 We j 5 PLL SYSTEM AR E 016 2418 _ SEES 52 STEERING SEENEN Zelt 18 DTC144EE E S 330 55 859 4 5 6 S gt TX 5 1V DTA114YE 9 ory om 3 EIER N 100 2 1C501 528 C503 R503 z Nos xi g
10. let 922 xri to 0302 305 Q301 D303 2SC4649 N P 25 4619 171 0546 05 HVC350B 2SK1215 E HVC350B FM IF IC L e EE eck IMIXO 49 OSMHz Q19 35 166 450K 923 58 UMC4 5R APC TUNE SR TUNE SR SRC 3 0 014 2 54 3250219 DAN235E DAN235E 58 1 16 2 2 1 19 m TC75WS1PU TATSWOIFU 1 TATSWOIPU 2TONE 2SK1824 LPF TO 43 44 5 4 0506 508 509 9501 25 1132 0 8 510 511 512 9502 25 4617 5 513 514 516 SB BACK LIGHT 1 15 2 2 1 TATSWOLFU 1 41 DER d 25 4619 1 BSHIPT 1 1 x2 AT2408N10812 5 179 0479 05 3 58MHz TC35453F IC14 base band IC 9 8304MHz AT29C020 90T1 30622M4102GP micro contlorer COMP RESSOR 1017 DTMP 2TONE X9C103S1 DIGITAL POTENTIOMETER 1 6 BU4094BCFV Ics BU4094BCFV AUXS 6 SB 5 Koch OPTION CONNECTOR 57 58 260 270 TK 260G 270G LEVEL DIAGRAM KNB 14 KNB 15A Ni Cd BATTERY p E 3 gt Mg gt r gt o 2 IS EG 2 _ ES Gs E gt Ia E e cuml lt 55556 0 5 Poo
11. MOD 1kHz 1 5 2 SSG AF VTVM Oscilloscope ANT 124 SINAD or more Squelch open Adjust Wide Narrow 1 Adj item SQL3 Adjust SSG OUT 124dBm 0 141 2 Adj item SQL3 Adjust 124dBm 0 141 Squelch Tight Adjust Wide 1 Adj item SQL9 Adjust SSG OUT 117dBm 0 Narrow 1 Adj item 5019 SSG OUT 117dBm 0 Squelch Check Panel Test Mode 1 CH Sig 1 1 SQ Level SQL5 SSG OUT 118dBm 0 28 2 SSG OUT OFF Encoder knob squelch Adjust to the squelch threshold point Adjust to the squelch threshold point Squelch must be opened Squelch must be closed 39 TK 260G 270G Adjustment points TX RX unit X57 587 Component side view VR1 Frequency adjustment 40 ADJUSTMENT Foil Side View rm Battery terminal 305 1506 1 TC1 Transmit lock voltage adjustment TC2 Receive lock voltage adjustment L305 L306 Band pass filter waveform adjustment L307 Band pass filter test point CV LV Lock voltage adjustment terminal Fig 2 Adjustment points K L M N R 5 PCBOARDVIEW TK 260G 270G
12. 81 indui HSS 104 pedes 40001 esn uonoes 4 ul 1ndui LNY Ov eui 1299 U09 jv ui CHAL 3v S i 9121 LELO S i 2 IN31SAS Z 5 21 W4 Zen 751 DN SUJAUJ08L 0 Ss wugpzzi l GHNOSP 221 s ZHINS6 67 Lal ZHINSO Z91 e 60 59 TK 260G 270G OPTIONS KMC 17 Speaker microphone KMC 17 Parts List Parts No Description A02 0907 08 Case Front A02 0908 08 Case Rear B09 0316 08 Cap D10 0606 08 Lever PTT E11 0421 05 Phone jack E30 3138 08 Curl cord F07 0889 08 Silicon rubber PTT 053 0569 08 Packing MIC case J29 0440 08 Clip assy J39 0601 08 Packing MIC N46 2605 60 Screw Clip assy N46 3016 60 Screw Case N80 2005 41 Screw MIC unit 550 1415 05 Tact switch PTT 107 0290 05 Loudspeaker 1W 80 191 0534 08 Condenser MIC KMC 21 Speaker microphone KMC 21 Parts List Parts No Description A02 1979 08 Case Front A02 0980 08 Case Rear E11 0453 08 Phone jack E30 3239 08 Curl cord 07 1414 08 29 5077 08 Lever PTT 570 0444 08 Tact s
13. TX modulation D302 303 305 Rf BPF turnig 23 TK 260G 270G PARTS LIST L Scandinavia K USA P Canada Y PX Far East Hawaii T England Europe Y AAFES Europe X Australia Other Areas New Parts indicates safety critical components Parts without Parts No are not supplied Les articles non mentionnes dans le Parts No ne sont pas fournis Teile ohne Parts No werden nicht geliefert TK 260G 270G Address N Parts No Description Destination Address N Parts No Description Destination 1A 1C K29 5333 13 BUTTON KNOB MONI LAMP TK 260G 270G 1A 1C K29 5334 13 BUTTON A02 2385 23 CABINET ASSY 141C K29 5337 03 LEVER RELEASE A02 2391 23 CABINET ASSY 1B K29 5341 03 KNOB CHANNEL SELCTOR 82 0096 02 REAR PANEL 3830 N09 2319 05 BINDING HEAD SCREW B09 0351 03 SP MIC 2A2D N09 2331 05 SPECIAL SCREW 11 1220 03 NATION GUIDE 1810 N14 0582 14 CIRCULAR NUT 838 0820 05 18 10 N14 0583 04 CIRCULAR NUT B46 0470 00 CARD 1B 14 0588 04 CIRCULAR NUT B62 1113 00 UCTION MANUAL N30 2606 46 PAN HEAD MACHINE SCREW B62 1129 00 UCTION MANUA 2A N30 3004 46 PAN HEAD MACHINE SCREW 2C N39 2030 46 PAN HEAD MACHINE SCREW D32 0423 05 OPPER 2420 N67 2005 46 PAN HEAD SEMS SCREW W 78 2045 46 PAN HEAD TAPT
14. VOLTAGE DETECTOR INT ce 314 33k 6 rio o gt 178 0479 05 SC M T5 2 Zomm 813519 9 5 Jeska 5 d 07 137 9 58MHz 1 I Si ON 3 4V 4 1 32 I E Db x AF PENER AMP TAT368F m sari 5 ALL RD 4 0 10k 183 8143 C206 100 10 142 25 1588 A9 AIO AN 7 SS AT2408N10S12 5 ES 0 1u 180k O Rias m CHANNEL SWITCH 5 10 mwa g RI4T 47 POWER SWITCH Ei E 1 2 2 3 SHIFT ON C266 100k lu D SR 5158 8 3 AUDIO VOLUME 4 214 D6 2 gf FREQUENCY SHIFT OFF 0V va 22 R148 9 17 DS 2 AMP 5 x 5 8159 1 Dia 2 3 1c13 a oT R128 R129 AF PRE AMP zi SH BFB 585 oT ojo H 123 awe 4 30622M4102GP ols H 55146 8 ei metu C199 VERY clo dc 5 5 DE pss os oz 9 eg aO Deg pa tis STR ss s 5 aie Y 5 5 Age 5 GE ovas o Ba H m 5 ola 0 g go SP OUT 25 18 yss MICROPROCESSOR 1 NE Q31 IS Se 559 lt 8 5176 oggi TXFI SI zT a ES 4 E ascasis zT glo 2 ek
15. pee 508 de lt ala 1 2 4V ele efi Qiu _ 5 T SSES 5 8 N OV 9 7 Lio 0 5 o 5 dE 3 ollo our in V 618 5 5 Also C107 1 914 H EIS E o ol 44 sais SW E 1 of 9 20 In C CZE aga 7 iiia TET 259 Karel 14 114 1 rs R82 C114 xis rio 1 DAN235E C263 a i 1 EE 5 e eg L72 0968 05 ofa C104 1000 220 5 CH 0 T ai iioi DI olx rh 4 mi R90 C124 R86 cias ays EIN 018 20 21 27 it ap 17 D302 303 305 215 H 9 DC SW 5T SAVE 10 120 220 8 9 1 N DTC144EE BFOBBPUTUNING PROTECTION 804094 NE o NN SCH zt D RO L304 SHIFT o UMG3N gt UMG3N ola x RK 1 0V 1 4 gt L72 0969 05 C108 BUFFER AMP Q301 1 REGISTER Dr 920 TA31136FN 109 EES 25 1215 i OUTPUT seen be 4 SIS E 523 geg O iu XFL NB ov L305 76 L307 EXPANDER ots SYSTEM PS RX 0 7V 134 4446 05 C310 R305 EN REST CHECK via ost R102 2 Tk L m 1 222 18 171 0546 05 134 4621 05 NE T 1 019 2 RoT Pla C131 ae R94 C125 49 95M
16. Way olan 5 0V DTAL44EE ale 015 9502 2x 1 11 s odo 0 1u olx Get D14 CS MBS DTC114EE 9 mx 7 t o R82 114 ths 20 DAN235E c263 a wel a 1 ct 5 2 ers Di on L72 0968 05 ER C104 1000 R513 R514 R515 L501 ol olool olo H 1k 220 iN die 2 ore 10k 10k 10k 4 4 Dic FEES R90 SFO oT psa 143 5 ein 5 A 4 Si 124 886 123 3 a 8 ix BLS E a REN a Q18 20 21 27 ap ap 17 E D302 303 305 1 aos Tess 2 ol 2 5 DC SW 5T SAVE 10 120k 220 8 9 A 1 E DTC144EE EF BPF TUNING EE AMP REVERSE PROTECTION 2 81914 TeS See az 4152 REO R303 C308 1304 H LAMP ON 5 0V T 5V E D507 1 SHIFT UMG3N UMG3N a are L72 0969 05 C108 RF BUFFER Q301 H m CP503 REGISTER age ee Di OLS vim 100 1000p 82u aA VOLTAGE qg SE 2 TA31136FN 9 W oV 28K1215 E REFERENCE 1694 EXPANDER 414 MODEL OTS eio SYSTEM 508 ei mm O lu N S ov L305 L307 2 Ae moray E Q22 RX 0 DM Cr E 134 4621 05 134 4446 05 C310 _ R305 i 255 2 z 16 2SC4619 1 i o9 he Ql Lu 4501
17. sd Or o 5 SES 8 250 LODE e e Soe 6 gt t L 5 9 lt 9 E c soc NOS 5 qo o ot O lt E 5 E 5 8 u 99 g 5 T a 60 8 x 110 8 20 30 mm SPECIFICATIONS 7 2 1 2V x 6 1100 projections included Charger and charging time KSC 15 normal charger approximately 8 hours KSC 16 rapid charger approximately 2 hours 210g Charging current Weight Voltage Dimensions Breaker 80 5 C Charge pin side Discharge pin side Thermistor CIRCUIT DIAGRAM GO 58 Po D 15 01x4 ooed eo 400001 esn JH OV u09 uonoes Jv ui MO S A 12 GOW ZH 1 AAG seuiooeq Indu 04198 DY ZHINSO Z91 3H 105951 085 5085 822 422 YO D SUUAWOZL SUJJAUJ0ZE SUJJAUJG9Z SUJAUIG Z SULIAUJG OL ZHINSO 291 Hs ODA s ZHAL SV i XL E907 QVNIS ureigo
18. EEPDAT EEPROM data input output TOVCO QT DQT modulation output VCO AUX1 Option board port 1 Smar Trunk Req Ack input E Trunk TX Request input SFTSTB Shift register strobe output EN1 Encoder pulse input 1 DACS Chip select output Max dev Select L CH selector input TK 260G NC NC AUX4 Option board port 4 Smar Trunk Data output AUX2 Option board port 2 Smar Trunk Data input E Tunk Synchronizing input KOUT3 Key scan output 3 KOUT2 Key scan output 2 TXD Serial data PTT RXD PTT on L Serial data KOUT1 Key scan output 1 KOUTO Key scan output 0 RDY Not used ALE Not used HOLD Not used HLDA Not used BLCK Not used RDY READ signal BHE Not used WR WRITE signal LCDCS LCD chip enable output CNTDAT Common data output EEPROM LCD SHIFT REG 1bit D A MODEM CNTCLK Common clock output EEPROM LCD SHIFT REG 1bit D A MODEM Port Name Function CSO Chip select signal A19 Not used A18 A9 Flash memory address bus ACC 5V 8 Flash memory address bus VSS GND 7 0 Flash memory address bus KINO KIN4 Key scan input PLLUL PLL unlock detect input unulock L PLL
19. 1C501 LCT5823W D505 188373 IC2 MB15A02 1C5 6 BU4094BCFV 9 RN5VL45C 1 12 AT29CO20 90TI 1C15 19 TATSWO1FU ICI8 1 73872 Q1 3 4 28C5108 CY Q7 28J248 Q10 28K508NV K52 013 14 TAL44EE ais FP210 Q22 31 25 4619 Q30 2SK1588 Q36 2SK1824 12 17 25111 7 10 15 HSC277 09 11 25304 D21 3188373 D302 303 305 HVC350B DISPLAY UNIT 501 2581132 0 D506 0 2210 05 TX RX UNIT X57 587 K 20 NJM2904V IC S 81350HG KD 1C10 AT2408N10S12 5 30622M4102GP 1C16 TCTSWS1FU IC301 UPBI1509GV Q2 28CA4226 R24 23 Q11 2504617 8 915 24 25 DTC114EE 219 35 166 926 114 032 28A1362 GR Q301 28K1215 E 2 4 25 05 6 213 14 DAN235E 4 03 D22 158154 400 X54 32850 10 Q502 2504617 5 D508 516 B30 2171 05 104 TA31136FN IC8 PST9140NR TAT368F 1014 TC35453F X9C103SI as 28C4988 Q9 17 33 34 DTC144EE Q12 28C4649 N Q16 28 114 920 21 UMG3N 035 UPA672T D3 HVU131 62 D18 B30 2019 05 WE POWER MODULE RBTOGF 40 nn nn ee CF CE oma a 4 oem SE GE lt gt SUNN gt mer TE EH CD gt Se d TX 0 77V Q6 H C4
20. 4F 6G 3M 5K 6E 4E 8M TA73W01FU TC75W51FU TA31136FN 5G K L M 0 5 SCHEMATIC DIAGRAM 2606
21. E 15 z Zine crea 522220244040 gt 8164 o 3 8 8145 470k 145 ALB ni C193 30 eui ADT F ik o lt E C205 34v 180k z 200 0 22 CN5 id SB ajA E Ly CMP IN ose DTC144EE 11 AO 5 7 ES 2 A HUI AUDIO PROCESSOR ALCO pe ayy Ei 9 e 1006 3 44 2 0 2V 12 46 Al 5 2 el S 0 207 0 tu 935 D 032 34 to H 2 1 amp C209 UPA672T m OFF 5 1V gt A2 um EXPGS MICGS 2 sw sP 1 AUX2 Pam 13 n 28k 51581 029 MIC 14 S 59 EXPIN AUX6 5 ale 0 m ES DC SW Lj AUX1 E r 16 17 my T o 6 SEN 8 We S 100k AUXS C247 0 O12u 8280 CRI pase Ee KE B AUXA Tus AT29C020 90TI 2 10k R219_ R220 R221 0 1 al Ji TXAFO 8 FLASH MEMORY E T R226 u qla T 0 056v GEN 8185 3 Sog erue JO eso o Dr 036 5156 eie Ce ON 4 9V 1k RXAFI 19 i e Tals E dk 473 Zo 1088 997 OFF 0V R200 100 R201 LAMP 2 6V m jef 100 5 6 2 o C226 56009 RB7OGF 40 ALTT
22. 5R FM IF SYSTEM W N Wide L Narrow C263 SH C265 3 Fig 3 Wide Narrow changeover circuit 17 TK 260G 270G CIRCUIT DESCRIPTION 5 Audio amplifier circuit The demodulated signal from 4 is amplified by 16 2 2 high pass filtered low pass filtered high pass filtered band eliminate filtered and de emphasized by IC 14 The signal then goes through an AF amplifier IC15 2 2 an AF volume control VR2 and is routed to an audio power amplifier IC11 where it is amplified and output to the speaker 6 Squelch Part of the AF signal from the IC enters the FM 4 again and the noise component is amplified and rectified by a filter and an amplifier to produce a DC voltage corresponding to the noise level The DC signal from the FM IC goes to the analog port of the microprocessor IC13 IC13 determines whether to output sounds from the speaker by checking whether the input voltage is higher or lower than the preset value To output sounds from the speaker IC6 sends a high signal to the SP MUTE line and turns IC11 on through Q32 Q33 Q34 and Q30 See Fig 4 7 Receive signaling 1 QT DQT Low speed data 300Hz and higher audio frequencies of the output signal from IF IC are cut by a low pass filter IC19 The resulting signal enters the microprocessor IC13 IC13 determines whether the QT or DQT matches the preset value and controls the SP MUTE and the speaker outp
23. 1 142 RAT m E R94 C125 49 95MHz our C126 R87 1306 22 oa G ss R 5 2 1 2 T nas 2 s Ee 6 _ ml GIG 2 9502 Lu 680 0 Olu Olu Then 2 H TX 5 o o m 18 Ka lo 6G 2504617 5 11 1 oix Q28 d 47k gt 100k 026 9 o H 3 oo o A A 114 915 R105 Ben 14 022 9 H A ala 516 BIS oT o 15 LAO 1 rk DC SW 5M DC SWITCH 223 BEEN Sr GE K GE S 100 R116 15k W N AUDIO CG als 8 3 9 0 pu XX x T 2V AMPLITUDE OS METER 80 Az t ME 915 tim e 21 ADJUST ela Ei 2 i 1 a Na SAVE ON 0V 5 m K IS E aa 3 4 1 D508 516 30 2171 05 2 OFF 5 a C153 VOLTAGE C147 aTe 5 9 H LAMP 4 AN LAMP 4 9V Ll T 5 1V 1000 BEOE 0 lu x 1e CN501 ay 29 Ree R100 575 Q26 _SW SQUELCH OFF 0V OFF 0V ie 5 E aa D21 on a o 47k our IN 155373 ote 508 510 512 516 i R249 0 5 R G SS 1 m d H LED KEY PAD BACK LIG
24. Default Group Down KEY1 24 Group Up 25 Scrambler KEY1 26 when scrambler is set e TK 270G No Function KEY2 OFF only Talk 2 3 Display Character 2 5 Home Channel KEY2 7 Channel Down 2 8 Channel KEY2 9 Keylock KEY2 10 Lamp KEY2 11 Selectable 2 15 destination only Monitor A KEY2 17 Monitor B KEY2 18 Monitor KEY2 19 Monitor KEY2 20 RF Power Low KEY2 21 Scan 2 22 Scan DEL ADD 2 23 Group Down KEY2 24 jFunction Choices Display Remarks Function Key No Function LAMP OFF Talk Around LAMP 3 TK 260G cannot be selected Display Character LAMP 5 TK 260G cannot be selected Home Channel LAMP 7 TK 260G cannot be selected Channel Down LAMP 8 TK 260G cannot be selected Channel Up LAMP 9 TK 260G cannot be selected Keylock 10 2606 cannot be selected Lamp 11 Default TK 270G TK 260G cannot be selected Selectable LAMP 15 TK 260G cannot be selected M destination only Monitor A LAMP 17 Monitor 18 Monitor C LAMP 19 Monitor LAMP 20 RF Power Low LAMP 21 Scan LAMP 22 TK 260G cannot be selected Scan DEL ADD LAMP 23 TK 260G cannot be selected Group LAMP 24 TK 260G cannot be selected Group Up 25 TK 260G cannot be selected Scramb
25. TK260G 270G KENWOOD SERVICE MANUAL 1999 9 PRINTED IN JAPAN B51 8493 00 S 1425 Knob PTT s e Antenna i T90 0679 05 M Knob CHANNEL SELECTOR Knob ENC K29 5341 03 K29 5331 03 Knob VOL Knob VOL K29 5332 03 K29 5332 03 Cabinet assy A02 2391 23 Cabinet assy A02 2385 23 Knob PTT 5 K29 5334 13 K29 5334 13 Knob MONI 34s Knob MONI K29 5333 13 K29 5333 13 gt pt Key top DTMF 29 5330 02 H L TK 260G TK 270G M market models are shown GENERAL meet 2 PACKING ce but 32 SYSTEM SET UP 2 ADJUSTMENT ctt Rt rit n pta 33 OPERATING FEATURES esee 3 PC BOARD VIEWS REALIGNMENT 8 DISPLAY UNIT 54 3250 10 41 DISASSEMBLY FOR REPAIR 16 TX RX UNIT 57 587 43 CIRCUIT 17 SCHEMATIC 49 SEMICONDUCTOR DATA 21 BLOCK DIAGRAM 57 DESCRIPTION OF 23 LEVEL EE 59 PARTS titi teet tees 24 KNB 14 KNB 15A Ni Cd BATTERY 60 EXPLODED 30 OPTIONS castae tu tnt 61 SPECIFICATIONS BACK COVER TK 260G 270G GENERAL SYSTEM SET UP INTRODUCTION SCOPE OF THIS MAN
26. Australia Centre Homebush N S W 2140 Australia KENWOOD ELECTRONICS HONG KONG LTD Unit 3712 3724 Level 37 Tower one Metroplaza 223 Hing Fong Road Kwai Fong N T Hong Kong KENWOOD ELECTRONICS TECHNOLOGIES S PTE LTD Sales Marketing Division 1 Ang Mo Kio Street 63 Singapore 569110
27. Component side Pattern 1 Pattern 2 Pattern 3 Pattern 4 Foil side DTA114EE 114 DTA144EE DTC114EE DTC144EE 2SA1362 GR 2SC4226 R24 25 4617 5 25 4619 25 5108 2SC4649 N P 30622M4102GP FP210 UMC4 LA 25 4988 E 255 El 7 18172 m R17 2SK508NV K52 5 35 228 2 3 1 4 14 Gest N 257 C258 eja 219 5 Erg oc 10 SE H Ke Hu bel e oye 5 ss x 0100 25 1588 5 572 48 8 NI aleet cu rz eng E3 E I E Bn ic 26 5 R259 12 8122 59 65 L40 4 5 5 BOS UPA672T S 81350HG KD MB15A02 G 9 1035 259243 25 1824 23 22 PST9140NR TA7368F RN5VL45C TX RX UNIT 57 5870 Component Side Foil Side View Address Address 8E 5C 7L 5B 6F 8K 4J 80 40 80 4P 4 8P 8N 5P 5D 6P 5D 4N 5E 5D 3L 50 6M 70 50 4L 7K 6M 7J 7K 70 3 7J 6J 6H 8J 6J 8H 5D 8K 7E yi 7J 7 6H 7H 8K 7G 6J 6 4K 6J 4K 6F 8 7 6 7 5
28. 21 TK 270G M TX RX UNIT X57 5870 XX 10 TK 260G K M 1 2606 TK 260G K M 2706 TK 270G K M B30 2019 05 CK73GB1H471K CC73G6CH1H070B CC73GCH1H100C CK73GB CC73GCH1H030B CK73GB CC73GCH CK73GB 7 7 7 7 7 7 7 7 7 7 7 92 05 CK73G CC73GCH CK73GB CK73GB CC73GCH1H101J CK73GB1H471K 92 0001 05 92 0514 05 CC736CH1H390J CK73GB1H102K CK73FB1C474K CK73GB1H102K CK73FB1C474K CK73GB1H103K CK73GB1H103K CC736CH1H221J CC73G6CH1H050B CC73G6CH1H010B 92 0565 05 CK73GB1H103K CC73GCH CC73GCH CK73GB1H CK73FB1E CK73GB1H CC73GCH CC73GCH LED RED GRN 470 7 0 10PF 0 10UF 3 0PF CO CH CH CO CH 1000PF 18PF 1000PF 1 0PF 15PF ES 6 0PF 33PF 100PF 22PF 16PF C3 TK 260G M TK 270G M TK 260G K TK 270G K C88 C89 C90 C94 C98 C99 C100 C101 C104 C107 108 C109 C110 C111 0112 C113 0114 0115 0118 0119 120 121 122 0123 0124 C125 126 C128 C129 C130 C131 C132 C133 C135 C136 C137 C138 C139 C140 C141 142 143 144 146 147 C148 150 153 C155 156 157 C158 C159 C161 C162 C163 164 C165 C166 CK73GB1H102K CK73GB1H102K CC73GCH1H100D CC73GCH1H1R5B
29. 4 18 Dropout 0 300 1s DODT 3 Default 3s Monitor C 4 19 Delay Time Monitor D 4 20 Dwell Time 0 300 1s DWL__ 3 Default 3s RF Power Low KEY4 21 Default Scan KEY4 22 Digit Time 50 200 10ms DIGT 50 Default 50ms Scan DELIADD 4 23 Inter Digit Time 50 1000 50 50 Default 50ms Group Down 4 24 First Digit Time 50 200 10 5 50 Default 50ms Group 4 25 50 1000 50ms RIST_100 Default 100ms Scrambler KEY4 26 when scrambler is set Rise Time with QT 50 1000 50 RTWQ_ 100 Default 100ms Channel Up Down CH_UP DN Default DIALID Enable DID Group Up Down UP DN Diable DID DIS lt Default No Function OFF No of 12 NODK_12 Default Key 16Key NODK 16 Hold Time ON DHT Default OFF DHT OFF Store and Send ON SAS ENA OFF DAG CSQ Default 14 TK 260G 270G REALIGNMENT Function Choices Display Remarks When the O switch is pressed while SELF is displayed D Key D Code DKA D Default the memory is reset Assignment 1 16 1s 16 When the memory is reset mode data and model data are DTMF Code GO DTMF OFF Default not reset Signaling SEL CALL DTMF SEL The TK 260G cannot reset the memory Inter Mediaat
30. 5 7V PTT ON ANT BATT terminal Encoder knob After pressing the PTT switch confirm that one predeter mined numeric in the range of 1 to 256 appears then press the lt a key That number will be stored in memory BATT terminal voltage 5 9V Check No blinking of LED Blinking of LED Condition TK 260G 270G ADJUSTMENT Measurement Adjustment Specifications Test equipment Terminal Parts Method Remark Sensitivity Adjustment Adj item SENS Adjust fL fc DVM fH S E N S gt S E N S S E N S Encoder knob f S E N S 88 fc S E N S 134 fu S E N S 180 PANEL TEST MODE CH Sig 2 1 Tra G setting 40dBm Tracking generator spectrum analyzer L305 L306 L307 Adjust wave form to figure 1 1 CH Sig 1 1 Check wave form to figure 2 fc CH Sig 3 1 Check wave form to figure 1 fu ATT 0 dB f fu view view 4 0 M ns CENTER 162 4 MHz Fig 1 SPAN 100 0 MHz REF 40 0 d n 5dB MARKER 162 0 BPF WAVE B blank kim L 45 687 Les SPAN 100 0 MHz Sensitivity Check Panel Test Mode 1 CH Sig 1 1 SSG OUT Wide 117dBm 0 MOD 1kHz 2 Narrow 117dBm 0
31. CONNECTOR H25 0085 04 PROTECTION BAG 100 200 0 07 H25 2012 04 ROTECTION BAG 75 100 0 08 L501 502 L92 0138 05 FERRITE CHIP H52 1413 02 EM CARTON CASE H52 1417 02 EM CARTON CASE CP501 R90 0748 05 KCOMP 47K X4 CP502 503 R90 0724 05 KCOMP 1K X4 19 1572 0 OLDER BATT RELEASE 19 5352 0 OLDER VOL ENC G R501 510 RK73GB1J 4 3 OK 19 5353 14 OLDER BATT TERMINAL R511 R92 1252 3 4 0 DK OK 41K 19 5355 0 OLDER VOL CHANNEL SW G R512 RK73GB1J 21 4493 0 P MIC HOLDER R513 515 RK73GB1J R516 RK73GB CO CO CO E 21 8377 03 LCD HOLDE 21 8378 04 SPEAKER FIXTURE R517 RK73GB 21 8381 14 SPEAKER FIXTURE R518 RK73GB 29 0624 03 R519 522 RK73GB 32 0925 04 055 R523 RK73GB R524 RK73GB OK 470 41K 470 K29 5330 02 KEY TOP DTMF K29 5331 03 KNOB ENCODER D501 504 25111 K29 5332 03 KNOB VOLUME D505 155373 2606 TK 260G TK 260G M TK 270G M 2706 TK 270G K M K TK 260G K TK 270G K New Address parts Parts No Description PARTS LIST Destination Address TK 260G 270G New parts Parts No TX RX UNIT X57 5870 10 Description Destination 25111 LC75823W 25 1132 0 28 4617 5 DIODE IC MOS IC TRANSISTOR TRANSISTOR 1 TK 270G K
32. LPF 3kHz HPF OFF 2 Adj item FQT 7 F Q T Adjust Narrow PTT ON 3 Adj item FQT Adjust PTT ON ANT SP MIC connector Encoder knob Make the demodulation waves into square waves Wide 0 90kHz Narrow 0 42kHz 37 TK 260G 270G Item Condition ADJUSTMENT Measurement Adjustment Test equipment Terminal Parts Method Specifications Remark 14 DQT Devition Adjust Wide 1 Adj item FDQT Adjust LPF 3kHz HPF OFF 2 Adj item F D QT 2 F D Q T 2 Adjust PTT ON Power meter Dev meter Oscilloscope F D Q T Narrow 3 Adj item FDQT Adjust PTT ON 15 DTMF Deviation Adjust Wide 1 Adj item DTMF Adjust LPF 15kHz HPF OFF PTT ON Narrow 2 Adj item DTMF Adjust PTT ON 16 TONE Deviation Adjust Wide 1 Adj item TONE Adjust LPF 15kHz HPF OFF PTT ON Narrow 2 Adj item TONE Adjust PTT ON ANT SP MIC connector Encoder knob Wide 0 75kHz Narrow 0 4kHz Wide 2 5kHz Narrow 1 25kHz 0 1kHz Wide 3 0kHz Narrow 1 5kHz 0 1kHz 17 BATT Detection Writing 1 Adj item BATT Adjust PTT ON Power meter DVM 18 BATT Detection Check 38 Panel Test Mode 1 CH Sig 1 1 BATT terminal voltage 6 5V PTT ON 2 BATT terminal voltage
33. Q32 P 5 CH D3 EE 2 41086 urs ole tk a 220k 8 5 Z MSKST N Deg odo o S 7 254136 45V 929 1 1 5 Se 220 Olxx E 3 0 av 1 036 SP OUT 4 818 VES MICROPROCESSOR C180 77 1840 05 mv jet 8 8196 PWROP 5 8 m7 21 si 1 A16 8 9 8304MHz Bscasie 059579 CIS ays 215 lt 1 1 15 2 ZING gegen mm C202 O lu o 4 R145 470k 1 2 H Loy 15 Di 0 193 30 lt TA75WO1FUP C203 lU TRL S5Y a 7 hi D s PWRGS 35453 1 PR seeds 200 22u 1 i A12 Do A g E E Ej oly e cm 1 ENS EE 1 5 5 E 1 n gt 0 01 mee a DTC144EE H AUXS Al 40 7 iet 3 EXPO AUDIO PROCESSOR RX 30 214 9 1006 3 PTT ON O 2V 12 AS Al ol 8 m 9 ECHD 207 O Lu 935 2 4 H EAE a ats UPA672T AF OUT 3 OFF 5 1V AS A2 lk Nilo 209 3300 1 AUX2 PER qun 13 R225 15k 515 EXPGS o rn DC SW SP MUTE 4 14 Nee Sig EXPIN S NF MUTE AUX6 als ala da 9 m 12 sw AUXL 5 EIS 259 16 17 2 21 4 4 2 100k 9 AUXS i C247 0 12
34. S C216 C217 C218 R258 57 587 m AU AT29C020 90TI 251 2 823 R219 8220 R221 y zi Seii VES m SASH MEMORY 2 R226 R181 D 3300p E 6 Ara p 27k 2180 180k A 4 Tk 42 P MIC e 3 E e IN OUT 9221 20 1 M S SR E cz ays 226 5600 55 8200 100 ALTTONE 9 S 915 is 1 4 5 d d 94 si E zz 5 D eu x ms 5600 9 zy EE 8205 R206 R207 6 X57 587 2 I IY o IC19 2 So Busco VOLTAGE CLAMP m TX AF ADJUSTMENT eu dee 9 4 ACTIVE FILTER m ofo 230 5600p 8202 N S fro AFS O SP MUTE 1 470 100 71 E m FOR LSDin gt R183 i H vje 8240 231 H i i S 1018 R gt 4 olas 470k MUTE O ER S401 ia oi rl elz i LCT3872M T Sees S255 SR 22k 100 22k 1 E 538 ola 150p 210 C236 R237 R211 2 cid 2 DTMF DECODER 1216 5 ole PTT D E TC75W51FU Riad 2235 1 L ola y 8209 470k o 10k N 2 5402 men 875 Se E 220k C243 og E qlo MICI ep LAMP R182 8176 R241 al R242 R
35. Sig 1 1 0 5 1 5W Set low power Push 41 1 2A or less PTT ON 2 CH Sig 2 1 PTT ON 3 CH Sig 3 1 PTT ON Item Condition Condition ADJUSTMENT Measurement TK 260G 270G Adjustment Test equipment Terminal Parts Method Specifications Remark 1 Adj item MAX Adjust AG 1kHz 150mV Dev meter filter LPF 15kHz HPF OFF 2 Adj item Power meter Dev meter Oscilloscope AG AF M AX gt M A X gt M A X Adjust PTT ON Narrow 1 Adj item MAX Adjust PTT ON MIC Sensitivity Check Panel Test Mode 1 CH Sig 1 1 AG 1kHz 15mV LPF 15kHz PTT ON ANT SP MIC connector Encoder knob 4 2kHz According to the larger 2 1kHz According to the larger 50 2 DQT VCO Balance Adjust Wide 1 Adj item VDQT Adjust LPF 3kHz HPF OFF 2 Adj item V D Q T gt V D Q T gt Adjust PTT ON Power meter Dev meter Oscilloscope AG AF VTVM V D Q T Narrow 3 Adj item VDQT Adjust PTT ON 10 QT TCXO Balance Adj item X Q T Adjust 200 Wide Narrow 11 DQT TCXO Balance Adj item X D Q T 5 Adjust 150 Wide Narrow 12 QT VCO Balance Adj item V Q T Adjust 200 VDQT x 450 VQT 3 QT Deviation Adjust Wide 1 Adj item FQT Adjust
36. Signaling matches Option Signaling can automatically Reset after a specified time Dead Beat Disable When the D B D Dead Beat Disable code matches a preset operation is performed When D B D matches on all group channels regardless of whether Option Signaling Yes No then TX Inhibit or TX RX Inhibit is activated by the settings performed afterwards D B D is canceled when the D B D code is received Transpond is always activated when the D B D code matches Alert is not output An Option Signaling match is not displayed TK 260G 270G OPERATING FEATURES REALIGNMENT 7 Audible user feedback tones The transceiver outputs various combinations of tones to notify the user of the transceiver operating state The main tones are listed below The high tone is 1477Hz the mid tone is 941Hz and the low tone is 770 2 Power on tone This tone is output when the transceiver is turned on The high tone is output for 500ms e Alert tone This tone is output when the transceiver is in TX inhibition for TOT battery warning and PLL unlocked It is output until the PTT button is released The 697Hz tone is output Busy Tone This informs the user of a busy channel lock out Group Call Tone The group call tone informs the user of a group call in 2 Tone Option Signaling This tone repeats 7 times 770Hz 770Hz 30ms 30ms 30ms Individual Tone Individual tone is issued on receiving selective call
37. by DTMF 2 Tone Option Signaling 2000Hz 2000Hz 2000Hz 100ms 100ms 100ms 100ms 100ms Pre Alert tone Informs the user when nearing transmit inhibit transmit cutoff time due to TOT The Pre Alert Tone is issued from the time set for TOT Pre Alert until the TOT triggers 1633Hz 1633Hz 1633Hz 50ms 50ms 50ms 50ms 50ms REALIGNMENT 1 Modes Panel test mode TK 270G only Firmware programming mode Clone mode Self programming mode TK 270G only Panel tuning mode Data programming mode PC test mode PC tuning mode Mode Function For normal use User mode Panel test mode Used by the dealer to check the fundamental characteristics Panel tuning mode Used by the dealer to tune the radio PC mode Used for communication between the radio and PC IBM compatible Data programming Used to read and write frequency data mode and other features to and from the radio PC test mode Used to check the radio using the PC This feature is included in the FPU See panel tuning Firmware Used when changing the main ming mode program of the flash memory Clone mode Used to transfer programming data from one radio to another Self programming mode Frequency signalling and features 2 How to Enter Each Mode Mode Operation User mode Power ON Panel test mode lt 4 Power ON Two seconds TK 270G only PC mode Receiv
38. c5 e R257 Jl IC IN E HEY VCO OSCILLATION TX 5 RX 0 45V RF AMP TX DRIVER LTE aNTSSWITCH at mio 18 H R1 470p 2SC5108 Y x ei Q2 TX 0 75V 4 i Gi d CALL SCN LO A S 57 ass L3 25 05 0 14 33n 6 2554226 m UM 1C301 55 c11 R5 C12 R6 ona UNLOCK z 3 1000 6 UPB1509GV 1 Dx 1c2 12 olg w 9 tala el ac 10 HSC277 18 QUEE H 5 DETECT OTS 86 mu gt 25051 ols as H MB15A02 2 0598 leet oe H WV AWE WA R92 a 5 vex 1029 zen Stc ojo Zen EE c28 TKA RA 8504955 9 Ll Gl OVERLOAD Na 229 e sie t di 4 H TO pi p y pi p p 10 LED RED GREEN CLOCK FIN 58 R244 R22 R23 R142 118 Ww 5 olo Lag 029 0 52 1000p 1 4 Ec P a E 96 ammo amm V o V o V Ee D18 NC 45 os nam eg oes OTOL C64 Lp 8 mix H B30 2019 05 DATA ea 9o e o 9 5 JS 29 0 3 5 oF gt Sat d Fm D2 4 9 11 ols SW TX 0V 9
39. display shows OFF and the operator can select one of the OST tone pair using the tuning control The display shows and tone pair No is selected Press OST key again the transceiver exits from OST mode and returns to the group channel mode 16 tone pairs for OST can be programmed by KPG 56D OST is useful to access the repeater with same radio frequency and different tone QT DQT TK 260G 270G OPERATING FEATURES 9 Reverse REV Note C type only When the REV switch is pressed transmission can be performed with the receive frequency and receive signaling and reception can be performed with the transmit frequency and transmit signaling When REV is on HORN ALERT and PUBLIC ADDRESS do not work 10 Selectable QT SEL QT TK 270G M types only When the SEL QT switch is pressed QT frequency can be temporarily changed with the CH switch 11 2 Tone Encode Select TK 270G only Press the key programmed as 2 tone Encode Select A pre programmed 2 tone code name appears on the display Press the key programmed as Channel Up and Channel Down to select you desired 2 tone code name 3 Press PTT switch and 2 Tone Encode Select key to transmit and release them to receive Note The code for the TK 260G is not selectable You cannot change the tone in step by using the Channel Up and Channel Down keys 12 Redial TK 270G only Pressing this key when Group Channel is shown displays the previo
40. mode setting Remove D17 from the TX RX unit Figure 3 K models only Hold down the LAMP switches and turn the power switch on When the self programming mode is entered SELF appears on the display The mode changes automatically to Model Select Mode and PORTABLE is displayed in about one second 017 This mode self programming mode cannot be set when it Fig 3 has been disabled with the FPU e Flow Chart Sexe Je 44 CH VHF ace VHF 128CH e UHF UHF 128CH Lal CH VHF F1 VHF F2 UHF F1 UHF F3 UHF F4 VHF F1 F2 UHF Ja F4 Cannot be Cannot be 4 set when t SSC ae MON Channel set mode LAMP Function set mode Function Choices Display Remarks Select 1 128 1 1 gt Group selection Channel selection change IF the radio type of TK 270G was temporally set to Mobile Select 1 128 for the cloning purposes is displayed at User Group Mode when the TK 270G is turned on RX frequency 575 ISTP 250 Display when an item is selected In this case please set the radio type back to Portable at STP_1000 or when a step is changed Model Select Mode menu about 0 5 seconds Step change 8 2 Channel Setting Mode VHF 2 5 5 0 6 25 7 5kHz 1MHz Step a 5 Blank LAMP Freq On Blank s
41. voltage obtained form D1 R1 and C6 causes the voltage applied to the microprocessor to go low When the microprocessor detects this condition the transmitter is disabled ignoring the push to talk switch input signal See Fig 6 5C 2 R1 IC13 D LD AW d UL PLL IC CPU Fig 6 Unlock detector circuit 4 Transmitter System 1 Microphone amplifier The signal from the microphone passes through the limitter circuit in D23 and through the high pass filter the ALC circuit the low pass filter the high pass filter and pre emphasis IDC circuit IC14 When encoding DTMF the mute switch Q35 is turned OFF for muting the microphone input signal The signal passes through the D A converter IC17 for the maximum deviation adjustment and goes to the VCXO modulation input MUTE DTMF 2 TONE Fig 7 Microphone amplifier 2 Drive and Final amplifier The signal from the T R switch D5 is on is amplified by the drive amplifier to 50mW The output of the drive amplifier is amplified by the RF power amplifier IC1 to 5 0W 1W when the power is low The RF power amplifier consists of two MOS FET stages The output of the RF power amplifier is then passed through the harmonic filter LPF and antenna switch D3 is on and applied to the antenna terminal ANT 2 06 D3 rom DRIVE RF ANT t Een am VDD 1 2 2 2 13 Fi
42. 09 2319 05 B M2x3 5 09 2331 05 C NUT N14 0582 14 D NUT N14 0583 04 E NUT N14 0588 04 B gt M2 6x6 N30 2606 46 027 M3x4 30 3004 46 J 02 4 5 78 2045 46 2x3 79 2030 46 703 2x5 83 2005 46 7 30 Parts with the exploded numbers larger than 700 are not supplied TK 260G 270G EXPLODED VIEW TK 270G J32 0925 04 RS d TX RX unit 2 6 4 09 2319 05 2 3 5 09 2331 05 N14 0582 14 D NUT N14 0583 04 F M2 6x6 N30 2606 46 M2x3 N39 2030 46 M2x5 N67 2005 46 J 2 4 5 78 2045 46 02 3 79 2030 46 L 02 5 83 2005 46 Parts with the exploded numbers larger than 700 are not supplied 31 TK 260G 270G PACKING 32 PACKING FIXTURE H12 1487 02 45 BELT HOOK J29 0624 03 34 PROTECTION BAG H25 2012 04 b 2 4 CAP SP MIC B09 0351 03 41 SP MIC HOLDER J21 4493 04 M SCREW SET N99 2012 05 32 PACKING FIXTURE H12 1487 02 ANT HELICAL ANTENNA T90 0679 05 M 33 PROTECTION BAG H25 0085 04 7 WARRANTY CARD B46 0470 00 K B62 1113 00 270G 9 INSTRUCTION MANUAL 8 INSTRUCTION MANUAL B62 1129 00 260G 35 ITEM CARTON CASE H52 1413 02 270G 36 ITEM CARTON CASE H52 1417 02 260G D d UPC CODE LABEL 32 Test Equipment Requir
43. 1 2 the bias is applied connect to VDD2 Apply 1 3 the LCD drive bias voltage from outside If 1 2 the bias is applied connect to VDD1 Division signal output pin Emitter follower output 0 1 Vpf or more can be output under 200 ohmload Connect a coupling capacitor to this pin for cutting with an external circuit for example 1000 pF Power supply voltage pin for the output buffer circuit Connect bypass capacitor to this pin to reduce the high frequency impedance with the ground for example 1000 pF TK 260G 270G SEMICONDUCTOR DATA Microprocesser 30622M4102GP TX RX UNIT IC13 B Pin function Port Name Function TX Automatic Power Control data output RX BPF tuning data DTMF DTMF 2TONE BEEP output 2TN 2TONE decode pulse input DTMSTD DTMF decode detect detect H SIM Destnation selct BYTE 5V 5M CNVSS GND AFSTB Base Band IC strobe rest output AFFCLK Base Band IC frame rest system reset output RESET Reset XOUT 0 0 Clock output VSS GND XIN Clock input VCC 5V NC NC EN2 Encoder pulse input 2 Option board port 3 Smar Trunk Clock output E Trunk Step pulse input INT Battery voltage monitor input Low battery L OE Not used TOTCXO QT DQT modulation output TCXO
44. 1 75V RF AMP 1 1 988 eee IM 5 28C4226 R24 RX 0 TOV gl 12301 1 76V De Cli R5 R6 E 1 i ps ES oi ida UNLOCK _ 3 89 21000 scht ol m UPB1509GV 10 18 1 18p 0 MB15A02 E Lo 4 89 25051 off as 9 be H SE 2 las 9510 c27 28C5108 Y C303 R301 g SS 25 4988 m Gl OVERLOAD a Lio 555 xU 4 4 SWITCH H 10 LED RED GREEN CLOCK FIN 3 Sg R244 R22 R23 R142 L18 Se 9 EIER 1000p 3 EROT ECKLON D pis 45 560 4 7 of 1 2 1 D du 8 ols H B30 2019 05 1 LD ole Sec ol eom 050 oF gt AN o 4 9 11 ole 529 52 H DC SW LED RED DC SW LED GREEN BUSSY 4 9V a a a ba Ue D TX 4 ada ala 18 5 En FREQUENCY CONTROL OTS 1 2 DIVIDER 216 H 024 925 cpi 478 YEO 349 124 w s DTC114EE DTC114EE 132 156 10 74578 OTS Reb 12519 560n 86 100 120 539 MODULATION OSCILLATION RX R37 vy 2 n ol mV P dg SWITCH ULO 10u ATP 5 5 122 100 92 Qil n 85 R252 8253 SES 5 mec 210 ale 2
45. 260 4 2 1 16 68k 1 gen ME a m LAMP MONI SEIS Jk 330k 220k 220k o S BIAS AF BUFFER AMP o 5 0 5 lu 3 H 4 4 o o oF 925 5 5403 lt SIo STs 3 i 455 H H 2 gt i ege TK 270G Note Component marked with a dot are Parts of pattern 1 57 587 STC SB 14 RESET INT Ice Ic 927 E 58 or 21002 2 Q20 UMG3N 25A1362 GR TAT368F El 25 1588 934 144 144 DTA114YE TK 260G 270G 2606 2706 BLOCK DIAGRAM 1 Di 25111 25 5108 TX 300 348MHz 1 RX 399 9 447 9MHz uhr 1 301 Q4 DS HSc2T7T Q6 D3 HVU131 UPB1509GV 25 5108 010 5 277 25 4988 PFO314 03 5 277 DRIVE RP POWER AMP ao MODULE DTCL44EE Q2 2SC4226 R24 D2 D4 MA2SVO5 06 2505108 7 1 TX RX PAGE 150 174 FRQ ADJ 5 i e Ke 5T 5T sc CURR 1 16 ais gt H DTA144EE NS m 910 2SK508NV K52 LT7 1794 05 LPF D9 011 25304 199 95 223 9 ais 5T sw 114 ANLG 5 926 114
46. 3GB C192 193 CC73GCH1H300J F C262 CK73GB C194 C92 0507 05 C263 CK73GB OM C0 C196 CC73GCH1H101J C265 266 CK73GB C198 199 CK73GB1H103K C268 CK73GB C200 CK73GB C269 CK73GB C201 CK73GB1H103K C270 CK73GB C202 203 CK73GB1C104K C271 CK73GB C204 CK73FB1C474K C301 CK73GB C205 CK73GB1H103K C303 CK73GB C206 208 CK73GB1C104K C305 CK73GB C209 CK73GB1H332K C307 CC73GCH C210 CK73GB1H102K CK73GB C211 C92 0507 CC73GCH C212 CK73GB F CC73GCH C213 CK73GB CC73GCH C215 CK73GB1C104K CC73GCH C216 CK73GB1H332K F CK73GB1 CO CH CO CH 39PF 0 10UF 0 10UF 9 0PF 1000PF C217 CK73GB1E153K CC73GCH C218 CK73FB1H563K CK73GB1 C219 220 CK73GB1C104K CK73GB1 C221 CK73GB1H471K F CC73GCH1HO90D C222 CK73GB1H103K CK73GB1H102K CO CO CO CO CH o C223 C92 0560 05 F C05 0384 05 CERAMIC TRIMMER CAP 10P C224 CK73GB1H122K C225 CC73GCH1H101J F E40 6012 05 FLAT CABLE CONNECTOR C226 227 CK73GB1H562K F E40 5662 05 PIN ASSY SOCKET C229 CK73FB1H102K F E40 5932 05 PIN ASSY SOCKET C230 CK73GB1H562K E11 0457 05 ONE JACK 25 35 C231 C92 0521 05 C232 CK73GB1H471K F F53 0130 05 FUSE C233 CC73GCH1H151J C234 235 CK73GB1H272K F L79 1474 05 NING COIL L72 0968 05 RAMIC FILTER C236 CK73GB1C104K 172 0969 05 RAMIC FILTER C238 CK73GB C239 CK73GB1C104
47. 5 Step Default OFF Lamp KEY3 11 14 TOT OFF1 15 TOTS OFF Cannot be set when TOT is OFF Selectable QT KEY3 15 destination only Reset Time 1s Step Default OFF MonitorA KEY3 17 Clear to Transpond YES CTT_YES Monitor KEY3 18 BCL for Transpond CTT NO e Default Monitor 19 16 Battery Save ON ON Default Monitor D 20 OFF BATT OFF RF Power Low 21 Default 17 Signaling SIG OR Default Scan 22 AND SIG AND Scan 23 18 Squelch Level 0 9 1 Step SQL 5 Default 5 24 Priority None PRI NONE Default Group Up 25 Fixed PRI Scrambler KEY3 26 when scrambler is set Selected SEL gt TK 270G No Function KEY4 OFF Lock Back 0 5 5 0 0 05 500 Default 500ms Cannot be only Talk Around 4 3 Time A set when Priority none Display Character 4 5 Lock Back 0 5 5 0 0 05 LBB 2000 Default 2000ms Cannot 4 7 Time B be set when Priority 2 none Group Down Home Channel Channel Down 4 8 Revert Selected SEL Channel Up 4 9 Channel Last Called REV LC Default Keylock 4 10 Last Used LU Lamp KEY4 11 Selected Talk Back REV_S T_ Selectable 4 15 destination only Priority REV_PRI_ Monitor A 4 17 Priority Talk Back REV_P T_ Monitor B
48. C 5R and 5T 5V is always output while the power is on 5M is always output but turns off when the power is turned off to prevent malfunction of the microprocessor 5C is a common 5V and is output when SAVE is not set to OFF 5R is 5V for reception and output during reception 5T is 5V for transmission and output during transmission 19 TK 260G 270G CIRCUIT DESCRIPTION 20 6 Control Circuit The control circuit consists of a microprocessor IC13 and its peripheral circuits It controls the TX RX unit and transfers data to and from the display unit 1213 mainly performs the following 1 Switching between transmission and reception by the PTT signal input 2 Reading system group frequency and program data from the memory circuit 3 Sending frequency program data to the PLL 4 Controlling squelch on off by the DC voltage from the squelch circuit 5 Controlling the audio mute circuit by the decode data input 6 Transmitting tone and encode data 1 Frequency shift circuit The microprocessor IC13 operates at a clock of 9 8304MHz This oscillator has a circuit that shifts the frequency by BEAT SHIFT SW Q31 2 Memory circuit Memory circuit consists of the CPU IC13 and a flash memory 12 A flash memory has a capacity of 2M bits that contains the transceiver control program for the CPU and data such as transceiver channels and operating features This program can be easily written from an external devic
49. CC73GCH1HO50B 92 0560 0 92 0560 0 CK73GB1H 92 0560 0 CK73GB1C 92 0507 0 CK73GB1H CK73GB1H CK73GB1C 92 0560 CK73GB1H CK73GB1H CC73GCH CK73GB1H CC73GCH CK73GB1C1 CK73GB1H1 CK73FB1A CK73GB1H CK73FB1A CC73GCH CC73GCH CK73GB CC73GCH CC73GCH CK73GB CC73GCH CK73GB CC73GCH CK73GB CC73GCH CK73GB CK73GB CC73GCH CK73GB CK73GB CK73FB1 CK73GB CK73GB CK73GB CK73GB1H 92 0662 CK73GB CK73FB1 CK73GB CK73GB CK73GB CK73GB CK73GB CK73FF1 CK73GB CK73GB P D B B 25 TK 260G 270G PARTS LIST TX RX UNIT X57 5870 XX New New Ref No Address parts Parts No Description Destination Ref No Address parts Parts No Description Destination C173 C92 0567 0 6 3WV C247 CK73GB1E123K 0 012UF C174 CK73GB1H102K K C248 CK73GB1H103K 0 010UF C176 CC73GCH1H101J J C249 CK73GB1H222K 2200PF C177 CK73GB1C473K 250 CK73GB1C683K 0 068U C178 92 0560 05 C251 CK73GB1C104K 0 10UF C179 CK73GB1C104K 252 CK73GB 047UF C180 CK73GB1H103K 253 254 CK73GB C181 CK73GB1C393K H C255 CK73GB C182 CK73GB1H102K C257 CK73GB C183 184 CK73GB1C104K C258 CK73GB C3 185 CC73GCH1H180J C259 CC73GCH C189 CK73GB1H103K 260 CK73GB C190 191 CK73GB1C104K C261 CK7
50. CO CO 92 1252 RK73GB1J RK73GB1J RK73GB1J RK73GB1J RK73GB RK73GB RK73GB RK73GB RK73GB RK73GB RK73GB RK73GB RK73GB RK73GB RK73GB RK73GB RK73GB RK73GB RK73GB RK73GB RK73GB RK73GB 260G TK 260G K M TK 260G M TK 270G M 270G TK 270G K M TK 260G K TK 270G K 27 TK 260G 270G PARTS LIST TX RX UNIT X57 5870 XX New New Address parts Parts No Description Destination Address parts Parts No Description Destination RK73GB1J100J 0 J RK73GB1J102J 1 0K J 1 16W RK73GB 3 3K J R92 1252 05 0 RK73GB 680 J RK73GB1J102J 1 0K 1 16W RK73GB 2 2K RK73GB1J222J 2 2K 1 16W RK73GB 50 RK73GB1J563J 56K 1 16W RK73GB RK73GB RK73GB RK73GB1 RK73GB 8K RN73GH1J333D 41K RN73GH1J274D RK73GB1J184J 41K RK73GB1J473J 00K RK73GB1J103J 33K 1 16W 1 16W 1 16W 1 16W 1 6W CX C3 C3 e RK73GB1 RK73GB RK73GB RK73GB RK73GB RK73GB1J564J RK73GB1J102J RK73GB1J473J RK73GB1J394J RK73GB1J474J 1 6W 1 6W 1 6W 1 6W 1 6W CO CO E RK73GB1J473J RK73GB1J104J R92 1252 05 RK73GB1J103J R92 1252 05 RK73GB RK73GB RK73GB1 RK73GB RK73GB 1 16W 1 16W 2 1 16W CO E RK73GB1J103J RK73GB1J153J RK73GB1
51. E 270 L40 1085 92 SMALL FIXE 100NH L40 1005 85 SMALL FIXE 10UH L40 1285 92 SMALL 120NH RK73GB 47K 1 16W RK73GB 1 16W RK73GB 00 1 16W RK73GB 1 16W RK73GB 8K 1 6W L40 1085 85 SMALL FIXE 0 10UH L40 5685 85 SMALL FIXE 0 56UH L92 0138 05 FERRITE CHI L92 0149 05 FERRITE CHI L92 0138 05 FERRITE CHI RK73GB 00 1 16W RK73GB 22 1 16W RK73GB 00 1 16W RK73GB DK 1 16W RK73GB 330 1 16W L92 0131 05 FERRITE CHIP L92 0138 05 FERRITE CHIP L33 0745 05 SMALL FIXED INDUCTOR L40 8288 76 SMALL FIXED INDUCTOR 0 82UH L34 4621 05 COIL RN73GH 50K 1 16W RK73GB 00K 1 16W RK73GB 1 16W RK73GB OK 1 16W RN73GH 50K 1 16W L34 4622 05 134 4446 05 COIL L40 4785 85 SMALL FIXED INDUCTOR 0 47UH RK73GB 0K 1 16W RK73GB 50 1 16W RK73GB 1 16W RN73GH 50K 1 16W RK73GB 0 1 16W L77 1794 05 TCXO 16 8MHZ L78 0479 05 RESONATOR 3 58 2 L77 1810 05 CRYSTAL RESONATOR 9 8304MHZ L71 0546 05 CRYSTAL FILTER 49 95MHZ RK73EB2 1 4W RN73GH 1 6W R92 1252 RK73GB 1 16W RN73GH 1 16W R90 0724 0 KCOMP 1K X4 R90 0741 0 PLE RESISTOR R90 0724 0 KCOMP 1K X4 R90 0741 0 PLE RESISTOR R90 0718 0 l COMP 4 7K X4 RK73GB J 1 16W RN73GH D 1 16W RK73GB J 1 16W RK73GB J 1 16W RK73GB J 1 16W RK75HA1J472J 47K RK73GB1J RK73GB1J104J RK73GB1J682J RK73GB1J RK73GB1J 20K 00K RK73GB1J 1 16W RK73GB1J 1 16W RK73GB1J 1 6W R92 0670 R92 1252 OK 5K
52. HT aix DEE a Sty ois a R123 5 E DEG 243 MP 38 D506 511 LCD BACK LIGHT H 0106 SI 25111 5 4 T 1966 zio 91 ya 9 x 75 L lt B 518 aT 5 S 81350HG KD 5 D22 222 3 04 819 LA E es SS E UT VOLTAGE REGULATOR SV REVERSE PROTECTION SES DEER 555 1 4 E DD ICQ RNS5VL45C 7 t i 54555265665 gt 315 NC E 5 MUTE SW 1 945 VOLTAGE DETECTOR INT o io 3 il R127 33k Is 5 HIE SI 5 5 le z CP10 1 m 5 PU I IE 98008 Rees 52 RIST 1k 4 n 2 030 SE AY i qur 2 RD 4 O 10k C183 R143 C206 ETC 100 10 L42 25 1588 gt 9 rem 3 My 180k 2149 6101 i c179 CHANNEL SWITCH Si 5 10 8 eso 2200 wi RIAT 47 0 lu POWER SWITCH 1 5 ALS DT 1 3 CLOCK SHIFT 5 266 100k 0510 cae AUDIO VOLUME w D6 De FREQUENCY SHIFT OFF 0V 22 d R148 e A17 D5 SHIFT gt 24589 Orde 2TONE AMP 8159 1k 22 t 5 2 3 Ic13 R128 R129 AF PRE 9 T ELE ale 1 1 2 2 4 DEIER o el Olu ola ago gt oit
53. Hz C126 R87 L306 22 18k LT 027 T R98 ey R101 lt amp 680 0 0 01 220 584 4922 05 Iles m i DEB ov UPA572T 428 ER H gt 100 26 2 al 5 n 2759 1 114 Slo ass 1 nan DTA114EE j 5 mE A A 2 2k 450k 5 4 1 est _ 140 4 _ 572 SW 5M DC SWITCH Q23 M LES 2 R116 15k W N AUDIO Rer SE 1 3 1 A 850 Xx XX AMPLITUDE E Ts 5 SAVE ON Ou S D21 ADJUST m 420 E ash alo L 2 OFF 5 1V 9159 VOLTAGE C147 St E T R117 1000p DROP SI SC Jo 4 ay Olx R100 LEN 3 926 DC SW SQUELCH H ae ase 21 226 5 o 214 ATk 156 155373 mc R249 0 E d 4 5 E p a NLS SL elso 545 8 SIS age LU a 47k BS DES zo SRZ S L39 C165 0 014 lt 214 25111 DACS a RESET ose 2 2 918 91804 518 a 5 4 S 81350HG KD 5 D22 pas 3 04 plo E x Jaco TAP VOLTAGE REGULATOR SV D 575 OUT REVERSE PROTECTION 972 ERRA 255 1 1 CPI S Ve DD 1 9 RN5VLAS5C 1 1 tu ou 15 p mE MUTE SW 1 GND
54. ISTO RK73GB1J 47 R92 1252 05 0 RK73GB1J102J 1 0K 12 7491 05 MMING POT 68K 8 DTA144EE DIGITAL TRANSISTOR DTC114EE DIGITAL TRANSISTOR DTA114YE DIGITAL TRANSISTOR DTC144EE DIGITAL TRANSISTOR FP210 TRANSISTOR 5401 570 0457 05 TACT SWITCH 402 403 70 0424 05 TACT SWITCH MIC1 191 0579 05 MIC ELEMEN 3SK166A FET UMG3N RANSISTOR 2504619 TRANSISTOR UMC4 RANSISTOR DTC114EE DIGITAL TRANSISTOR D1 25111 DIODE D2 MA2SV05 VARIABLI D3 HVU131 DIODE D4 MA2SV05 VARIABLI D5 HSC277 DIODE DTA114EE DIGITAL TRANSISTOR 572 FET DTA114YE DIGITAL TRANSISTOR 25 1588 2504619 TRANSISTOR D6 MA360 VARIABLE CAPAC D7 HSC277 DIODE D8 MA8062 ZENER DIODE 09 25304 VARIABLE 010 HSC277 DIODE 25304 VARIABLI D12 25111 DIODE DAN235E DIODE 015 HSC277 DIODE 017 25111 DIODE 2SA1362 GR RANSISTOR DTC144EE DIGITAL TRANSISTOR UPA672T FET 25 1824 FET 25 1215 019 25111 DIODE D21 155373 DIODE D22 158154 400 DIODE D23 RB706F 40 DIODE D302 303 HVC350B VARIABLE CAPACITANCE DIODE D305 HVC350B VARIABLE CAPACITANCE DIODE 260G TK 260G K M TK 260G M TK 270G M 270G TK 270G K M TK 260G K TK 270G K 29 TK 260G 270G EXPLODED VIEW TK 260G 2 3 A M2 6x4 N
55. ITE SCREW 04 0413 05 COAXIAL RECEPTACLE SMA E23 1006 04 RELAY TERMINAL BATT N79 2030 46 PAN HEAD TAPTITE SCREW 23 1125 14 RELAY TERMINAL BATT 22620 N83 2005 46 PAN HEAD SCREW 29 1177 04 INTER CONNECTOR LCD SCHEWSET E37 0805 05 HAT CABLE TX RX DISP R31 0628 15 VARIABLE RESISTOR E37 0829 05 SPEAKER LEAD ASSY E37 0830 05 FAT CABLHPTI 60 0413 05 ROTARY SWITCH F10 2302 04 SHIELDING COVER POWER MODULE 107 0326 05 SPEAKER F10 2304 03 SHIELDING COVER TX RX UNIT 107 0327 05 SPEAKER F20 3307 04 INSULATING SHEET TX RX UNIT F20 3308 04 INSULATING SHEET TX RX UNIT 190 0679 05 HELICAL ANTENNA M G01 0881 04 COIL SPRINGIBATT RELEASE 5 610 1232 04 FIBROUS SHEET SPEAKER 610 1233 04 FIBROUS SHEET SPEAKER UNIT X54 3250 10 TK 270G only G13 1744 14 CUSHION CHASSIS BATT D506 830 2210 05 LEDILCD BACK LIGHT G53 0881 02 PACKINGISIDE 508 510 30 2171 05 DIKEY BACK LIGHT 0511 830 2210 05 DILCD BACK LIGHT G53 0882 03 PACKING SPEAKER ECM G 0512 516 B30 2171 05 DIKEY BACK LIGHT G53 0883 04 PACKING BATT TERMINAL 653 0884 04 PACKINGIECM C501 509 CC73GCHIH221 CHIPC 220PF J G53 0885 04 PACKING SPEAKER C513 CK73GB1H102K CHIP 1000PF 653 0891 04 KNOB 515 516 CC73GCH1H101J 100PF J H12 1487 02 PACKING FIXTURE CN501 E40 6012 05 FLAT CABLE
56. J473J R92 1252 05 RK73GB1J473J RK73GB1J RK73GB1J RK73GB1J RK73GB1J R92 1252 CO CO CO E RK73GB RK73GB RK73GB RK73GB RK73GB RK73GB1J102J RK73GB1J104J RK73GB1J RK73GB1J RK73GB1J c o oo RK73GB1J102J RK73GB1J R92 1252 05 RK73GB1J101J RK73GB1J104J RK73GB1J R92 1252 RK73GB1J R92 1252 RK73GB1J CO CO 92 1252 05 RK73GB1J100J RK73GB1J101J RK73GB1J102J RK73GB1J151J RK73GB RK73GB RK73GB RN73GH RK73GB RK73GB1J102J R92 1252 05 RK73GB1J184J R92 1252 05 RK73GB1J474J R2 RK73GB R2 RK73GB R2 RN73GH R2 RN73GH R2 RK73GB CH OO CO E OO RK73GB1J472J RK73GB1J470J RK73GB1J220J RK73GB1J104J RK73GB1J102J R2 RK73GB1J R2 R92 1252 R2 RK73GB1J R220 221 RK73GB1J R222 RK73GB1J 37 63 RK73GB1J473J R223 RK73GB RK73GB1J823J R224 RK73GB1J RK73GB1J104J R225 RK73GB1J RK73GB1J564J R226 R92 1252 RK73GB1J473J R230 RK73GB1J RN73GH1J683 R231 RK73GB 260G 2606 K M TK 260G M TK 270G M 270G TK 270G K M TK 260G K TK 270G K TK 260G 270G PARTS LIST TX RX UNIT X57 5870 XX New Address parts Parts No Description De
57. K 10UF L92 0138 05 ERRITE CHIP C239 CK73GB1 140 3391 86 SMALL FIXED INDUCTOR 3 3U C240 CK73GB F L33 0745 05 SMALL FIXED INDUCTOR L34 4548 05 AIR CORE COIL C241 CK73GB1H102K F L34 4549 05 AIR CORE COIL C242 92 0560 05 243 CK73FB1A105K OUF L34 4548 05 AIR CORE COIL C244 C92 0560 05 L40 5675 92 SMALL FIXED INDUCTOR 56NH C245 CK73GB1H471K F L40 1095 34 SMALL FIXED INDUCTOR 1UH L40 1092 81 SMALL FIXED INDUCTOR C246 CK73FB1A105K 0UF L40 3391 86 SMALL FIXED INDUCTOR 3 3UH 260G TK 260G K M M TK 260G M TK 270G M 270G TK 270G K M TK 260G K TK 270G K TK 260G 270G PARTS LIST TX RX UNIT X57 5870 XX New New Address parts Parts No Description Destination Address parts Parts No Description Destination 140 1085 92 SMALL FIXED INDUCTOR 100NH 140 5675 92 SMALL FIXED INDUCTOR 56NH L34 4550 05 AIR CORE COIL L92 0138 05 FERRITE CHIP L40 1875 92 SMALL FIXED IN 8NH RK73GB1J472J 47K 1 16W RK73GB1J122J 1 2K 1 6W RK73GB1J561J 560 1 6W RK73GB1J270J 27 1 16W RK73GB1J271J 270 1 16W L40 1085 92 SMALL FIXED IN OONH L92 0138 05 FERRITE CHIP L40 5681 86 SMALL FIXED IN 56UH L40 1085 92 SMAL D IN OONH L33 0745 05 SMALL FIXED IN RK73GB1J182J Dk 1 6W RK73GB1J101J 00 1 6W RK73GB1J101J 00 1 6W RK73GB 47K 1 16W RK73GB1J104J 00K 1 16W L92 0149 05 FERRITE CHI L40 2702 86 SMALL FIX
58. MO all Begin of TX ID Data clear Not valid if Dial ID Disable and PTT ID off or BOT is set TK 260G 270G REALIGNMENT 8 3 Function Setting Mode This is a mode for using the panel keys to make function settings without using the FPU that operate on all channels Function Choices Display Remarks MONI Monitor B MON 18 Monitor 19 Pressing the LAMP when SELF is displayed sets the Monitor D 20 Function Setting Mode RF Power Low MON 21 Select an item set using gt then change the selection with Scan MON 22 TK 260G cannot be selected the encoder Scan DELIADD 23 2606 cannot be selected The data displayed using lt a is stored in the memory and Group Down 24 TK 260G cannot be selected then proceeds to the next item Pressing gt proceeds to Group 25 2606 cannot be selected the next item without storing it in the memory Press LAMP to display SELF and return to reset default status Scrambler MON 26 Only when scrambler is set O TK270G No Function KEY1 OFF only Talk Around KEY1 3 Function Setting Mode Display Character KEY1 5 Home Channel KEY1 7 Channel Down KEY1 8 Channel Up KEY1 9 Keylock KEY1 10 Lamp KEY1 11 Selectable QT KEY1 15 destination only Monitor A KEY1 17 Monitor KEY1 18 Monitor KEY1 19 Monitor D KEY1 20 RF Power Low KEY1 21 Scan KEY1 22 Scan DELADD KEY1 23
59. NT TX RX 150 174MHz RX 399 9 447 9MHz TX 300 348MHz Fig 1 Frequency configuration 2 Receiver The frequency configuration of the receiver is shown in Fig 2 1307 L306 305 0303 0302 305 MIXER IF AMP BPF 019 022 0301 E E 151 Local TUNE TUNE 1 2 DIVDER 01 PLL VCO CF2 Narrow AF AMP AF AMP AF AMP IC16 2 2 1 15 2 2 AF VOL 1 11 2nd Local X3 multiply 012 Cu 2 1 PE HPE BEF HOLEHOLHYHE ETHER Lee ee ee ee ee el Fig 2 Receiver section 1 Front end RF AMP The signal coming form the antenna passes through the transmit receive switching diode circuit D3 D7 passes through a BPF L307 and is amplified by the RF amplifier Q301 The resulting signal passes through a BPF L305 and L306 and goes to the mixer These BPFs are adjusted by variable capacitors D302 303 305 The input voltage to the variable capacitor is regulated by voltage output from the microprocessor 13 2 First mixer The signal from the front end is mixed with the first local oscillator signal generated in the PLL circuit by Q19 to produce a first IF frequency of 49 95 MHz The resulting signal passes through the XF1 MCF to cut the adjacent spurious and provide the opitimun characteristics such as adjacent frequency selectivity 3 IF Amplifier circuit The first IF signal is passed throug
60. ONE MONI ads a Pls 4 1 i 4 EL IC17 OFF 5 egg ae a Ch H 5600p 9 m e u D A CONVERTER R205 R206 R207 X57 5870 10 2 ei EIIE I IC19 ES d Troes So Wc to i VOLTAGE CLAMP 5 TX AF ADJUSTMENT 5 maa 9 ACTIVE FILTER TAT5WO1FU 5 m sw 230 5600 R202 ni 9 O SP MUTE 1 470 100 al ola 6 A 9 FOR LSDin R183 98 4 MIC M TEO 4 R240 2 n h s 5 1V d Ogo in ale 233 5 19 20 tix pir A LC73872M 5 8 233 8 0 1V Bd em 22k 100k 22k x ni Mz 25 gt On 150 R210 236 7 R237 R211 2 19 5 PTT aya DTMF DECODER 144 239 e C240 2700p C235 950019 ala 8 5 a R209 470k lu 10k PTT 1 1 elg 5 Nro 0 0 R213 R212 2700 220k 55 215 2 a 5 S LAMP R182 R176 NT R241 260 OTS 16 Fm 878 19 oje a E LAMP MONI 4 The de o 220k 41 220 25 5 BUFFER AMP 0 5 0 5 DR m sl E 5 5 g 518 2 42 oru o 20 1 1 H 2 H H L Bee eee 9 9
61. Power H P 0 W Power Hi Hi Power Cen gt LPOW L POW L P OW L P 0 W L P 0 W L P 0 W gt JL Low Power Low gt LowPower Cen LowPower Hi P LowPower Hi Narrow AX deviation Narrow 3 FQT 3 3 ev M A X MAX M A X Max deviation W C Max deviation H gt H e le F DQT F D Q T F D Q T b YU Fine deviation Narrow DTMF Fine deviation Wide gt quate ine LAMP Kagepe deretonwa 5 5 Sensitivity Low Sensitivity Cen Battery warning level Wide Narrow e GTVCO balance gt Y e X QT balance W C QT V D Q T V D Q T VCO balance W C i gt e TAMP XDQT X D QT 0 0 X D Q T gt gt 5 5013 RSSI Squelch open Wide RSSI Wide b RSSI Narrow Wide 5019 gt 35 zu TK 260G 270G ADJUSTMENT Since the TK 260G cannot be tuned from the panel the FPU KPG 56D should be used for adjustment Adjust the
62. SMA f N f for adjustment The adapter is not provided as an option so buy a commercially available one Note When the antenna connector adapter touches the knob draw out the knob to mount the connector 5V to 10V approx 3A Useful if ammeter equipped Repair Jig Chassis 1 Jig chassis Part No A10 4009 03 for adjustment 2 Use the jig as follows Place the TX RX unit on the jig and fix it with thirteen Screws Solder the antenna terminal of the TX RX unit 3 Supply power from an external power supply Relay terminal 7 5 Jig Chassis Coaxial antenna connector nu 33 TK 260G 270G 34 ADJUSTMENT Repair Jig Extention Flat cable part No E37 0851 05 This cable is used for connecting the TK 270G display unit and TX RX unit when you test or repair the transceiver Extention Flat cable Caution You must connect TK 270G display unit when you test or repair the transceiver Test Mode TK 270G only Test mode operating features This transceiver has a test mode To enter test mode press the lt key and turn the power on Hold the lt key until the test channel No and test signalling No appear on LCD Test mode can be inhibited by programming To exit test mode switch the power on again The following functions Frequency and signalling The set has been adjusted for the frequencies shown in the following table When required re adjust the
63. STB PLL strobe output Latch L SAVE Battery save output 07 00 Flash memory data bus KEYAD MONI LAMP key input BATT Battery voltage input RFDAT PLL data output RFCLK PLL clock output NC NC RSSQL Receive signal strength indicator input ANLSQL Analog squelch level input AVSS GND signal input VREF Reference voltage input GND DTMPD IC power control Power down DTMCLK DTME IC decode clock output DTMDAT DTME IC decode data input Shift register 1 BU4094BCFV IC5 Pin function Function W N Wide Narrow SW Narrow L MUTE RX audio MIC mute Mute L NC NC LEDO RED LED LED lights BSHIFT Beat Shift Shift on H REG2 Base Band IC inter register select 2 REG1 Base Band IC inter register select 1 O LED GREEN LED LED lights Shift register 2 BU4094BCFV IC6 Pin function Function 5MC 5MC control Power on L 5RC 5R control Power on L 5TC 5T control Power on H SPMUTE AF amp power supply control Power on H AUX6 Option board port 6 5 Option board port 5 LCDBLK LCD back light Back light on L O RX RX T
64. TK 260G 270G OPERATING FEATURES 7 o e 4 keys These are PF Programmable Function keys Press each key to activate its auxiliary function DTMF keypad Used for storing and transmitting DTMF numbers 9 SP MIC jacks Connect an optional speaker microphone here Display See page 5 Note The PF keys are programmed with default functions Side 1 key Lamp Side 2 key Monitor A key Scan e key Scan Del Add 4 key Talk Around gt key RF Power Lo Programmable Auxiliary Functions Side 1 Side 2 e lt and gt can be programmed with the auxiliary functions listed below Channel Down Channel Up Display Character Group Down Group Up Home Channel Key Lock Lamp Monitor A Monitor B Monitor C Monitor D None Operator Sel Tone Redial Power Lo Scan Scan Del Add Scrambler Selectable QT Talk Around 2 Tone Encode Select Monitor Unmute Momentary Monitor Unmute Toggle Carrier Squelch Momentary Carrier Squelch Toggle anans 1 Available for and M market models only Available for M market models only 2 Programmable keys The functions the FPU programs to the function keys are described in the following sections 1 Channel up down TK 270G only When the key is pressed each time the channel number to be selected is incremented decremented and repeats if held for one second or longer Thi
65. UAL This manual is intended for use by experienced technicians familiar with similar types of commercial grade communications equipment It contains all required service information for the equipment and is current as of the publication date Changes which may occur after publication are covered by either Service Bulletins or Manual Revisions These are issued as required ORDERING REPLACEMENT PARTS When ordering replacement parts or equipment information the full part identification number should be included This applies to all parts components kits or chassis If the part number is not known include the chassis or kit number of which it is a part and a sufficient description of the required component for proper identification PERSONNEL SAFETY The following precautions are recommended for personnel safety e DO NOT transmit until all RF connectors are verified secure and any open connectors are properly terminated X57 587X XX X54 325X XX Model amp destination 0 1110 21 0 10 SHUT OFF and DO NOT operate this equipment near electrical blasting caps or in an explosive atmosphere e This equipment should be serviced by a qualified technician only SERVICE This radio is designed for easy servicing Refer to the schematic diagrams printed circuit board views and alignment procedures contained within NOTE WE CANNOT guarantee oscillator stability when using channel element m
66. X VCO SW RX L TK 260G 270G DESCRIPTION OF COMPONENTS DISPLAY UNIT X54 3250 10 TK 270G Only Ref No Use Function Operation Condition 501 LCD driver Q501 Transistor Current driver LCD back light LED AVR 0502 Transistor switch D505 Diode Speed up Ref No Use Function Operation Condition Q23 Transistor switch WIN audio amplitude adjust 24 Transistor switch LED Red Q25 Transistor Switch LED Green Q26 Transistor switch Squelch Q27 FET DC switch 5T Q28 Transistor switch 5M Q30 FET SP Mute switch Q31 Transistor Clock frequency shift Q32 34 Transistor DC switch SP Mute Q35 1 2 FET Mute switch MIC line mute Q35 2 2 FET DC switch TX RX UNIT X57 587X XX Q36 Mute switch Q301 FET RF amplifier D1 Diode Unlock detect Variable D2 capacitance diode Frequency control D3 Diode ANT switch Variable D4 capacitance diode Frequency control D5 Diode TX RX switch Variable 96 capacitance diode D7 Diode ANT switch D8 Zener Diode Overload protection Variable D9 capacitance diode Frequency control Diode ANT switch Variable D11 capacitance diode Frequency control D12 Diode Current steering D13 14 Diode RF switch 219 IF wide narrow D15 Diode Reverse protection D17 Diode Model check D18 LED LED Red Green 19 Diode Model check 021 Diode Voltage drop D22 Diode Reverse protection D23 Diode Voltage clamp Variable cap
67. a flashing red LED and a beep Please notice indication for the battery exchange charging time by flashing red LED and beep 5 TOT Pre Alert The transceiver has pre alert timer This parameter selects the time at which the transceiver generates a TOT pre alert tone before the TOT is expired TOT will expire when the selected time passes from the TOT pre alert tone 6 TOT Re Key Time The transceiver has a re key timer This timer is the time you cannot transmit after the TOT is exceeded After the TOT re key time expires you can transmit again 7 TOT Reset Time The transceiver has reset timer This timer is the minimum wait time allowed during a transmission that will reset the TOT count TOT reset time causes the TOT to continue even after the PTT is released unless the TOT reset timer has expired 8 OST Operator Selectable Tone TK 270G K types only The transceiver is capable of having the OST function and 16 tone pairs QT DQT with a max 10 digit name for each tone pair 9 Clear to Transpond The transceiver waits for an acknowledment signal until the channel free This feature ensures the acknowledment signal is receive by another party 10 Battery Save This is the automatic battery saver during standby mode operation The receiver circuit is turned on and off to conserve the battery life 6 Option Signalling DTMF 2 tone Built in DTMF de
68. acitance diode 0506 LED LCD back light D507 Diode Voltage reference 0508 5101 LED LED Key pad back light D511 LED LCD back light 0512 5161 LED LED Key pad back light Ref No Use Function Operation Condition RF Power Module 2 PLL system IC3 Comparator APC 1 4 FM IF system 5 6 Shift register Output expander Voltage regulator 5V Voltage detector Reset IC9 Voltage detector INT IC10 EEPROM IC11 AF Power amplifier 2 Microprocessor 4 Audio processor 15 1 2 2Tone amplifier 15 2 2 AF Pre amplifier 16 1 2 Bias buffer 16 2 2 AF Buffer amplifier D A converter TX AF adjustment IC18 DTMF decoder IC19 Active filter For LSD in 301 VCO 1 2 divider Q1 Transistor PLL IC fin amplifier Q2 Transistor VCO oscillation TX Q3 Transistor RF Buffer amplifier 04 Transistor RF amplifier Q6 Transistor RF amplifier TX driver Q7 FET DC switch Transistor switch FET VCO oscillation RX Transistor Ripple filter Transistor Tripler Transistor switch Transistor 219 IF W N switch sets to on when Narrow Transistor switch Transistor switch 5R Transistor 22 IF W N switch sets to on when Wide Transistor DC switch 5T Save FET Mixer Transistor DC switch 5T Save Transistor IF amplifier
69. anufactured by other than KENWOOD or its authorized agents Remarks Helical Antenna Charger Battery TK 260G K M K O 150 174MHz M TK 270G SYSTEM SET UP License and frequency allocated by FCC Choose the type of transceiver Transceiver programming Are you using the speaker microphone Frequency range 2 RF power 150 174 TK 260G K M TK 270G A personal computer IBM PC or compatible programming interface KPG 22 and programming software KPG 56D are required for programming The frequency TX power HI LOW and signalling data are programmed for the transceiver KMC 17 or KMC 21 Speaker microphone Option OP IF1 49 95MHz LOC 50 4MHz OP TK 260G 270G OPERATING FEATURES 1 Operation Features TK 260G Channel selector Rotate to select a channel 1 8 Power switch Volume control Turn clockwise to switch ON the transceiver Rotate to adjust the volume To switch OFF the transceiver turn counterclockwise fully Antenna LED indicator Lights red while transmitting Lights green while receiving Flashes orange while receiving a 2 Tone or DTMF signal that matches the one set up in your transceiver Speaker Flashes red when the battery power is low while transmitting PTT Push to Talk switch Press this s
70. arations for tuning the transceiver Before attempting to tune the transceiver connect the unit to a suitable power supply Whenever the transmitter is tuned the unit must be connected to a suitable dummy load i e power meter The speaker output connector must be terminated with a 8Q dummy load and connected to AC voltmeter and audio distortion meter or a SINAD measurement meter at all times during tuning Transceiver tuning To place the transceiver in tuning mode Channel appears on the LCD Set the channel according to the tuning requirements LCD display Test mode Signalling No TK 260G 270G ADJUSTMENT Press to enter tuning mode Use the 4 key to write Panel Tuning Mode tuning data through the tuning modes and the channel selector knob to adjust the tuning requirements 1 to 256 appears on LCD Use the gt key to select the adjustment item through the tuning modes Use the 6 key to adjust 3 or 5 point tuning and use the LAMP key to switch between Wide Narrow 150 174 MHz RX frequency MHz TX frequency MHz 150 05000 150 00000 156 05000 156 00000 162 05000 162 00000 168 05000 168 00000 LCD display Tuning mode wige Narrow indicator 173 95000 174 00000 HP O Wine Adjustment 1 256 Adjustment item Point tuning indicator Tuning mode H P OW Hi Power Low H P 0 W Hi
71. ata clear 000 9999999999999999 71 Not valid if Dial ID Disable and PTT ID OFF or EOT is set Display when an item is selected about 0 5 seconds 12345678 Display of the current setting If it is 8 or more digits scroll it 47 Display when a code is input Input it with key LAMP Data clear Flow Chart Channel Setting Mode 4 Self programming mode MO Channel set mode Channel selection gt gt MO End of TX ID Data clear eem LANP LAMP LAMP 0 LAMP NDS LAMP LAMP ot used when Scan Priority is not Fixed ot used when Home Channel is not set in key Assignment ot used when Wide is selected Not valid if Dial ID Disable and PTT ID off or EOT is set 4 MO 4 RX frequency OFF LAMP lt gt MO RX signaling OFF LAMP 41 MO 1 TX freguency I OFF LAMP 411 MO mem TX signaling OFF LAMP lt gt MO option signaling ali ID gt Data clear LAMP Data lt gt Busy channel lockout lt gt MO Best Shift yes no 4 MO RF Power High Low 4 MO Wide Narrow 4 0 Scan delete add 4 MO um Priority channel 4 MO Home channel 4 MO Compander yes no lt gt MO PTT ID
72. coder is available for option signalling Built in 2 Tone decoder is available for option signalling It is possible to use individual call group call DBD Dead Beat Disable Note DBD is only DTMF Preset operation is triggered when there is a match with Option Signaling When Option Signaling matches on a Group Channel where it is set to Yes the Option Signaling display flashes and Option Signaling is canceled Settings after this will cause or Alert to sound Setting the Selective Call Alert LED will cause the LED to start flashing orange Mute or Unmute is triggered by the ID QT DQT Carrier when option signaling matches when Option Signal is deactivated by a transmission AND OR Option Signaling match conditions can be selected with AND OR logic Alert Transpond AF Mute Open Triggers at match with QT Triggers at match with QT DQT ID DTMF 2tone Opt DQT ID DTMF 2tone Opt Triggers at match with QT Triggers only for match with DQT ID DTMF 2tone Opt QT DQT ID Signaling Even if set as OR there is no Alert Transpond just with DTMF Even if set as OR AF mute cannot be canceled just by a match with DTMF In conventional channels not set with QT DQT signaling is a match just by receiving the carrier Auto Reset When Option Signaling matches on a Group channel where itis set to Yes Option Signaling is canceled when it matches a group channel set to Yes After Option
73. d channel The transceiver reverts to the channel before scanning or the channel that you changed during scan 4 Last called channel The transceiver reverts to the last called channel during scan 5 Last used channel The transceiver reverts to the last used transmitted channel during scan Last used revert channel includes talkback function Selected with talkback The transceiver reverts to the channel before scanning or the channel that you changed during scan 8 Scan End When you reactivate the key programmed to the scan function during scan mode scan ends The scan icon SCN and SCAN or revert channel programmable display goes off 9 Temporarily Delete Add It is possible to delete or add a channel temporarily during scan When scan stops on an unnecessary channel for example by interference of the other party press the delete add key then that channel is deleted temporarily and scan will re start immediately When you would like to add a deleted channel temporarily to the scan sequence select the desired deleted channel during scan and press the delete add key before scan re starts That channel is added temporarily to the scan sequence The temporarily deleted or added channels are returned to their pre set delete add conditions when the transceiver exits from scan mode 5 Details of Features 1 Time out timer The time out timer can be programmed in 15 seconds increments from 15 seconds to 300 I
74. e 0 9 0 s Default Can be set only when e Flow Chan Code DTMF signaling SEL CALL Group Codel 0 9 A D GPCD_FF_ Default OFF unction Setting Mode na 1 up Auto Rest OFF ART OFF m Self programming mode km Squelch level Group code Time 1 15 1s ART 10 Default 10s UE LAMP m yp L it Call Aen OFF CA T OFF Default Function set mode Priority le reegt time Transpond Alert CA vu ji y ia Transpond CA T_T A LAMP key function _ Look back time A 1 Callalert Transpond T lt i gt 4 14 CAT 1 key function lt Lookbacktime B LAMP Panel test Panel tuning mode ID Code 1 lt gt 1 lt gt LAMP LAMP key function Revert channel Transpond CA T_T T tanspond Code lt gt lt gt Others LAMP 3 ILAMPI 4 01 key function te Dropout delay time 40 Panel Testpanel Enable Default Not used for TK 260G gt Tuning MODE Disable DIS LAMP LD pagg 6 1 4 key function Dwell time 411 LAMP 28 48 1 gt key function c Digit time lt gt lt gt LAMP LAMP 1 CH key function 1 Inter digit
75. e Data such as DTMF memorise and the operating status are programmed into the EEPROM IC10 Flash Memory Note The flash memory holds data such as written with the FPU KPG 56D and firmware program User mode Test mode Tuning mode etc This data must be rewritten when replacing the flash memory e EEPROM Note The EEPROM stores tuning data Deviation Squelch etc Realign the transceiver after replacing the EEPROM IC13 IC10 CPU KH EEPROM FLASH 1 12 Fig 9 Memory circuit 3 Low battery warning The battery voltage is monitored by the microprocessor IC13 When the battery voltage falls below the voltage set by the Low Battery Warning adjustment the LED flashes red to notify the operator that it is time to replace the battery If the battery voltage falls even more approx 5 8V a beep sounds and transmission is stopped Low battery warning Battery condition The red LED flashes during The battery voltage is low but transmission the transceiver is still usable The red LED flashes and The battery voltage is low and continuous beep sounds the transceiver is not able to while PTT is pressed make calls 7 Optional Board Terminal Terminals for mounting the option board are provided at the bottom edge of the TX RX unit The table below shows the correspondence between the board and terminals Optional Board Terminal Function CN5 Pin Name UO Function GND GND SB Power outp
76. ed commands from PC Panel tuning mode Panel test mode O Firmware programming mode LAMP MONI Power ON Two seconds Clone mode LAMP gt Power ON Two seconds Self programming mode LAMP Power ON Two seconds TK 270G only 3 For the panel Test Mode TK 270G only For the setting method refer to ADJUSTMENT 3 1 For the panel Tuning Mode For the setting method refer to ADJUSTMENT TK 260G 270G REALIGNMENT 4 Checksum Executing this function TUNING appears on the display of TK 270G while calculating the checksum When the calculation is completed the display returns to normal and PC displays the checksum of the radio 5 PC Mode 5 1 Preface The TK 260G 270G transceiver is programmed using a personal computer a programming interface KPG 22 and programming software KPG 56D The programming software can be used with an IBM PC or compatible Figure 1 shows the setup of an IBM PC for programming 5 2 Connection procedure 1 Connect the TK 260G 270G to the personal computer with the interface cable 2 When the POWER is switched on user mode can be entered immediately When the PC sends a command the radio enters PC mode When data is transmitted from transceiver the red LED blinks When data is received by the transceiver the green LED blinks Notes The data stored in the personal computer must match the model type when it is written into the flas
77. ed for Alignment Test Equipment TK 260G 270G ADJUSTMENT Major Specifications Standard Signal Generator SSG Frequency Range Modulation Output 150 to 175MHz Frequency modulation and external modulation 127dBm 0 1uV to greater than 47dBm 1mV Power Meter Input Impedance Operation Frequency Measurement Range 50Q 150 to 175MHz or more Vicinity of 10W Deviation Meter Frequency Range 150 to 175MHz Digital Volt Meter DVM Measuring Range Input Impedance 10mV to 10V DC High input impedance for minimum circuit loading Oscilloscope DC through 30MHz High Sensitivity Frequency Counter Frequency Range Frequency Stability 10Hz to 1000MHz 0 2ppm or less Ammeter AF VTVM Frequency Range Voltage Range 50Hz to 10 2 1mV to 10V Audio Generator AG Frequency Range Output 50Hz to 5kHz or more 1V Distortion Meter Capability Input Level 3 or less at 1kHz 50mV to 10Vrms Spectrum Analyzer Measuring Range DC to 1GHz or more Tracking Generator Center frequency Output Voltage 50kHz to 600MHz 100mV or more 80 Dummy Load Approx 80 3W Regulated Power Supply The following parts are required for adjustment 1 Antenna connector adapter The antenna connector of this radio uses an SMA terminal Use an antenna connector adapter SMA f BNC f or
78. er all channels programmed with high power are changed to low 2 Tone Encode Select To transmit using a 2 Tone code press the PTT switch and the 2 Tone Encode Select key then speak into the microphone in your normal voice Release the PTT switch and 2 Tone Encode Select key to receive TK 270G Antenna The transceiver is shown with the optional KNB 14 battery pack D Rotary encoder Your dealer can program the encoder as either Group Up Down or Channel Up Down default setting Rotate to select a group or channel Also rotate to adjust the squelch in Squelch Adjustment mode 2 LED indicator Lights red while transmitting Lights green while receiving Flashes orange while receiving a Code Squelch code or a Selective Call code or a 2 Tone or DTMF signal that matches the one set up in your transceiver Flashes red when the battery power is low while transmitting 9 Power switch Volume control Turn clockwise to switch ON the transceiver Rotate to adjust the volume To switch OFF the transceiver turn counterclockwise fully PTT Push to Talk switch Press this switch then speak into the microphone to call a station 5 Side 1 key This is a PF Programmable Function key Press it to activate its auxiliary function page 4 6 Side 2 key This is a PF Programmable Function key Press it to activate its auxiliary function page 4
79. f the transmitter is keyed continuously for longer than the programmed time the transmitter is disabled and a warning tone sounds while the PTT button is held down The alert tone stops when the PTT button is released 2 Selective Call Alert LED You can select whether or not the LED on the transceiver flashes orange when selective call has occurred 3 PTT ID PTT ID provides a DTMF ANI to be sent with the PTT button every time it is used Begin of TX ID at beginning of transmission End of TX ID at end of transmission or both You can program the PTT ID as one of the followings Off BOT Begin of TX ID EOT End of PTT ID BOTH The contents of ID are programmed for each channel The transceiver is capable of having ID The format is DTMF The timing that the transceiver sends the ID is programmable Begin of TX ID BOT Begin of TX ID is sent at the beginning of transmission End of TX ID EOT End of TX ID is sent at the end of transmission Both Begin of TX ID is sent at the beginning of transmission and End of TX ID is sent at the end of transmission There is also ID setting for each channel TK 260G 270G OPERATING FEATURES 4 Battery Warning This transceiver has a battery warning feature If low voltage is detected during transmission the transceiver warns you by a flashing red LED When the voltage is detected to be even lower during transmission the transceiver stops transmission and warns you by
80. g 8 Drive and final amplifier and APC circuit 3 APC circuit The APC circuit always monitors the current flowing through the RF power amplifier IC1 and keeps a constant current The voltage drop at R56 R57 and R58 is caused by the current flowing through the RF power amplifier and this voltage is applied to the differential amplifier IC3 1 2 1C3 2 2 compares the output voltage of IC3 1 2 with the reference voltage from IC13 and the output of IC3 2 2 controls the VGG of the RF power amplifier to make both voltages the same The change of power high low is carried out by the change of the reference voltage 4 Encode signaling 1 QT DQT Low speed data QT DQT data of the TOTCXO Line is output form pin 20 of the CPU The signal passes through a low pass CR filter and goes to the TCXO X1 The QT DQT data of the TOVCO Line is output form pin 22 of the CPU The signal passes through a low pass CR filter mixes with the audio signal and goes to the VCO modulation input TX deviation is adjusted by the CPU See fig 7 2 DTMF 2 TONE High speed data High speed data is output from pin 2 of the CPU The signal passes through a low pass CR filter and provides a TX and SP out tone and is then applied to the audio processor IC14 The signal is mixed with the audio signal and goes to the VCO TX deviation is adjusted by the CPU See fig 7 5 Power supply There are five 5V power supplies for the microprocessor 5V 5M 5
81. h a four pole monolithic crystal filter XF1 to remove the adjacent channel signal The filtered first IF signal is amplified by the first IF amplifier Q22 and then applied to the IF system IC 4 The IF system IC provides a second mixer second local oscillator limiting amplifier quadrature detector and RSSI Received Signal Strength Indicator The second mixer mixes the first IF signal with the 50 4MHz of the second local oscillator output TCXO X3 and produces the second IF signal of 450kHz The second IF signal is passed through the ceramic filter CF1 Wide CF2 Narrow to remove the adjacent channel signal The filtered second IF signal is amplified by the limiting amplifier and demodulated by the quadrature detector with the ceramic discriminator CD1 The demodulated signal is routed to the audio circuit 4 Wide Narrow changeover circuit Narrow and Wide settings can be made for each channel by switching the ceramic filters CF1 Wide and CF2 Narrow The WIDE high level and NARROW low level data is output from IC5 OUTPUT EXPANDER pin 4 When a WIDE high level data is received Q14 turn off and Q17 turn on When a NARROW low level data is received Q14 turn on and Q17 turn off D14 and D13 are switched to ceramic filters when a high low level data is received Q23 turns on off with the Wide Narrow data and the IC4 detector output level is changed to maintain a constant output level during wide or narrow signals
82. h memory Change the TK 260G 270G to PC mode then attach the interface cable 5 3 KPG 22 description PC programming interface cable Option The KPG 22 is required to interface the TK 260G 270G to the computer It has a circuit in its D subconnector 25 pin case that converts the RS 232C logic level to the TTL level The KPG 22 connects the SP MIC connector of the TK 260G 270G to the computers RS 232C serial port 5 4 Programming software description The KPG 56D programming disk is supplied in 3 1 2 disk format The software on this disk allows a user to program the TK 260G 270G radios via a programming interface cable KPG 22 5 5 Programming with IBM PC If data is transferred to the transceiver from an IBM PC with the KPG 56D the destination data basic radio information for each set can be modified Normally it is not necessary to modify the destination data because their values are determined automatically when the frequency range frequency type is set The values should be modified only if necessary Data can be programmed into the flash memory in RS 232C format via the universal connector KPG 56D installation manual part No B62 1153 XX KPG 56D 6 Firmware Programming Mode 6 1 Preface Flash memory is mounted on the TK 260G 270G This allows the TK 260G 270G to be upgraded when new features are released in the future For details on how to obtain the firmware contact Customer Service 6 2 Co
83. is divided at IC2 by a fixed counter to produce an oscillator VCO output signal which is buffer amplified by Q3 then divided in IC2 by a dual module programmable counter The divided signal is compared in phase with the 5 or 6 25kHz reference signal from the phase comparator in IC2 The output signal from the phase comparator is filtered through a low pass filter and passed to the VCO to control the oscillator frequency See Fig 5 2 VCO The operating frequency is generated by Q2 in transmit mode and Q10 in receive mode The oscillator frequency is controlled by applying the VCO control voltage obtained from the phase comparator to the varactor diodes D2 and D4 in transmit mode and D9 and D11 in receive mode The T R pin is set high in receive mode causing Q7 and Q8 to turn Q2 off and Q10 on The T R pin is set low in transmit mode The outputs from Q10 and Q2 are amplified by Q3 and sent to the buffer amplifiers The outputs from Q3 to Q4 is divided into 1 2 in passing through a Divider IC IC301 and goes to the RF amplifiers Q1 RF AMP LPF Q3 Q4 BUFF AMP RF AMP Q7 8 T R SW 02 4 2 PLL IC 102 5kHz 6 25kHz PLL DATA PHASE COMPARATOR REF OSC 5kHz 6 25kHz 16 8MHz Fig 5 PLL circuit TK 260G 270G CIRCUIT DESCRIPTION 3 UNLOCK DETECTOR If a pulse signal appears at the LD pin of IC2 an unlock condition occurs and the DC
84. le LAMP 26 when scrambler is set MONI No Function MON OFF Talk Around MON TK 260G cannot be selected Display MON 5 TK 260G cannot be selected Home Channel 7 TK 260G cannot be selected Channel Down MON 8 TK 260G cannot be selected Channel Up MON 9 TK 260G cannot be selected Keylock MON 10 TK 260G cannot be selected Lamp MON 11 TK 260G cannot be selected Selectable QT MON 15 TK 260G cannot be selected M destination only Monitor MON 17 Default 13 TK 260G 270G REALIGNMENT Function Choices Display Remarks No Function Choices Display Remarks Group Up 2 25 only Scrambler KEY2 26 when scrambler is set 8 Power On Tone YES NO _ Default YES 4 1 706 No OFF 9 Control YES NO CNTT YES Default YES only Talk Around KEY3 3 Default 10 Warning Tone YES NO _ WART YES Default YES Display Character 5 11 Time Out Timer OFF 15 300 15s 60 Default 60s Home Channel 7 12 TOT OFF 1 10 Cannot be set when TOT is OFF KEY3 8 Pre Alert Time 1s Step Default OFF KEY3 9 13 TOT OFF1 60 TOTK OFF Cannot be set when TOT is OFF Channel Down Channel Up 10 Rekey Time 1
85. m following the adjustment procedure to obtain the frequencies you want in actual operation Frequency MHz KM Channel No RX Frequency 162 05000 150 05000 173 95000 162 00000 162 20000 162 40000 TX Frequency 162 00000 150 00000 174 00000 162 00000 162 20000 162 40000 RX TX None 100Hz square wave None None QT 67 0Hz QT 67 0Hz QT 151 4Hz QT 151 4Hz QT 210 7Hz QT 210 7Hz QT 250 3Hz QT 250 3Hz DOT 023 DOT D023N DOT 07541 DOT 07541 DTMF DEC 159D DTMF ENC 159D None DTMF tone 9 2 tone 321 7 928 1Hz None are available in test mode Controls PTT Used when making a transmission MON Monitor ON and OFF LAMP Changes wide and narrow 0 Sets to the Tuning mode e Unused 4 RF power HIGH and LOW gt Changes signalling O to 9 and and A to D Used as the DTMF keypad If a key is pressed during transmission the DTMF corresponding to the key that was pressed is sent ENCODER Changes channel LCD indicator LO Lights at RF Power Low gQ Lights at moniter ON LED indicator Red LED Lights during transmission Blinks during low battery voltage warning Green LED Lights when there is a carrier Single tone 1200Hz Single tone 1200Hz Prep
86. n For the channels that can be selected with the group or channel selector when the scan does not occur the A icon lights 5 Priority Channel Setting A priority channel can be set as follows with the programming software KPG 56D Specify a priority channel as a fixed priority channel 2 Make a selected channel a priority channel Specify the initial channel before the operator changes it 6 Scan Type According to the Priority Channel When no priority channel is set Only the non priority channels are scanned If a non priority channel stops temporarily it stops until there is no signal on the channel When priority channel is set Either priority channel is scanned If a non priority channel stops temporarily a priority channel signal is detected at certain intervals If a priority channel stops temporarily it stops until there is no signal on the priority channel 7 Revert Channel The revert channel is used to transmit during scanning and set by the programming software KPG 56D D Priority The transceiver reverts to the priority channel 2 Priority with talkback The transceiver reverts to the priority channel If you press PTT during a resume timer dropout delay time TX dwell time or calling you can transmit on the current channel to answer to the call however revert channel is set to priority channel After resume time scan re starts and the transmission channel returns to the priority channel Selecte
87. ng Code Squelch or Selective Call Appears while scanning Appears when using low power on the selected channel Appears when the selected channel is included in the scanning sequence Displays the selected channel the squelch level DTMF digits when entering digits confirming digits or making a call and messages received via Selective Call 4 Scan Operating TK 270G only 1 Scan types Single Group Scan You can scan all valid ADD channels in the displayed group that can be selected with the group selector Multiple Group Scan You can scan all valid ADD channels in all valid ADD groups 2 Scan Start Condition One or more non priority channels must be added to all channels that can be scanned The transceiver must be in normal receive mode PTT off When you activate the key programmed to the scan function scan starts The scan icon SCN lights and SCAN is indicated on display TK 260G 270G OPERATING FEATURES 6 3 Scan Stop Condition The scan stops temporarily if the following conditions are satisfied The receiving signal matches the signalling code in your radio that is set by the programming software KPG 56D When the Monitor key is depressed 4 Scan Channel Types Priority channel is the most important channel for scan and always detects a signal during scan and when the scan stops temporarily Non priority channels detect a signal during sca
88. nnection procedure Connect the TK 260G 270G to the personal computer IBM PC or compatible with the interface cable KPG 22 Connection is the same as in the PC Mode 6 3 Programming 1 Start up the programming software KPG 56D select firmware program in the Program item and press the Return key on your personal computer This starts up the firmware programmer 2 The top screen is displayed Press any key to advance to the next screen 3 Set the communications speed normally 57600 bps and communications port in the Setup item 4 Set the firmware to be updated by File select 1 5 Hold down the LAMP and MON switches on the TK 260G 270G and press the power switch When the LAMP and MON switches are held down for two seconds PROG576 appears on the display and the LED lights orange When PROG576 is displayed release the switches TK 270G only 6 Check the connection between the TK 260G 270G and the personal computer and make sure the TK 260G 270G is in Program mode 7 Press F10 on the personal computer A window opens on the display to indicate the writing progress When the TK 260G 270G begins to receive data the LED lights green 8 When data is received successfully a checksum appears on the display Since the TK 260G does not have a display check the checksum with the FPU KPG 56D TK 260G 270G 10 REALIGNMENT 9 If you want to continue programming other TK 260G 270Gs re
89. output 2 444040 5W 1W Spurious and Harmonics 700 ales 16 11 Narrow SUR e EE 45 Wide 43dB Narrow Audio Less than 5 Frequency Stability AAA Channel Frequency Spread 24MHz KENWOOD CORPORATION 14 6 Dogenzaka 1 chome Shibuya ku Tokyo 150 8501 Japan KENWOOD SERVICE CORPORATION P O BOX 22745 2201 East Dominguez Street Long Beach CA 90801 5745 U S A KENWOOD ELECTRONICS LATIN AMERICA S A P O BOX 55 2791 Piso 6 Plaza Chase Cl 47 y Aquilino de la Guardio Panama Republic of Panama KENWOOD ELECTRONICS CANADA INC 6070 Kestrel Road Mississauga Ontario Canada L5T 1S8 KENWOOD ELECTRONICS DEUTSCHLAND GMBH Rembricker Str 15 63150 Heusenstamm Germany KENWOOD ELECTRONICS BELGIUM Mechelsesteenweg 418 B 1930 Zaventem Belgium KENWOOD ELECTRONICS FRANCE S A 13 Boulevard Ney 75018 Paris France KENWOOD ELECTRONICS U K LIMITED KENWOOD House Dwight Road Watford Herst WD1 8EB United Kingdom KENWOOD ELECTRONICS EUROPE B V Amsterdamseweg 37 1422 AC Uithoorn The Netherlands KENWOOD ELECTRONICS ITALIA S p A Via G Sirtori 7 9 20129 Milano Italy KENWOOD IBERICA S A Bolivia 239 08020 Barcelona Spain KENWOOD ELECTRONICS AUSTRALIA PTY LTD A C N 001 499 074 P O Box 504 8 Figtree Drive
90. p enable Serial data transfer terminal Connected to the microprocessor Synchronizing clock Serial data transfer terminal Connected to the microprocessor Trnsfer data Serial data transfer terminal Connected to the microprocessor UPB1509GV 01 Pin connection diagram Pin No Pin Name BR Ow Pp Applied voltage CLK CLK Cour 502 Functions and uses 2 2 2 5 voltage Power supply voltage pin for the input amplifier section and division circuit Connect a bypass capacitor to this pin to reduce the high frequency impedance with the ground for example 1000 pF Signal input pin Connect a coupling capacitor to this pin for DC cutting with an external circuit for example 1000 pF Input signal bypass pin Connect a bypass capacitor to this pin to reduce the high frequency impedance with the ground for example 1000 pF Ground pin Connect it with the ground pattern The ground pattern on the PC board should be wide enough to minimize impedance ivision ratio setting pin The division ratio can be set by the ollowing voltage Connect a bypass capacitor to this pin to reduce the high frequency impedance with the ground Apply 2 3 the LCD drive bias voltage from outside If
91. peat steps 5 to 8 Notes e To start the Firmware Programmer from KPG 56D the Fpro path must be set up by the KPG 56D Setup This mode cannot be entered if the Firmware Programming mode is set to Disable in the Programming software KPG 56D e When programming the firmware it is recommend to copy the data from the floppy disk to your hard disk before you update the radio firmware Directly copying from the floppy disk to the radio may not work because the access speed is too slow 6 4 Function 1 If you press the MON switch while PROGXXX is displayed the checksum is displayed If you press the MON switch again while the checksum is displayed PROGXXX is redisplayed 2 A transmission speed can be selected by pressing the LAMP switch while PROGXXX is displayed 12900 bps The LED flashes green and red alternately 38400 bps The LED flashes orange 57600 bps The LED lights orange Note Normally write in the high speed mode 7 Clone Mode Programming data can be transferred from one radio to another by connecting them via their SP MIC connectors The operation is as follows the transmit radio is the master and the receive radio is the slave 1 Turn the master TK 270G power ON with the LAMP gt keys held down The TK 270G displays CLONE d 2 Power on the slave TK 260G 270G 3 Connect the cloning cable to the SP MIC connectors on the master and slave 4 Press the O key on the master
92. receive BPF waveform according to the appropriate adjustment item Common Section Measurement Adjustment Specifications Test equipment Terminal Parts Method Remark Item Condition 1 Setting 1 BATT terminal voltage 7 5V 2 SSG Standard modulation Wide MOD 1kHz DEV 3kHz Narrow MOD 1kHz DEV 1 5kHz VCO Panel Test Mode voltage 1 CH Sig 2 1 Power meter 0 8V or more RX 2 CH Sig 3 1 DVM TX 3 CH Sig 2 1 0 8V or more PTT ON 4 CH Sig 3 1 PTT ON Transmitter Section Measurement Adjustment Specifications Test equipment Terminal Parts Method Remark 1 Frequency 1 PTT ON Freq Counter ANT Center frequency Adjust Power meter 162 0 MHz 50Hz Am meter Max Power 1 Adj item HPOW Check 5 2W or more Check Adjust 256 2 Adj item W gt H P O W gt H P O W gt H P O W gt H P O W Adjust 256 PTT ON Hight Power 1 Adj item HPOW Encoder j 0 1W Adjust Adjust knob 2 2A or less 2 Adj item O W gt H P O W gt H P O W gt H P O W gt H P O W Adjust PTT ON Hight Power Panel Test Mode Check 1 CH Sig 1 1 4 0 6 0W PTT ON 2 3A or less 2 CH Sig 2 1 PTT ON 3 CH Sig 3 1 PTT ON Low Power 1 Adj item LPOW Encoder 0 1W Adjust Adjust knob 1 0A or less 2 Adj item L P O W gt L P O W gt L P O W gt L P O W gt L P O W Adjust PTT ON Low Power Panel Test Mode Check 1 CH
93. s key functions as the voice scrambler code selector in the voice scrambler code select mode 2 Display character TK 270G only This key switches the LCD display between the group channel number and group channel name 3 Group up down TK 270G only When the key is pressed each time the group number to be selected is incremented decremented and repeats if held for one second or longer 4 Home Channel TK 270G only Press this key once the channel switches to the pre programmed home channel 5 Key lock TK 270G only When the KEY LOCK switch is held down for one second or more keys other than PTT LAMP MONI VOL POWER and KEY LOCK are locked When 12 16 KEY LOCK is set with the FPU the DTMF key is locked and when front panel KEY LOCK is set the key and the PF key are locked 6 Lamp TK 270G only This key illuminates the LCD and keys on the front panel When the key is pressed the LED lamp goes on When it is released the lamp goes off after about five seconds If any key is pressed while the LED lamp is on the lamp is kept on for five seconds 7 Monitor Used to release signalling or squelch when operating in conventional mode It is also used to reset option signalling 8 Operator Selectable Tone TK 270G K types only This key switches the pre set decode QT DQT and encode QT DQT to OST Operator Selectable Tone tone pair Press this key the transceiver enters OST mode In this mode the
94. stination Ref Address parts Parts No Description Destination R232 RK73GB1J152J R233 R92 1252 05 R234 RK73GB1J124J R235 RK73GB1J334J R237 R92 1252 05 1 5K J 0 OHM 120K 330K 0 OHM PF0314 03 POWER MB15A02 NJM2904V IC APC TA31136FN IC FM IF DETECTOR BUA094BCFV C 8bit SHIFT STORE REGISTER R239 RK73GB1J153J R240 RK73GB1J R241 RK73GB1J R242 R92 1252 R244 RK73GB1J 15 22 330 0 560 5 81350 6 C VOLTAGE REGULATOR PST9140NR RESET SW RN5VL45C REGULATOR 2408 10512 5 8kbit SERIAL EEPROM TA7368F POWER AMP CO CO 29 020 9071 30622M4102GP PU TC35453F AUDIO PROCESSOR TA75WOTFU OP AMP X2 TC75W51FU OP AMP X2 R249 R92 1252 05 R250 RK73GB1J472J R252 253 R92 1252 05 R256 258 R92 1252 05 R259 RK73GB1J473J 00 47 00 00 41K R260 261 RK73GB1J224J R301 R92 0679 05 R302 R92 1252 05 R303 RK73GB1J101J R304 RK73GB 220 00 00 X9C103S TERMINAL VOLTAGE LC73872M DTMF RECEIVER TA75WOTFU OP AMP X2 UPB1509GV CO CO E CH 47 2SC5108 Y 250422624 2SC5108 Y 2504988 25243 R92 1252 05 RK73GB1J222J R92 0670 05 RK73GB1J221J RK73GB1J104J 0 2 2K 0 OHM 220 UMC4 RANSISTOR DTC144EE IGITAL TRANSISTOR 2SK508NV K52 FET 2SC4617 S RANSISTO 2SC4649 N P RANS
95. t A J oss a TX 0V ON WHEN NARROW Bla 3 oy alz 80 81 d H e on oge TRIPLER 5 at m ufo 2 RX 4 8V m oT o NJM2904V 420 DC SW LC75823W_ 835 220 1k al ol d 3 018 ugo 328 919 uio Q17 E 916 E S r TE i LCD DRIVER 532 SE 7 ve sc R61 R223 20 Ehe AJN Ku 594 m 2ND IF W N SW SETS 44 H 338 220 1k ET LAMP ON 5 OV ale 28 g SAVE L 10u 6 3 WHEN WIDE 359 1709 EE RSS e Dr h D GE XOUT 22k TX 5 OV 275 OFF 5 1V e gt 839 i H 5 045 RX 0V 2 di E d 16 SCOR ZOD pg 220e ik Z C100 oy ol D13 14 SW 2ND IF WIDE NARROW oixoixoirzcis 4 6 3 S H gt R72 1 D el ol el j 7 E R59 R62 R68 4 la R523 3 six W 2 av ole RX 5 OV 150k 150k 150k Zem zeen Zem CS BCS E nio 0 5 0 5 0 5 CURRENT DRIVER LCD 3 als RTT PI ETH 9501 59 i 58 E M oit 8 5 8 C107 914 H BACK LIGHT LED AVR A 245 79 Lo EP DC SW a als
96. ta gt lt gt 15 TK 260G 270G DISASSEMBLY FOR REPAIR Separating the case assembly from the chassis 1 Remove the two knobs and three round units 2 Remove the two screws 3 Expand the right and left sides of the bottom of the case assembly lift the chassis and remove it from the case assembly TK 260G 592 stopper TK 270G e 2 0A 92 4 Taking cure not to cut the speaker lead open the chassis and case assembly and pull the speaker lead with connector Separating the chassis from the unit TK 260G 1 Remove the twelve small screws and the three large screws 2 Remove the solder from the antenna terminal using a soldering iron then lift the unit off X57 e TK 270G 1 Remove the three screws Lift the unit X54 and rise up the connecter lever in the arrow with your finger Remove the three hexagonal bosses and remove the twelve screws 2 Remove the solder from the antenna terminal using a soldering iron then lift the unit off X57 TK 270G TK 260G 270G CIRCUIT DESCRIPTION 1 Frequency configuration The receiver utilizes double conversion The first IF is 49 95 MHz and the second IF is 450 kHz The first local oscillator signal is supplied form the PLL circuit The PLL circuit in the transmitter generates the necessary frequencies Fig 1 shows the frequencies A
97. ted about 0 5 seconds 12345678 Display of the current setting If it is 8 or more digits scroll it 987 Display when a code is input Input it with DTMF key Blank LAMP Data clear Busy Channel BCL NO_ Default Lockout Type 1 Bl BCL YES for K type Type 2 Bl2 N A for K type Beat shift No SHFT Default Yes SHFT YES RF Power High Power PWRH _ Default Low Power PWRL Wide Narrow Wide Narrow NARROW Scan DELETE SCAN DEL Not used for TK 260G Delete ADD ADD SCAN ADD Default Priority No Channel Yes P CH_YES_ Not used when Scan Priority is not Fixed Home Channel No HORNO Yes H CH YES Not used when Home Channel is not set in Key Assignment Compander No Yes COMP YES Not used when Wide is selected PTT ID OFF OFF Begin of TX End of TX PID 2 Both 203 Begin of TX ID 000 9999999999999999 Not valid if Dial ID Disable and PTT ID OFF or EOT is set Display when an item is selected about 0 5 seconds 12345678 Display of the current setting If it is 8 or more digits scroll it 987 Display when code 15 input Input it with key Blank LAMP D
98. ttern 1 Pattern 2 2SA1362 GR UPA672T lt Pattern 3 25 4619 wll Pattern 4 B Foil side E Se M68732H 25 1588 DTA114EE DTA144EE DTC114EE gt UJ 5 m O x M N PC BOARD VIEW K 260G 270G TX RX UNIT X57 5870 XX TX RX UNIT X57 5870 XX Foil Side View 0 10 TK260G K M 0 11 TK 270G K 0 21 TK 270G M Foil Side View Address 46 3 4 V amc B Geers __ MT oul ii _ C53 E 6 a ee m e 7 Ls 221 Lente OHE RASI 5 1 8 9 DTA114EE 254988 114 DTA144EE 2 DTC114EE m DTC144EE 2804226 24 i 25 4617 5 25 5108 2SK508NV K52 Component side S 81350HG KD PST9140NR MB15A02 TA31136FN tt E E RN5VL45C 3 228 3 Pattern 4 UMC4 12 Foil side z 3 D 5 4 13 2 a 10 11 12 13 14 47 TK 260G 270G PC BOARD VIEW TX RX UNIT X57 5870 XX Component Side Foil Side View 0 10 TK260G K M 0 11 TK 270G K 0 21 TK 270G M N Em co co T gt 018 5
99. usly transmitted DTMF code Pressing PTT at this time transmits the code that is currently displayed 13 RF power low Used to temporarily switch transmission output to low power Turning the function on enables HiLow LowLow Key states are backed up except in the PC mode when they are reset 14 Scan TK 270G only Pressing this key starts scanning Pressing this key again stops scanning 15 Scan Del Add TK 270G only This key switches the currently displayed channel between Delete and Add The Add channel is contained in the scan sequence the Delete channel is not contained In the scan mode this key switches the channel between delete or add temporarily 16 Talk Around TK 270G only Press this key the transceiver uses the receive frequency and tone for transmission The operator can call the other party directly without repeater Press this key again the talk around function goes off 17 None An error operation beep sounds and no action will occur Use this function when the transceiver is required to be operated more simply 3 Display TK 270G only ZA PR 4 CALL SCN LO A Not used in this transceiver Appears when the selected channel is busy Appears when QT DQT DTFM or 2 Tone decoding is deactivated by pressing the Monitor key Appears when you receive a Code Squelch Selective Call 2 Tone or DTMF Signallling call Also appears when you transmit usi
100. ut after power switch AUX3 Board control TXAFI Modulation output from board AUX2 Board control AUX6 Board control AUX1 Board control 5 Board control AUX4 Board control TXAFO Modulation input to board 5C 5V RXAFO Received signal input to board NC NC RXAFI Received signal output from board NC NC ALTTONE ALART TONE output form board NC NC NC NC NC NC GND GND 8 CONTROL SYSTEM Keys and channel selector circuit The signal from the keys and channel selector are directly input to the microprocessor as shown in fig 10 Channel selector TK 260G 1 TK 270G 1 1 Fig 10 Control system SEMICONDUCTOR DATA LCD Driver LC75823W Display UNIT 1 501 TK 270G only Block diagram COM1 COM2 COM3 GER GULE Ss 51 COMMON DRIVER LATCH amp DRIVER SHIFT REGISTER a CLOCK GENERATOR ADDRESS DETECTOR D CL VooVSs Pin function Name Function 81 852 Segment output for displaying data transferred form serial data COM1 COM3 Common drive output Frame frequency fo fosc 384 Hz VDD The display to turn off INH INT L Turn off INT H Turn on TK 260G 270G CIRCUIT DESCRIPTION SEMICONDUCTOR DATA Active Function Oscillation terminal H Chi
101. ut sounds according to the squelch results 2 2 TONE High speed data Part of the received AF signal output from the AF amplifier 1C16 2 2 and then passes through an audio processor 1 14 goes to the other AF amplifier IC15 1 2 is compared and ther goes to IC13 IC13 checks whether 2 TONE data is necessary If it matches IC13 carries out a specified operation such as turning the speaker on See Fig 4 FM IF 1 4 IF AMP LEE 1 16 2 2 IF DET 43 18 15 2 2 AF AMP 1 11 030 AF PA Sw 6 1 15 1 2 COMPARATER 2 TONE IC18 DTMF DECODE Fig 4 AF Amplifier and Squelch 5 5 gt EXPANDER 3 DTMF High speed data The input signal from the IF 4 is amplified by 1C16 2 2 and goes to IC 18 decoder The decoded information is then processed by the CPU During transmission and standby the IC is set to the power down mode when the PD terminal is High When the line is busy the PD terminal becomes Low the power down mode is canceled and decoding is carried out 3 PLL frequency synthesizer The PLL circuit generates the first local oscillator signal for reception and the signal for transmission 1 PLL The frequency step of the PLL circuit is 5 or 6 25 2 16 8MHz reference oscillator signal
102. while the master displays CLONE The data of the master is sent to the slave While the slave is receiving the data PC is displayed When cloning of data is completed the master displays END and the slave automatically oprates in the User mode The slave can then be operated by the same program as the master 5 The other slave can be continuously cloned When the 0 key on the master is pressed while the master displays END and the slave the master displays CLONE Carry out the operation in steps 2 to 4 Note You can clone the programmed data between the tramsceiver listed below Frequency version must be same Slave TK 260G TK 260G TK 760G TK 760G K M K M TK 270G TK 270G TK 762G TK 762G Master m x x x x Cloning cable parts E30 3410 05 TK 270G TK 260G 270G PTT RXD PPPS 1 REMOTE TXD MBL PSB GND PTT RXD ME MIC 8 E 4 7 Cloning cable Fig 2 TK 260G 270G REALIGNMENT 8 Self Programming Mode TK 270G only Write mode for frequency data and signalling etc Mainly j ini i X57 587X used by the person maintaining the user equipment 2 8 1 programming
103. witch PTT T07 0335 05 Loudspeaker 191 0564 08 Condenser MIC 61 TK 260G 270G SPECIFICATION General Frequency Range 150 174MHz Number of channels AAA Max 8 TK 260G Max 128 TK 270G Number of groups e Max 128 TK 270G Channel Spacing es etie etis 25kHz 30kHz Wide 12 5kHz 15kHz Narrow PEE e rer ius 2 5kHz 5kHz 6 25kHz 7 5kHz Operating Voltage 2 7 5 VDC Battery uite aee dein More than 8 hours 5 watts 5 5 90 duty cycle with KNB 15A battery Operating Temperature renge 30 C to 60 C 22 F to 140 F Dimensions and Weight With KNB 14 7 2V 600 battery 58 2 5 16 W x 135 5 5 16 H x 32 1 1 4 D mm in 400g 0 88lbs With KNB 15A 7 2V 1100mAh battery 58 2 5 16 W x 135 5 5 16 H x 35 1 3 8 D mm in 440g 0 9713 Receiver Measurements made per EIA standard EIA RS316B Sensitivity EIA 120B SINAD n eR 0 25uV Wide 0 28uV Narrow SeleGliVIly EE 70dB Wide 65dB Narrow lIntermodulatlon trt etie reet 65dB Wide 60dB Narrow Spurious 65dB Audio Power e ehh 500mW Frequency Stability AAA Channel Frequency Spread 24MHz Transmitter Measurements made per EIA standard EIA RS 3168 RF Power
104. witch then speak into the microphone to call a station SP MIC jacks Side 1 key Connect an Press to optional speaker activate its microphone here programmable E The transceiver is ide 2 k shown with the optional KNB 14 activate its battery pack programmable function Programmable Auxiliary Functions Side 1 key and Side 2 key can each be programmed with one of the following auxiliary functions Monitor A Monitor Unmute Momentary Press and hold the Monitor key to hear background noise Release the key to return to normal operation Monitor B Monitor Unmute Toggle Momentarily press the Monitor key to hear background noise Press the key again to return to normal operation Monitor C Carrier Squelch Momentary Press and hold the Monitor key to deactivate QT DQT 2 Tone or DTMF signalling Release the key to return to normal operation Monitor D Carrier Squelch Toggle Momentarily press the Monitor key to deactivate QT DQT 2 Tone or DTMF signalling Press the key again to return to normal operation None No function RF Power Lo Press the RF Power Lo key to toggle the output power of a channel between high and low This can only be used for channels that have been programmed with high power Pressing RF Power Lo while using a channel programmed with low power causes an error tone to sound When changing a channel from high to low pow
105. witching This isa mode for making channel settings with the panel 100 0000 81000000 The rightmost dot indicates keys without using the FPU 550 0000MHz 50Hz digit On 5 Off 0 Rx Signaling OFF Off QT DQT switching Pressing MON when SELF is displayed sets Channel 0787025038 670 Mode switching Setting Mode EIA Mode 2503 Normal Inverse Select an item set using gt then change the selection with QT 67 0 250 3H2 67 0 switching the encoder 0 192 Step Mode 250 3 The data displayed using Lal is stored in the memory and DOT 000 777 Normal DQTOOON then proceeds to the next item Pressing gt proceeds to 1 Step Mode DQT7TIN 23 754 Normal DQTO23N the next item without storing it in the memory Press MON to set the display to SELF and return to reset dard Tatie Mode DQT7S4AN default stat Inverse DOT 000 ERC status oe 023 754 Inverse DQTO231 dard Table Mode DOT AAA TK 260G 270G 12 Function TX frequency Choices Step 2 5kHz 1MHz Display STP_250 STP_1000 Blank REALIGNMENT Remarks Same as RX frequency 100 0000 550 0000MHz T 100 0000 TX Signaling Same as RX signaling Option Signaling OFF NONE _ Default DIMF DIMF 2 TONE ID 000 9999999999 WD Display when an item is selec

Grundig 19 VLC 2000 T CRT Television User Manual

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