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TOMAHAWK 245

1. DIMMER CONT POWER INDICATOR T DTC114EU e 9 R86 R3 R4 R1 R2 ES mies 7 NC 22k RS R5 a 235 558 PSs 228 0 7 5 10K 10K 10K SZ o CC POW IND 52 R11 212 R92 25 1 BLAU 777 1 O xc R14 4 NC Q9 2SA1036K 2 5 le 6 DIC144EU 330 Aa 205082301117100 R13 6 8K tiu ass NC e 1518 8 25 id 777 6 lt O R18 ES Low 6 Low R20 NC WW R17 R19 4 7 0 8 9 qe 8 6 O rt 58 6 518 p 050 6 NC 77 5 osx E R23 95 ag b E TX indicat DTZ5 1B o ANN 5 3 5 R10 indicator 4 5 ANN R28 1K CN2 m R31 IK SSTB
2. 9 s 10KB one R82 10K R46 HsJ2013 01 120 NC 5 1K 08 LCD1 4 5 YU ELO249 jm HS Os q 29 24LC32AT 99 ag DTC144EU n n 8 RE1 05 De RZ D11 06 05 RB E TD pl LI A ib T p 980415 nt 5 2 sm FR1111C 111 56 E 160 1111 3 FR1111C m 1111 56 bus 0000152 0000152 0000152 0000152 0000152 0000152 mes NC i m 8 2 cua aw R9 sor eo RZ 1K 22 a a 108K SS ES Ge 01 DTC114EUL Uus DTC114YU 250 R48 gt 4706 1 PC S R86 R85 5 Li 2x 4 7K 5 rs Ee CN1 gt 4 Ow 205082501117108 oS 1 205088501117102 100 eu SEA em M38267M8L EO biho real Tea 05 1 914465 2 9 E A a her eL 5
3. EXPLODED VIEW 1 Top and Front View 0050 DP0137A 19 2 Bottom View 0050 50075 3 LCD Assembly CPU BOARD FM0034 NUT UE0035 FF0017 x ST0068 UT TL0023 DG0037 TL0024 EL0049 ST0064 21 22 PARTS LIST CPU L Description Parts Name 99 Parts No Description Parts Name 9c ES si 9 CU3043 CU3043 CU3101 50049 CU3014 CU3014 CU3035 CS0372 CU3035 CU3111 CU3101 CU3047 CU3035 CU3047 CU3035 CU3035 CU3035 o hip tantalum hip C hip C hip C hip C hip C hip C Chip C Chip Chip C Chip C Connector 0000000000 hip Diode hip LED hip Diode hip Diode CPU Jack LCD Chip Transisi Chip Transisi Chip Transistor Chip Transisi Chip Transisi hip Transisi hip Transisi hip Transisi hip Transisi hip Transistor Chip Transistor Chip Transistor Chip R Chip R Chip R Chip R Chip R Chip R Chip R 0 hip hip R hip R B1C104KT N B1C104KT N B1E153KT NS B1E153KT NS B1C104KT N C1608CH1H101JT AS C1608
4. ANT Q101 R101 K101 R102 R327 DTC114EU I J 3 47V MJ82 1 39KF 75 825 0182 218 DTC114EU 1 4 955 R328 pie SV 787 105 150 BR fe 793 sla 228 S Cg 188 505 gts a 278 77 2504081 S POE OFF 2 288 ES ra 5 i 0139 51 55 SCRON L 25 4 81 Sex 7 ALFYM455G ea 5 I R zix IF FILTER LA 1 al CICSS DCS LPF FL102 gl sis 55 6255 53 Es IC104 C IC104 8 560K XF101 XF102 R
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7. 11 51 B cc L3 L2 C2 C1 L1 V SEMICONDUCTOR DATA 1 M5218FP XA0068 Dual Low Noise Operational Amplifiers Output 1 1 Inverting Input 1 2 CJ Non Inverting Input 1 3 C 6 Power supply Minus 4 E 15 2 NJM7808FA XA0102 8V Voltage Regulator Pin Assignment 1 OUTPUT 2 COMMON 3 INPUT 3 TC4S66F XA0115 Bilateral Switch Power Supply Plus Output 2 Inverting Input 2 Non Inverting Input 2 4 TK10930VTL XA0223 Narrow Band FM IF IC IF IN 10 7MHz RSSI OUT 4 7K AF OUTPUT AM COMP OUT NOISE AMP OUTPUT NOISE AMP INPUT AM LOW CUT AM AF OUT FM AF OUT AF OUTPUT FM 10 245MHz OSC B AM IF INPUT 7BRE 7437Z 0 1uF Parameter Supply voltage Power dissipation Storage temperature Operating temperature Operating voltage Operating frequency fop Ta 25 C Vcc 3V No signal AM ON No signal AM OFF Parameter Symbol Min Typical Supply Current 1 lcc1 lcc2 M M Supply Current 2 Mixer Coversion Gain Mixer Input Impedance ER lt gt NM ma av sos EHI 2 EA EA v Limiting Sensitivity Limit Output Voltage 2222222 74 Vin 0mV RS 68kQ v Vin 0 01mV RS 68k0 Distortion THD1 Output Impedance Filte
8. Jm 1 Ls nm a DTCi14EU 2222 2s Ps x 5 011450 109 5 IC4 EE 5 am pa S MD mn ee uu 5 845 1 i7 v NEL N M e 018 4 Ol x MN 5 5 89 e e Sis Y de te la 5 p E 5 E 3 Su amp DTC114EU Gg 4 5 pe a I 5 100 05 1006 Sieh 04 cmm ik E ae SP eo act Wesz Re 10K xS gt 118 015 EI R6 oz e 2 SG 8 2K 17012 x 10K EE ER c 47K 5 E 5 5 R91 C4 R12 R11 Riog SHE 5 10K 9 047 sa Fes 2 015 4 7K TH 3 lo Z 55 8 SED 10 NC 1 y Es 5 RS ca Re R1 E 1 2 1 r 1 r 1 R67 1 100 160 470 31 4 MAIN Unit Side UP 0414 3 MAIN Unit Side A UP 0414 VCO Unit Side A 6551 1 888 0 68 VCO Unit Side 0 R519 JK101 Mus ih 500034 JP102 p 9 gt gt 101 Solder gt 20151 520 00000000
9. nex 531 5 5 C277 ro 855 PLL SYNTHESIZER E m RES 5 1 158 hN h x 1800 16V 59 559 Su 22S L Ls 5 4 97 g i 8 1450 ore ary 2 5 831 075 SIS H 2 20167 Hi 0503 0528 R519 10P 8 x7 01 114 0 C286 DTC114El Sls 1 es 0220P R296 R297 4 4V 5 4 D So E 0504 TX 2 7V R CN104 NS 2 n E 1 9 022 PES d al 47 s di ah ULOV C294 5 15 x ug P 1504 3 aye e LE Sle 8 1 0 Ls Ss 8 IK 8 ple F als 4 28 8 5 0 001 b 1 1 525 1 5 8 5 5 sx 5 1 lt 29 2 8 5 o o UAQ 37Y a a Sz 2 1 1 AA Se al gs 9 028 5 AT LJ 2h 529 22 98765252521 C514 SER 8 8 5 100K xi 2 512 IC50 6 1 7 0V 2 2 2 2 9 9 o 1 m yo DCS LEVEL ADJ OCS MODAN es Yo l AAA R503 82s 52x 25 5 8 52 eye 4 9V 110 66 55 4 4 1 la 095 ESA RX 3 1V TX 6 7V ot CH1 On y 6515 TX 5V 3 T R311 1K 5 5 DAT ze 7p 30 AUDIO 10117 JK102 3 C301 agb RII Kg 511 0501 AT LA4425 0400242 25 4215 5 RX 5V 5 8315 7 sre 201 275 6 1 2 345 C303 i mE e 8
10. 25 4099 XT0096 DTC114YU XU0029 1SV214 XD0131 25 1736 XT0099 2564215 XT0124 QY XL0069 MA742 0 2581132 XT0061 0 c od BCE 28564245 XT0125 0 NN E FA1111C XL0077 16 LCD Connection TTR3626UPFDHN SEG EG32 EG31 EG30 EG29 EG28 EG27 EG26 EG25 EG24 EG23 EG22 e DAS 1SV268 XD0301 2SB1292F XT0112 35 1845 0013 UMC3 XU0047 E2 B2 1 I 12 02 2 DA204U XD0130 2502954 XT0084 DTA114YU XU0112 215 XU0178 82 E 1 C2 C1 EG6 EG5 EG4 EG3 EG2 1 DAN235U XD0246 25K880GR XE0021 G E XG S D 25 3356 0030 DTC114EU XU0131 C E
11. signal is outputted from the pin 41 C5C of CPU and drives ON the power supply switch control Q8 and Q7 which turns the 5VS ON 5VS turns ON the PLL 1C501 main power supply switch Q127 and Q122 AF POWER IC117 and the 8 V of AVR IC115 During reception pin 29 R5 of CPU outputs H level Q124 is ON and the reception circuits supplied by 8 V While during transmission pin 28 T5 of CPU outputs L level which is reverse by Q11 so that the output in Q128 will be level Q123 is ON and the transmission circuit is supplied by 8 V Or in the case when the condition of PLL is UNLOCK H level is outputted from pin 14 of IC501 UNLOCK switch Q129 is ON transmission switch Q128 is OFF which makes the transmission to stop 1 ACC External Power Supply Terminal When optional power supply cord DEC 37 etc is connected to the external power supply terminal JK101 with ACC power supply ON switch Q101 will turn ON 5 V of AVR IC101 pin 2 STB becomes L which makes C5V to turn ON With this it can turn the power supply of the radio ON 6 M3826M8L270GP XA0819 CPU 50 gt P14 SEG38 49 lt P15 SEG39 32 P7O INTO 20039 914 19 9903918 29 SED3S L1d gt 29 v 53S 0Ld vs 53S 40d ss 26935 904 95 15935 60 gt 25 0 D38 v0d 89 6293 504 gt 69 8Z93S Z0d gt 09 4203S 10d lt gt 19 9203S 00d gt 29 96039 28
12. TSQ agx 10K zm SSS 7 2 5 232 0 5 77 pi 235 8 1 572 579 0000157 24LC32AT D CALL 5 8 vueo1sz NO 77 OZ EN J 3 6864MHz 64 soL R65 R64 eges Sw7 77 Wy R70 9000157 M 100 gt 4 7K 268 5 2 1V A MIC CONNECTOR 2 ome __ 8585 18K R72 10K 8 96 98 35 cog 77 DTC114YU C20 2 Q7 330 N gt 5 O O 0 047 321 SR Oo o 8 001 108 R63 6 nts 1 00 9 9165 R87 5V SWITCH gts 100 S 5 5 777 5 o HT 77 77 77 33 2 MAIN Unit EXT POWER CONTROL
13. lt lt lt lt lt lt lt gt lt gt lt lt lt lt lt lt lt lt lt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt lt lt lt lt lt gt gt gt gt gt gt gt L Parts No Description Parts Name Description Parts Name 96 E side DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDADDDDDADDDDDDDADADDDADADDDDADDDADDAADDAD MCRO3EZPFX3902 MCRO3EZPFX3902 MCRO3EZHJ103 MCRO3EZHJ151 MCRO3EZHJ560 MCRO3EZHJ101 MCRO3EZHJ103 MCRO3EZHJO0O MCRO3EZHJ101 MCRO3EZHJ182 MCRO3EZHJ272 MCRO3EZHJ102 MCRO3EZHJ564 MCRO3EZHJ101 MCRO3EZHJ153 MCRO3EZHJ392 MCRO3EZHJ124 MCRO3EZHJ563 MCRO3EZHJ823 MCRO3EZHJ393 MCRO3EZHJ681 MCRO3EZHJ683 MCRO3EZHJ103 MCRO3EZHJ683 MCRO3EZHJ823 MCRO3EZHJ472 MCRO3EZHJ821 MCRO3EZHJ273 MCRO3EZHJ153 MCRO3EZHJ103 MCRO3EZHJ274 MCRO3EZHJ563 MCRO3EZHJ103 MCRO3EZHJ684 MCRO3EZHJ154 MCRO3EZHJ103 MCRO3EZHJ222 MCRO3EZHJ103 MCRO3EZHJ104 MCRO3EZHJ103 MCROSEZHJO00 MCRO3EZHJ103 MCRO3EZHJ153 MCRO3EZHJ471 MCRO3EZHJ104 MCRO3EZHJ101 MCRO3EZHJ104 MCRO3EZHJ104 MCRO3EZHJ560 MCRO3EZHJ100 MCRO3EZHJ100 MCRO3EZHJ105 MCRO3EZHJ153 MCRO3EZHJ223 MCRO3EZHJ104 MCRO3EZHJ104 MCRO3EZHJ101 MCRO3EZHJ471 MCRO3EZHJ103 MCRO3EZHJOOO MCRO3EZHJ222 MCRO3EZHJ104 MCRO3EZHJ105 MCRO3EZHJ563 MCRO3EZHJ474 MCRO3EZHJ101 MCRO3EZHJ102 MCRO3EZHJ102 MCRO3EZHJ223 MCRO3EZHJ272 MCRO3EZHJ474 MCRO3EZHJ102
14. 47SWB T Chip C1608JB1C104KT N Electrolytic 16 10SWB TS Chip tantalum TMCSA1C105MTR Chip C C1608JB1H102KT AS Electrolytic 16 10SWB TS Chip C C1608JB1H102KT AS Chip C C1608JB1C104KT N CS0220 Chip tantalum TMCMA1C225MTR CU3035 Chip C1608JB1H102KT AS CU3035 Chip C1608JB1H102KT AS 0 0 0 0 Ci Cl 0 0 0 5 ee ee eae eee gt gt SSS SSS SSS gt 5 2 2 gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt 000000000 CU3007 hip C C1608CH1HO60CT A CU3035 hip C C1608JB1H102KT AS CU3035 hip C C1608JB1H102KT AS CU3047 hip C C1608JB1H103KT N CU3035 hip C C1608JB1H102KT AS CE0339 ectrolytic 16 10SWB TS CU3018 hip C C1608CH1H390JT AS CU3047 hip C C1608JB1H103KT N CE0343 ectrolytic 16 1000HC T CU3035 hip C C1608JB1H102KT AS CU3019 hip C C1608CH1H470JT AS CU3027 hip C C1608CH1H221JT AS CU3011 hip C C1608CH1H100DT AS CU3035 hip C C1608JB1H102KT AS CU3035 hip C C1608JB1H102KT AS CU3015 hip C C1608CH1H220JT AS CU4011 hip C GRM42 100D500PT CU3023 hip C C1608CH1H101JT AS CU3023 hip C C1608CH1H101JT AS CU3023 hip C C1608CH1H101JT AS CU3047 hip C C1608JB1H103KT N CU3111 hip C C1608JB1C104KT N CU3047 hip C C1608JB1H103KT N
15. L116 L115 L114 L113 C204 C203 C202 C216 and C215 and tuning circuit L105 L104 and D105 D104 and amplified by the RF amplifier Q107 The signal from Q107 is then passed through the tuning circuit L103 L107 L102 and varicaps D103 D107 and D102 and converted into 30 85 MHz by the mixer Q106 The tuning circuit which consists of L105 L104 varicaps D105 and D104 L103 L107 L102 varicaps D103 D107 and D102 is controlled by the tracking voltage form the VCO The local signal from the VCO is passed through the buffer Q112 and supplied to the source of the mixer Q106 The radio uses the lower side of the superheterodyne system The mixer mixes the received signal with the local signal to obtain the sum of and difference between them The crystal filter XF102 XF101 selects 30 85 MHz frequency from the results and eliminates the signals of the unwanted frequencies The first IF amplifier Q105 then amplifies the signal of the selected frequency After the signal is amplified by the first IF amplifier Q105 it is input to pin 24 of the demodulator IC IC 108 The second local signal of 30 395 MHz which is oscillated by the internal oscillation circuit in IC108 and crystal X104 is input through pin 1 of 16108 Then these two signals are mixed by the internal mixer in IC108 and the result is converted into the second IF signal with a frequency of 455 kHz The second IF signal is output from pin 3 of IC108 to the cer
16. L88MSO5TLL 0675 17 15 Transistor Diode and LED Ontline Drawings 18 16 LCD Connection TTR3626UPFDHN 18 EXPLODED VIEW 1 Top and Front 19 2 Bottom VIOW eter tees 20 3 LCD Assembly 21 PARTS LIST antes td 22 23 Main Unit 23 26 ttti ets 26 Mechanical Parts 26 Speakers unio o ttt eif imet agere 27 Packing Parts ciem etd t 27 ADJUSTMENT 1 Adjustment 2 28 2 VCO and RX Adjustment Specification 29 3 Tx Adjustment Specification 29 4 Rx Test 30 5 Tx Test Specification 30 PC BOARD VIEW 1 CPU Unit Side A UP 0414 31 2 CPU Unit Side UP 0414 esses 31 3 Main Unit Side UP 0414 32 4 Main Unit Side UP 0414 32 SCHEMATIC DIAGRAM T CPU Unit ere tete et 33 2 Main 34 BLOCK DIAGRAM 35 ALINCO INC SPECIFICATIONS 1 2 3 GENERAL Frequency range Operating mode Frequency resolution Memory
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18. P26 v N 0 5 5 5 5 5 n i P25 C5 P24 AIR m N r U N A U N A P17 P16 P15 SEG39 P14 SEG38 S P13 SEG37 D P12 SEG36 DUD AJA S S S S S W6 W5 WA W3 W2 Wi o 28 2 21 No PinName Description 58 __ SCR fif 3 5 54 1065684 UP 11 gt Actviow_ 6 57 1 8 0 5 5 ojpojojojo D D D D O COIN 5 mi P03 SEG29 Poz SEG28 28 P01 SEG27 27 3 3 3 2 2 2 P00 SEG26 2 2 2 2 2 2 2 2 1 0 9 8 7 P37 SEG25 P36 SEG24 P35 SEG23 P34 SEG22 P33 SEG21 P32 SEG20 P31 SEG19 P30 SEG18 SEG17 SEG16 3 2 1 LCD segment signal SEG15 SEG14 SEG13 SEG12 SEG10 SEG9 5608 SEG7 SEG6 5 5 SEG3 SEG2 5 5 5 s2 51 so EA SEGA 54 9 8 y 6 SEG5 5 4 3 2 1 0 SEGO V Vref Avss CPU power terminal A LCD power supply LCD power supply lt D EA
19. 590 052 MCLR ANE OL 42x ANN TN scr SER x 559 R30 R Q 1K BP2 DUD 5 DUD 777 6 NAW 6 pesw_ DATO DA 8 R33 TOUT 8 gt 5 R34 7 855 pur c1 sac 5 500 BEEP amp BELL SOUND 5 6 4 15K sc M38267M8L270GP 0 5 R36 C2 R37 R38 gt 5 5 S ANN C4 LAMA 1857 e 100K 1 E DTC114EU 8 2K adis 10K 9 015 115 GND 9 VR1 m R32 nx 91 y MUTE 10KB R76_Q18 ON p 205082301117100 VOLUME 3 3K 476 1 114 JK1 1 m HSJ2013 01 120 2 as SCR IN R41 C6 79 E x Wi DATA R44 100 160p QUEE rp e 20 00 CLONE 8 R45 C3 1K BEEP 104 oh Ab 0 0047 10K 0 1 SEC REI 847 050 e NC il 1K DOWN 58 ae ee ee a ee a 4 R79 3 5 5 E C WN gt 35 Ze ol el glelalal s 5 0 5 R50 as 59 sss 42 08848856882 wr 155355 m o8 E E 470K X a 5 m E SET Pes 3 452 5 E 5 amp 8 AL A 1 272 9 5 gt zb 28 5 E 8 5055 Y FUNC gt o ey SW2 777 Lal 00 25 pa fas 0000157 T R54 R52 2 553 ofa R55 64 SED 9 2 100K ww 77 R59 LG 1 7 ols 10K ON o MHz 315 1 5 5 R57 220 sw4 77 415 MY E 26 A 04 UU00157 2 gt
20. 8 glo 6 1 5n Tec 5 feces elel BTSs s Exa 9 m CN106 484 _ og gin 470 1 258 88 4l PI22A82M 34 BLOCK DIAGRAM 106 IO 2 500 51 0 79 ON 5 9 1929M o g l 1 gt 2 5 e 722 gt 99094 20 9 15002 1260792 cM gt z 5 viva a 0 EE WONd33 5 1 490 t 1605881 gt 10121 nao p AS 7 520301 gt 11 lt 808 5 vol y SS 9OLUA 13539 5 JEGMOL 5 NIVO Ec Y 4995921 1809252 1852 20 5215 4 ASO 9 p SONY Size 100 AS Alano Z VY LLO MS xi ES mum any gt 009 1809252 82 82 uo 201 2110 1510 VIVO cog 5 1NOO MS 33MOd MOL BAV MS SL T SL 99109 ZELLESZ 208 0 95 1982 NEL Suo neo 5210 gt racal
21. MAIN VR 101 MAIN VR102 3 Tx Adjustment Specification CONDITION UNIT ADJ SPOT 245 50MHz SSG20dBu 1KHz 1 5KHz DEV S Meter Adjustment Adjust so that all the indicator appears ITEM ADJUSTING METHOD HI POWER Adjustment MID POWER Adjustment LOW POWER Confirmation Maximum Deviation Adjustment Mic Gain Adjustment CTCSS Modulation Level Confirmation DCS Modulation Level Confirmation DTMF Modulation Level Confirmation CH41 245 50MHz MID POWER CH41 245 50MHz LOW POWER CH41 245 50MHz MOD 1KHz40mVemf CH41 245 50MHz MOD 1KHz4mVemf WIDE CH41 245 50MHz 88 5Hz CH41 245 50MHz 255 Code CH41 245 50MHz Press the V M key during TX MAIN MAIN CH41 245 50MHz MAIN VR103 HI POWER VR104 VR107 VR 106 VR108 Adjust to 10 0 1 0W Adjust to 5 0 1 0W Confirm if it becomes 2 5 1 0W 2 310 1KHz DEV 1 5 0 1KHz DEV 500 200Hz DEV 3KHz LPF ON 500 100Hz DEV 3KHz LPF ON 1 5 0 5KHz DEV 29 4 RxTest Specification TEST ITEM CONDITION ADJ STANDARD SPECIFICATION NOTE RX Sensitivity CH5 245 05MHz Less than 8dBu Less than 7dBu 12dBSINAD CH41 245 50MHz CH77 245 95MHz RX Di i Less than 4 Less 5 SSG Output 30dBu CH41 245 50MHz passam SSG Output 30dBu More than 34dB ess than 03 2 OFF Squelch CH5 245 50MHz Squelch Open Squelch Open SSG Output 10dBu Sensitivity Indication 02 Squelch C
22. Supply Voltage 13 8 V Output of SSG is all EMF indication SSG output is MOD 1KHz 1 5KHz DEV Standard Modulation is also based above Speaker load is 80 and Output is 50 100 mV J 98 vR107 5 a O 5 PE 9 0 vRia6 VR108 e H H 102 CN103 Attention Don t set the variable resistor into its open position 28 2 VCO and RX Adjustment Specification ITEM CONDITION UNIT ADJ SPOT MAIN TC101 Adjustment CH1 245 00MHz Frequency TX VCO CH1 245 00MHz MAIN L503 Adjustment RX VCO CH1 245 00MHz MAIN Confirmation RX CH41 245 50MHz L105 L104 L103 L107 L102 ADJUSTING METHOD Adjust so that Tx Frequency becomes within 245 00MHz 100Hz Adjust so that PD voltage becomes 3 1V Confirm if PD voltage becomes less than 7 2V Rx Signal Sensitivity Repeatedly adjust so that the Rx Sensitivity becomes in maximum Adjustment Confirm CH5 245 05MHz CH41 245 50MHz CH77 245 95MHz At 8dBu SINAD more than 12dB At 8dBu SINAD more than 12dB At 8dBu SINAD more than 12dB CH41 245 50MHz SSG OFF Indication 01 Squelch Adjustment Adjust so that the squelch stops at perfectly close location
23. channel Antenna impedance Microphone impedance Rated voltage Ground Current Receive Transmit Operating temperature Frequency stability Dimensions Weight TRANSMITTER Output power Modulation system Maximum frequency deviation Spurious emission RECEIVER Sensitivity Receiver circuitry Intermediate frequency Squelch sensitivity Adjacent channel selectivity Spurious and image rejection ratio Audio output power CH1 245 000MHz CH80 245 9875MHz 8K50F3E 12 5 kHz 100 channels 1 call channel 500 unbalanced 2 13 8V DC 15 11 7 to 15 8V Negative ground 0 6A Max 0 4A Squelched or less 5 0A or less 10 C 60 C 14 F 140 F 5 ppm 142 W x 40 H x 174 D mm 5 58 W x 1 57 x 6 83 D Approx 1 0kg 35 3oz High 10W Mid 5W Low 2 5W Variable reactance frequency modulation 2 5KHz 600B or less 0 2 uV for 12dB SINAD 0 4 uV for 20dBNQL Double conversion superheterodyne 1st 30 85MHz 2 455kHz 16dBu 60dB 700 2 0W 80 10 THD Note spesifications are subject to change without notice or obligation CIRCUIT DESCRIPTION TOMAHAWK 245 1 Receiver System The receiver system is a double superheterodyne system with a 30 85 MHz first IF and a 455 kHz second IF 1 Front End 2 IF Circuit 3 Demodulator Circuit 4 Audio Circuit The received signal at any frequency in the 245 00MHz to 245 9875MHz range is passed through the low pass filter
24. to the varicap of the VCO unit for oscillation frequency control A Colpitts oscillation circuit driven by Q503 directly oscillates the desired fre quency The frequency control voltage determined in the CPU IC1 and PLL circuit is input to the varicaps D503 and D504 This change the oscillation frequency which is amplified by the VCO buffer Q504 and output from the VCO area 4 CPU and Peripheral Circuits 1 LCD Display Circuit The CPU turns ON the LCD via segment and common terminals with 1 4 the duty and 1 3 the bias at the frame frequency is 64Hz 2 Dimmer Circuit 3 Reset and Backup The dimmer circuit makes the output of pin 13 of CPU IC1 into H level at set mode so that Q9 and Q3 will turn ON to make the lamp control resistor R84 short and make its illumination bright But on the other hand if the dimmer circuit makes pin 13 into L level Q9 and will turn OFF R84 s illumination will become dimmer as its hang on voltage falls down in the working LED D11 D2 D5 D3 and D6 When the power form the DC cable increases from Circuits 0 V to 2 5 or more level reset signal is output form the reset IC 1C4 to pin 33 of the CPU IC1 causing the CPU to reset The reset signal however waits at 100 and does not enter the CPU until the CPU clock X1 has stabilized 4 S Signal Meter Circuit 5 DTMF Encoder 6 Tone Encoder 7 DCS Encoder The DC potential of pin 16 of IC 106 is inpu
25. 0 4 6939 998 gt gt lid QXu vvd LX19S 9vd LAQUS Zrd OWMd 0Sd 0819 28 1 p lt 0H1NO vSd DUC M38267M8L 270 GP 203S S d LYLNO SSd 0609 96 gt byd osd 1203S E8d 584 06039 6066 gt ONV ZNIS 09d 6103S 1 d gt INV ELNOS 19d 81O3S 0 d NV LOW1OS c9d 11038 gt 91038 gt 9 935 gt 719035 SNV S9d 9NV 99d 21935 gt 4NV 49d FS fa E ES EE ES c 5 5 5 25 8888 gt 2 9 gn ee No PinName Function Logic Descripion __ sw I AD Smetermpat _ Fz reus sa 1 AD Noise level input Fs reus 1 votage input 4 1 0 jCTCSStoneinpu DCScodeinput s 60606206 Ser i 3 Fe 66000006 Bez mw eeusoursmw o Activ nion 205 signal mue 00660 1 P60 SIN2 ANO RE2 Activ low PS7 ADT DA2_ TO D A DA CITE TN PSSCNTRI Pulse Serial clock tor Be S PSURTP Lamp dimmer HILOW switch PSDIRTPO Activ low Microphone mut
26. 00000000000000 gt U gt 0U gt gt gt 00000000000U0000000000000000000 gt gt 0000000 Description Parts Name Parts No Description Parts Name Loc si RK3050 MCROSEZHJ103 C1608CH1H220JT AS RK3054 ip R MCROSEZHJ223 C1608CH1H470JT AS RK3050 ip R MCRO3EZHJ103 1608 1 010 5 RK3058 ip R MCRO3EZHJ473 IC1608JB1H102KT AS RK3058 ip R 2 73 16MV 10SWB TS RK3050 ipR 2 103 IC1608JB1H102KT AS RK3032 ip R MCRO3EZHJ331 IC1608JB1H102KT AS RK3001 ip R MCRO3EZHJO00 IC1608CH1H120JT AS UR0015 Di RH90N74E20 A90770 C1608JB1H103KT N 0000152 Swi EVQPPXA25 IC1608JB1H102KT AS 0000152 Swi EVQPPXA25 IC1608CH1H150JT AS UU0015Z Swi EVQPPXA25 1608 1 390 5 0000157 1 EVQPPXA25 16 10SWB TS 0000152 Switch EVQPPXA25 hip C C1608JB1C104KT N 0000157 Switch EVQPPXA25 hip C C1608JB1H102KT AS 0000152 Switch EVQPPXA25 hip C C1608JB1C104KT N 0035 Variable EVUF2JFK4B14 hip C C1608JB1C104KT N XQ0131 Xtal CSA310 3 6864MHz hip C IC1608CH1H221JT AS DG0037 LCD LIGHT DR135 hip C 1608 1 010 5 FG0305 LCD RUB CONNECT 135 hip C C1608JB1C104KT N 0034 MIC GND PLATE hip C IC1608JB1H102KT AS FP0034 MIC SPACER DR110 hip C IC1608JB1H331KT AS 570064 LCD HOLDER DR135 hip C IC1608JB1C104KT N 570068 DIAL FITTING DR135 hip C IC1608CH1H010CT AS TL0023 REFLECTION DR135 hip C C1608CH1H180JT AS TL0024 DIFFUSION SHEET 135 hip C C1608JB1C104KT
27. 00K s 5 gt 5 DRIVER 9 981 vi v2 OU amp Su 2 YOUNGER AMP 1 32 C189 L112 22 33 35580 5 10 0 1 0 5 228835 0115 i 8 NOISE 2 4V 251238 5 9652 9 D110 1113 1114 5 S ES 235 106 4 295 3 8 873 455 3 a wu QKASSE 3 E 1 E 2 278 Q 407 ko SQ CON 15P 5 o 5 5 C197 4 R204 82 185 15 1 909 87 8 E 5 o o NFS ses 8 8 775 MIC GAIN 513 858 5 2 amp 2 2 95 45 o oTs ST Bag Box i FSO TS 25 7 10111 8 3 555 Sea 85 5 HE 5 CN102 1 D 222 ZSD 10104 D 58 818 6 Xs 3 C217 NJM2902V 7 f R211 2581292 ms 5 x 152 51 L MIC MUTEJON R261 ale oa 8 2 o Ix 103 T ie x F 2 ass xo GL 4 Yi 300 S TX POWER DET 22K S 2 SIX E ro 64 NH XS Low 8 VE Al 52 818 8 5 VSS B 5 P ES 7 7 85 CONT 0 7 86 REIS 2 8T 81 L AF OUT ui R210 R275 ET Su R222 0118 uc STB H SQL ON sac oT gt TX 4 1V TK 2541576 6 R223 0117 1 22 m c s 5V 100 ode 1 2504081 5 30 mVp p 0114 R1B0 C232 268 5 978 Mics E 6 001 5 ols Sts MID POWER ADJ 105082311717100 m EIS 0117 215 5 9 RX 3 5V No EMI 155355 51 82 IDC MIC MU
28. 128 68K C118 7916 5 NJM2902V d i IF AMP DE s R125 p 39 8509 R152 8 a 3 7 122 1187 L103 5 C128 6 Bly 15 AE 1P 949155 QA0155 0187 8 E NC R132 4 76 me 8 8133 1 1 4 2 m 9 6 21V gt lt a 22 16 8 5 144 Bee Ji 820 Q106 gt NT 2 274 lip 2504099 q 3561845 E QA0155 5 5 4 0695 C165 8168 TT El 538 14M 5 s n 5 j 1 amp Sai lan lt i gServo 22K 915 1st IF 858 A sess 558 156 02 925 470 es 1 1987654321 259 51131 ls 328 060 qes 7 1 br 323 2 9 108 TK10930V Axl A SAG 5 Cri 4EU ols 1 STs a 227 2 52 2 2162 8174 R164 C158 5 Se sd db preti x R165 3 4 5 6 7 8 9 0 1 34 C159 il muere S wie 8 8 E ERER 0 001 476 10 15 SAR PT EIS T aps DCS LPF ON s i 8 m 39 PD LINE BU 2 10K 3 R264 1K E 825 2 5 ES VARI CAP TUNING 0125 ox 215 18 i 25K880GR 582 pu ye A amp E pM 5 La R269 o 100K R225 S METER ADJ BOK _ MIC MUTE 61 3 Riog 51 C183 2 C179 R195 470K TT 2041 8192 100 SsxoTs POWER MODULE 1 il NW 8 0 001 1 e f 0 5V 2 2V cse R218 22K pe l SS 58 373 0108 lt 2 M68729 Ta DA204U 5 0 081 33K vR102 1
29. 15T1R5M J102 hip inductor LERO15T1R5M J102 hip inductor LERO15TR47M J222 hip inductor MLF1608DR10K T J123 hip Transistor 2SC4215 Y TE85L J103 2SK508K52 T2B J104 28C4215 Y TE85L J104 R MCRO3EZHJA70 MCRO3EZHJ221 MCRO3EZHJO0O MCRO3EZHJ682 MCROSEZHJ183 MCROSEZHJ222 MCROSEZHJ101 MCROSEZHJ471 MCROSEZHJ223 MCRO3EZHJ332 MCROSEZHJ470 MCROSEZHJ103 MCROSEZHJ683 MCRO3EZHJ221 MCROSEZHJ470 MCRO3EZHJ392 MCROSEZHJ101 MCROSEZHJ471 MCROSEZHJ103 J000 PFX7502 hip R 222 Trimmer CTZ3S 10A W1 P hermistor NTCCM16084BH682KCT Trimmer Pot MVR22HXBRN473 Trimmer Pot MVR22HXBRN104 Trimmer Pot MVR22HXBRN103 Trimmer Pot MVR22HXBRN223 Trimmer Pot MVR22HXBRN473 Trimmer Pot MVR22HXBRN472 Trimmer Pot MVR22HXBRN104 22BH1 020 H1 CDBM455C7 12 8MHZ 5PPM UM5 IUM 530 395MHZ UM1 30 85MHZ 30M7 GND SPRING DR130 VCO CASE DR235 SILICON DUMPER SHEET gt gt gt gt gt gt lt lt lt lt lt lt 1 lt gt lt lt gt lt gt lt lt lt lt lt lt lt gt lt lt lt lt lt lt gt gt gt gt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt 279 2 2222022200 PCB DR245 0050 XSC26 6FZ 0006 B2 6 8 Fe Ni AWO001 XYN3 J8FN AZ0042 Washer DP0137 LCD panel DR235A FF0015 BLIND CLOTH DR110 FF0017 BLIND CLOTH DR5
30. 70 608JB1H222KT A FG0273 ON AIR KEY RUBBER 608JB1 20 SP cushion MCMA1C225MTR 0151 REAR PANEL DR135 MCMA1C225MTR KS0075 BOTTOM CASE DR235A 608JB1H102KT KZ0130 FRONT ASSY DR235A MCSA1V104MT NK0072 VOL KNOB DR135 608JB1H103KT NK0073 DIAL KNOB DR135 608JB1H103KT SP0008 GND TERM XM601 608CH1H070C 550096 CHASSIS R 5 5 5 hip hip hip tantalum hip tantalum hip C hip tantalum hip hip C hip C hip hip hip C hip C hip C hip C hip tantalum hip hip 330 0 30 608JB1H102KT 10065 HOLDER DR135 570066 FITTING DR135 TG0034 HIMERON DR135 UE0258 Connector FM M D R 4 YZ0131 Tape 9110 12X1mm 608CH1H050C 608JB1H102KT 608JB1H102KT 608CH1H020CT 608JB1H102KT MCMB1A226MTR 608CH1H030CT AS 608CH1H221JT AS 000000000 Y 0000000000000 00 000 lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt 5 50017 UX1047 Speaker Wire Power Cable 057M9017 WIRE DR130 Model Name Plate FGBO 125V 15A Microphone BRACKET DR130 SPANNER DR130 Item Carton DR245 5PCS Protection Bag 5x90x170 Protection Bag 5x125x250 Protection Bag 5x200x250 FRONT DR605 Fixture Fixture Registration Card Schematic Diagram Security Seal T INSTRUCTION DR135TA SERIAL NO FOR CARTON R B2 0X3M RECEPT 15A Spesker Spesker DVanapampyaaf 27 ADJUSTMENT 1 Adjustment Spot Power
31. 8 Fax 069 789 60766 http www alinco de Dealer Distributor Copyright 2000 Alinco Inc Osaka Japan Printed in Japan 0063
32. CE0342 16 470HC TS CU3051 hip C1608JB1E223KT NS CU3023 hip C C1608CH1H101JT AS CU3035 hip C C1608JB1H102KT AS CS0237 hip tantalum TMCMA1A475MT CS0237 hip tantalum TMCMA1A475MT CS0220 hip tantalum 1 225 CU3035 Chip C C1608JB1H102KT AS 102 0 0397 Connector 10 5082 3110 17 100 CN103 UE0397 Connector 10 5082 3110 17 100 UA0037Y Cable DC CABLE UA0037 UE0043 Connector PI22A02M XD0112 Chip Diode 1SV128 TE85L XD0131 Chip Diode 15 214 TPH4 XD0131 Chip Diode 1SV214 TPH4 XD0131 Chip Diode 1SV214 XD0131 Chip Diode 15 214 TPH4 Transistor DTC114EUA T106 Transistor 25C4245 Y TE85L Transistor 25C2954 T1 istor 25 1292 Transistor 25C4081 T106R Transistor 25A1576A T106R Transistor 1215 Transistor 2541736 TE12R Transistor 25B1132T 1000 Transistor 2SK880GR TE85L Transistor DTC114EUA T106 Transistor 25C4081 T106R Transistor DTC114EUA T106 Transistor DTC144EUA T106 Transistor 25C3356T1BR24 25 Transistor DTC114EUA T106 Transistor DTC114EUA T106 Transistor 25C4081 T106R Transistor 25C4081 T106R MCRO3EZHJ103 4 4 lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt gt gt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt
33. CH1H101JT AS C1608JB1H472KT NS C1608JB1C104KT N C1608JB1H472KT NS C1608JB1H472KT NS C1608JB1C473KT NS TMCSA1C105MTR C1608CH1H180JT AS C1608CH1H180JT AS C1608JB1H102KT AS TMCMB1C106MTR B1H102KT AS C1608JB1C104KT N C473KT NS H103KT N H102KT AS H103KT N H102KT AS H H 102KT AS 102KT AS H102KT AS 20 5082 3010 17 100 20 5082 3010 17 100 FM214 8SMPY FA1111C TR FA1111C TR CDE RANK FA1111C TR CDE RANK FA1111C TR FA1111C TR CDE RANK FA1111C TR CDE RANK 155355 TE17 FA1111C TR CDE RANK UDZSTE 17 5 1B MA729 TX M38267M8L270GP 24LC32AT I SN S 80845ALMP EA9 T2 HSJ2013 01 120 TTR3626 UPTDHN DTC114YUA T106 DTC114EUA T106 25 1036 T146Q DTC114EUA T106 DTC114EUA T106 2504081 T106R 2SB1132T 100Q DTC114YUA T106 DTC144EUA T106 DTC114EUA T106 DTA114YUA T106 DTA114YUA T106 MCRO3EZHJ223 000 MCRO3EZHJ223 MCRO3EZHJ103 MCROSEZHJ103 MCRO3EZHJ560 MCRO3EZHJ560 MCROSEZHJ102 MCRO3EZHJ331 MCRO3EZHJ472 lt lt lt lt lt TIU lt lt lt lt lt gt gt lt gt lt RK3048 3001 3001 3062 3046 3030 3038 3064 3050 3050 3050 3050 3038 3038 3038 3038 3044 3034 3047 3052 3062 3049 3050 3058 3062 3026 3050 3050 3026 3050 3038 3038 3038 3070 3038 3038 3062 3050 3074 3050 3066 3034 3026
34. N C1608JB1H102KT AS C1608 B1H102KT AS Main Unit ip C C1608JB1H102KT AS i TMCSA1V224MTR 1H150JT AS 102KT AS 102KT AS 1H100DT AS 1C333KT NS 6X7R102K500PT 100DT AS 1HO80CT A H1H150JT AS ectrolytic 16 10SWB TS ectrolytic 16 10SWB TS hip C C1608JB1H102KT AS Chip C GRM42 6CH100D500PT Chip C GRM42 6CH150J500PT Chip C GRM42 6CH150J500PT Chip C GRM42 6CH070D500PT hip C C1608JB1H102KT AS ectrolytic 16 10SWB TS hip C 010CT AS hip C 010 5 102 5 hip 020 5 hip 020 5 ectrolytic 5 102 5 hip 150 500 150 500 hip 223 5 hip C1608JB1E223KT NS hip C C1608JB1H102KT AS hip C C1608JB1H102KT AS hip C C1608JB1H103KT N hip C C1608JB1H102KT AS ectrolytic 16 22UW hip C C1608CH1H101JT AS hip C C1608JB1H102KT AS hip C C1608JB1H102KT AS hip tantalum TMCSA1C105MTR hip C C1608JB1H102KT AS hip C C1608JB1C473KT NS hip C C1608JB1H102KT AS hip C C1608JB1H102KT AS 00000000000000000 lt Cc T T gt lt lt lt lt lt gt lt lt eee lt lt Bee C1608JB1H103KT N C1608JB1H103KT TMCSA1C105MTR C1608JB1H103KT TMCMBO0J476MTR C1608JB1E223KT NS C1608JB1C104KT C1608JB1H103KT 1 106 C1608JB1H103KT C1608JB1H103KT C1608JB1H103KT C1608JB1H103K
35. PC circuit Q118 Q117 Q116 then it controls the APC voltage supplied to the younger amplifier 0115 and the final power module to fix the transmission power 3 PLL Synthesizer Circuit 1 PLL The dividing ratio is obtained by sending data from the CPU IC1 to pin 2 and sending clock pulses to pin 3 of the PLL IC 10501 The oscillated signal from the VCO is amplified by the buffer A504 and Q501 and input to pin 15 of IC501 Each programmable divider in IC501 divides the frequency of the input signal by N according to the frequency data to generate a comparison frequency of 5 or 6 25 kHz 2 Reference Frequency Circuit The reference frequency appropriate for the channel steps is obtained by dividing the 12 8 MHz reference oscillation X103 by 2048 according to the data from the CPU IC1 When the resulting frequency is 6 25 kHz channel steps of 12 5 KHz are used 3 Phase Comparator Circuit The PLL 10501 uses the reference frequency 6 25kHz The phase comparator in the IC501 compares the phase of the frequency from the VCO with that of the comparison frequency 6 25 kHz which is obtained by the internal divider 1 4 PLL Loop Filter Circuit 5 VCO Circuit If a phase difference is found in the phase comparison between the reference frequency and VCO output frequency the charge pump output pin 13 of IC501 generates a pulse signal which is converted to DC voltage by the PLL loop filter and input
36. RK3034 RK3074 RK3050 RK3026 RK3046 RK3026 RK3050 RK3026 RK3050 RK3046 RK3062 RK3072 RK3050 RK3032 RK3026 RK3046 RK3034 RK3028 RK3001 RK3038 RK3038 RK3050 RK3038 RK0008 RK3046 07919900 0 0 90 9 99 9 90 0 9 9 99 99 00 900Q0000 0 090900090909 MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ 682 000 000 104 472 221 102 154 103 103 MCROSEZHJ103 MCROSEZHJ MCROSEZHJ MCROSEZHJ MCROSEZHJ MCROSEZHJ MCROSEZHJ 103 102 102 102 102 332 MCRO3EZHJ471 MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZH MCRO3EZH MCRO3EZH MCRO3EZH MCRO3EZH MCRO3EZH MCRO3EZH MCRO3EZH MCRO3EZH MCRO3EZH MCRO3EZH MCRO3EZH MCRO3EZH MCRO3EZH MCRO3EZH MCRO3EZH MCRO3EZH MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ MCRO3EZHJ 562 153 104 822 103 473 104 101 103 103 101 103 102 102 102 474 102 102 104 103 105 103 224 471 101 471 105 103 101 472 101 103 101 103 472 104 684 103 331 101 472 471 151 000 102 102 103 102 ERJ6GEYJ330V MCRO3EZHJ 472 WU gt gt U000v0 gt 000 gt gt 0
37. SEZH MCROSEZH MCROSEZH ERJeGEYJ ERJeGEYJ MCROSEZ MCROSEZ MCROSEZ MCROSEZ ERJ12YJ2 ERJ12YJ1 MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ ERJ12YJ47 MCROSEZH MCROSEZH MCROSEZH ERJ12YJ10 MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ ERJ12YJ4 MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ MCROSEZ 2252552525559 SS Sc 55 225 5 5 55 2 lt lt lt lt lt lt lt lt gt lt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt lt lt gt gt gt gt gt lt gt gt gt gt lt lt lt lt lt gt gt lt lt lt lt lt lt lt lt lt gt gt gt 25 Description Parts Name oc Description Parts Name Loc side HJ182 1608 1 060 J103 C1608CH1HOR5CT AS J102 C1608CH1H080CT A 221 C1608CH1H020CT AS J103 C1608JB1H102KT AS 392 C1608JB1H102KT AS 472 C1608CH1H100DT AS 100 B8P BC 2 J102 B6P BC 2 000 15214 TPH4 J103 1SV262TPH2 J153 1SV262TPH2 J155 M64076GP J155 hip inductor LERO15T1R5M J103 oil 4VP 5 25T J102 hip inductor LERO
38. T C1608JB1H103KT C1608JB1E153KT NS C1608JB1E223KT NS C1608CH1H680JT AS 1608 1 020 5 1608 1 010 5 C1608CH1H150JT AS C1608JB1H272KT NS C1608JB1H562KT NS C1608JB1H182KT AS C1608JB1H332KT NS C1608JB1C104KT N TMCMA1C225MTR C1608CH1H221JT AS 1608 1 020 5 C1608JB1H392KT NS C1608JB1H562KT NS C1608CH1H220JT AS TMCSA1C105MTR C1608CH1H180JT AS C1608CH1H180JT AS C1608JB1C104KT N C1608JB1C104KT N C1608JB1C104KT N 1608 1 080 1608 1 020 5 Electrolytic 16 10SWB TS H H lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt 0 0 0 0 0 O 0 0 0 0 0 0 Parts No Description Parts Name Loc Qty Description Parts Name side MA742 TX 1 214 4 DA204U T106 1SV268 TD MI407 MA742 TX MA742 TX 155355 7 DAN235UT 106 155355 TE17 155355 TE17 DA204U T106 155355
39. TE SW 3 3 Edo Rage 6 9 D 325 BTS S C229 0 047 oan 10K 10113 8 5 Sle g s B zs s AW T TCAWS3FU 7 295 100 2 C242 C241 82P 325909 5 4H VCO OUT AM CN103 i 25 57015 6 3p oz 8R 23 2 0 022 R244 asx 5 7 2 PD ssre Six 330K gl C246 8 1 6 op 42 0 0047 JE C188 ser oL E 2 8253 R254 R252 C245 R246 0 s o 8255 39K 39k 470K they AIK 2 001 POW SW ow 1 3 RX 8V 8R NAT 1 5 4 7K 1 V C115 VR 0122 at R256 NJM780BA BV 2541736 E 1 80 1 15 87 Sys M5218A 3 5 sur AAA 0123 2 c Slola Y E 25811327 H4 SIS R266 sac 6 4 7 6 si 9 5 13 1 Pos R262 C253 TONE IN 6 OTR 5 2 5 10K svs T P v F 9 55 jJ E E 0124 8 ATOR ov 61 R272 dens 9 1 171 1 d 9 5 Y 10508231 9126 1 EN E 5 cnse2 0127 DTC114EU 10k 2 ge 5 0119 2 4 81 DCS ON H 215 5 1 8 1 el 250408 8 5 3 155355 1 267 22 3 1 8 m Soy PD 2 2 OUT gt 82 c 8 8C 3 129 8 2 ds s RSX 012 Bex LOOP FILTER 5 55 ol l 4 1014460 8 5 2 0121 ess E 227197 38 C524 EN 8j The a 8 6
40. TE17 155355 TE17 DSA3A1 15 214 4 Ceramic Filter ALFYM455G L88MSO5TLL TL NJM2902V TE1 TK10930VTL TC4S66F TE85R M68729 BU4052BCF E2 AN8010M E1 TC4W53FU TE12 M5218AFP 600E NJM7808FA LA4425A MJ82 1 LGY6501 0600 NL322522T 2R2J 3 E544ENAS 110251 E544ENAS 110251 E544ENAS 110251 E544ENAS 110251 ip inductor NL322522T 033JA 1 E544ENAS 110251 MR3 0 3 5T 0 8 MR3 0 2 5T 0 6 MR3 0 3 5T 0 8 MR3 0 3 5T 0 8 MR3 0 3 5T 0 8 MR3 0 3 5T 0 8 hip inductor 1 322522 033 oi MR3 0 9 5T 0 6 hip inductor NL322522T 033JA ip Transistor DTC114EUA T106 Transistor DTC114EUA T106 Transistor 25C4099 T106N CU3035 CU3011 CU3035 CU3003 CU3035 50049 50049 CU3022 CU3051 CE0339 CE0339 50049 CU3043 CU3111 CU3047 CU3038 CU3026 CE0339 CU3008 CU3111 CU3111 CE0364 CU3111 CE0339 50049 CU3035 CE0339 CU3035 CU3111 Chip C C1608JB1H102KT A Chip C C1608CH1 pees Chip C C1608JB1H102KT AS Chip C 1608 1 020 5 Chip C1608JB1H102KT AS Chip tantalum TMCSA1C105MTR Chip tantalum TMCSA1C105MTR Chip C C1608CH1H820JT AS Chip C C1608JB1E223KT NS Electrolytic 16 10SWB TS Electrolytic 16 10SWB TS Chip tantalum TMCSA1C105MTR Chip C C1608JB1H472KT NS Chip C C1608JB1C104KT N Chip C C1608JB1H103KT N Chip C C1608JB1H182KT AS Chip C C1608CH1H181JT AS Electrolytic 16 10SWB TS Chip C C1608CH1H070CT A Chip C C1608JB1C104 Chip C 1608 1 104 Electrolytic 16
41. TOMAHAWK 245 Service Manual DR 245A CONTENTS SPECIFICATIONS GENERAL ete abere 2 2 TRANSMILETTER Rte Rs 2 2 CIRCUIT DESCRIPTION DR 135 1 Receiver System 3 4 2 Transmitter System 4 3 PLL Synthesizer 5 6 4 CPU and Peripheral Circuits 6 7 5 Power Supply Circuit 7 6 M3826M8L270GP 0819 8 10 SEMICONDUCTOR DATA 1 5218 068 11 2 NJM7808FA 102 11 3 TC4S66F 0115 11 4 TK10930VTL 0223 12 5 BU4052BF 0236 13 6 TC4W53FU XA0348 13 7 M64076GP 0352 14 8 LA4425A 0 410 15 9 M68729 0591 15 10 AN8010M XA0119 16 11 NJM2902 596 16 12 24LC32A XA0604 17 13 S 80845ALMP EA9 T2 0620 17 14
42. amic filter FL102 where the unwanted frequency band of that signal is eliminated and the resulting signal is sent back to the IC108 through pins 5 The second IF signal input via pin 5 is demodulated by the internal limiter amplifier and quadrature detection circuit in 108 and output as an audio signal through pin 12 The audio signal from pin 12 of 108 is amplified by the audio amplifier IC104 A and switched by the signal switch IC IC111 and then input it to the de emphasis circuit and is compensated to the audio frequency characteristics in the de emphasis circuit R203 R207 R213 R209 C191 C218 C217 and amplified by the AF amplifier IC104 D The signal is then input to volume The adjusted signal is sent to the audio power amplifier 10117 through pin 1 to drive the speaker 5 Squelch Circuit 2 Transmitter System 1 Modulator Circuit The detected output which is outputted from the pin 12 of IC108 is inputted to pin 19 of IC108 after it was been amplified by IC104 A and it is outputted from pin 20 after the noise component was been eliminated from the composed band pass filter in the built in amplifier of the IC then the signal is rectified by D106 to convert into DC component The adjusted voltage level at VR101 is delivered to the comparator of the CPU The voltage is led to pin 2 of CPU and compared with the setting voltage The squelch will open if the input voltage is lower than the setting v
43. e TXH Secury alarm SW SCRH clc UJ 42 4 P aja R O 5 4 MU CLK E P51 PWM3 Pulse Serial clock output for 11 P50 PWMO Pulse Serial data output fr PLLAGIPLL unlock signal input HUD P47 SROY1 P46 SCLK1 P45 TXD P44 RXD 21 43 9 TOUT P421 NT2 P41 INT1 DAT T alo NJO E 8 UJ ActivlowPulse 5 E E ES E EX ES 5 Pulse Pulse Pulse Activ low Activ high Activ low Activ high Activiow Pulse AAA e Activ tow Activ high Activiow Ed TU ES E ES E ES EEN B B X RTX BEE R P T E 5 1 70 T T T T AX 4 513 P72 000000000000 Activ low Backup signal detection input Activ low Reset input 5 5 U Y E P70 INTO RESET Xcin RESE Xcin i Main clock input Main clock output CPU GND Activ low Pulse Serial data for EEPROM Activ high Activ high Activ high Aciviow Activ low Key sws CAL Activ low Kersus MON o JKeysu2M _ Activ low Mie down input Aw gt lt c Xcout Xin Xout T R C B X o Vss GND P27
44. in RF INPUT 1st DC SUPPLY 2 2nd DC SUPPLY PO RF OUTPUT GND FIN 10 ANS010M XA0119 Voltage Regulator Test Circuit Output Common Input AN8010M 11 NJM2902 XA0596 Quad Operational Amplifiers Pin Assignment Top View 1 AOUTPUT 8 0 OUTPUT 2 A INPUT 9 C INPUT 3 A INPUT 10 C INPUT 4 V 11 GND 5 B INPUT 12 D INPUT 6 B INPUT 13 D INPUT 7 BOUTPUT 14 D OUTPUT 12 241 2 0604 CMOS Serial EEPROM PDIP AOL 1 bx Function N 1042 User Configurable Chip Selects A20 8 Ground veta gt Serial Address Data I O Serial Clock Write Protect Input 2 5V 6 0V Power Supply 13 S 80845ALMP EA9 T2 XA0620 Voltage Detector Vin 18V pe SSCS lout 100mA NC Lot number GND Vin Vout 14 L88MSO5TLL XA0675 5V Voltage Regulator With On Off Function Pin Assignment VIN 1 VIN M 8 2 STB 5 8 E 3 GND 5 Aa DEDI 5 VOUT 9 4 12345 GND 2OSTB 1 17 15 Transistor Diode and LED Outline Drawings Top View RLS 73 XD0363 DTZ5 1B XD 0165 25 1036 XT0110 C o B BR B E DTC144EUA XU0148 0 El 155355 XD0254 a DSASAI XD0131 2SA1576 XT0094
45. lose Squelch Close SSG Output OFF S Meter CH41 245 50MHz All appears at All appears at Decrease SSG level and 20dBu 25dBu decrease S Meter level AF Output CH41 245 50MHz More than 2W More than 2W SSG Output 30 dBu CTCSS CH41 245 50MHz Open at Open at SSG Output OdBu Sensitivity tone 88 5Hz 250Hz DEV 250Hz DEV 88 52 DCS CH41 245 50MHz Opens when test Opens when test 255 code Sensitivity tone 255 Equipment is in Equipment is in Tx Tx CH41 245 50MHz Less than 0 654 Less than 0 65 MAX VR Power Off Current 641 245 50MHz Less than 10mA Less than 10mA Power Off Howling CH41 245 50MHz Don t occur Don t occur SSG Output 60dBu MOD OFF MAX VR 5 TxTest Specification TEST ITEM CONDITION ADJ STANDARD SPECIFICATION NOTE TX Output 245 00MHz 10x1W HI POWER CH41 245 50MHz 10 1 CH80 245 9875MHz TX Output 41 245 50MHz 5 1W 512W MID POWER TX Output CH41 245 50MHz 2 5 1W 2 4 Low Power Less iman sA LessWanGA Deviation Spurious 245 00MHz More than 65dB More than 60dB CH41 245 50MHz More than 65dB More than 60dB CH80 459 9875MHz More than 65dB More than 65dB Modulation CH41 245 50 1 5 0 1KHz DEV 1 5 0 2KHz DEV MIC IN 4mVemf Level 2 3 0 1KHz DEV 2 3 0 2KHz DEV MIC IN 40mVemf CTCSS CH41 245 50MHz 500 200Hz DEV 500 300Hz DEV 88 5Hz Modulation level 3KHz LPF ON DCS Modulation 41 245 50 2 500 100Hz DEV 500 200H
46. oltage During open squelch pin 30 SQC of the CPU becomes L level AF control signal is being controlled and sounds is outputted from the speaker The audio signal is converted to an electrical signal by the microphone and input it to the microphone amplifier Q6 Amplified signal which passes through mic mute control IC 109 is adjusted to an appropriate mic volume by means of mic gain adjust VR106 IC114 AandB consists of two operational amplifiers one amplifier pins 1 2 and 3 is composed of pre emphasis and IDC circuits and the other pins 5 6 and 7 is composed of a splatter filter The maximum frequency deviation is obtained by VR107 and input to the cathode of the varicap of the VCO to change the electric capacity in the oscillation circuit This produces the frequency modulation 2 Power Amplifier Circuit 3 APC Circuit The transmitted signal is oscillated by the VCO amplified by the drive amplifier IC112 and younger amplifier Q115 and input to the final power module IC110 The signal is then amplified by the final power module 110 and led to the antenna switch D110 and low pass filter L113 L114 L115 L116 C215 C216 C202 C203 and C204 where unwanted high harmonic waves are reduced as needed and the resulting signal is supplied to the antenna Part of the transmission power from the low pass filter is detected by D111 and D112 converted to DC The detection voltage is passed through the A
47. programmable divider 8 Data latch 17bit E D 6bit Vin 20 4dBm 520 MHz Vcc 2 7 5 5V Vec 2 7 5 5V Vxin 0 4 1 4Vp p Vcc 2 7 5 5V Fxin 10 25MHz Sine wave compar gt lt voltage LPF TR circuit r 8 LA4425A XA0410 5W Audio Power Amplifiers Test Circuit 5 2 2 Input 13 2 RL 40 Po 5W Gain 45dB 123 4 5 9 M68729 XA0591 220 246MHz 30W RF Power Module ABSOLUTE MAXIMUM RATING TC 25 C 52 Rating Symbol Ratings E E Supply volt V 17 5 5 upply voltage o o 0 M68729 Total current lec 10 c c iL 12 3 4 Input power Pin max 600 Output Power Po max 40 Operation case temperature Tc op 30 to 110 STR Strage temperature Tstg 40 to 110 5 9 Sal Zg Zl 50w Eso OI TE 97 wa L 5 2 a 2 2 2020 ic g os O ELECTRICAL CHARACTERISTICS Limits Block Diagram Symbol Parameter Test conditions Unit Min f Frequency range 220 246 MHz Po Output power 30 Ww h 7 1 2 12 5V Total efficiency Pin 40 210 2nd harmonic 78 21 501 30 dBc 3fo 3rd harmonic 30 dBc rin Input VSWR 3 001 2 15 2V 30W Pin Controlled No degradati Load VSWR tolerahee je VSWR 20 1 Al 28 50 O P
48. r Gain e o SH SL Squelch Hysteresis Hys S meter Output Voltage 50 S meter Output Voltage 0 05 Scan Control Hi Voltage lt N lt 0 K p Q Scan Control Low Voltage m a Q V V V V V V S meter Output Voltage S2 IET S meter Output Voltage S3 S meter Output Voltage S5 fic T required input level to get Output Voltage voz 120 30 num mee 20 wes ose ee soe pur e 12 5 BU4052BF XA0236 Analog Multiplexer Demultiplexer Logic Diagram o LEVEL o conve Binary TO 1014 RTER DECODER WITH INHIBIT L L L H Dor 6 TC4W53FU XA0348 Multiplexer Demultiplexer Function Table COMMON VDD Control input ON channel cho ch1 Don t Care A 14 7 M64076GP XA0352 Dual PLL Synthesizer XBo SI CPS RST Fini Locki Pat 1 Data latch 17bit E Local 2 Wi programmable divider a gt o 1 64 5 2 modules prescaler 1 64 65 2 modulus prescaler 21 bit shift resistor 21 bit pulse counter Symbol Min Typ Fin 80 520MHz Vcc Vin 10dBm EEES Fin 80 520MHz Fin Data latch 16bit Data latch 16bit ii Iren
49. t to pin 1 of the CPU converted from an analog to a digital signal and displayed as the S meter signal on the LCD The CPU IC1 is equipped with an internal DTMF encoder The DTMF signal is output from pin 10 through R35 R34 and R261 for level adjustment and then through the microphone amplifier IC114 A and is sent to the varicap of the VCO for modulation At the same time the monitoring tone passes through the AF circuit and is output form the speaker The CPU IC1 is equipped with an internal tone encoder The tone signal 67 0 to 250 3 Hz is output from pin 9 of the CPU to the varicap D503 and D504 of the VCO for modulation The CPU IC1 is equipped with an internal DCS code encoder The code 023 to 754 is output from pin 9 of the CPU to the varicap D124 of the PLL reference oscillator When DCS is ON DCS MUTE circuit Q126 ON Q133 ON Q132 OFF works The modulation activates in X103 side only CTCSS DCS Decoder The voice band of the AF output signal from pin 1 of IC104 A is cut by sharp active filter 104 and C VCVS and amplified then led to pin 4 of CPU The input signal is compared with the programmed tone frequency code in the CPU The squelch will open when they match During DCS Q108 is ON C156 is working and cut off frequency is lowered 5 Power Supply Circuit When power supply is ON there is a L signal being inputted to pin 39 PSW of CPU which enables the CPU to work Then
50. yes 2 En Ig 2 asa TI n 8 L118 Reza ied 09 j cs 8 NS T cio M AE u 8 1 0113 mois 0117 5 O d E epee H I fg VRIUS 5 5 m 51 8 mum Ee s D 124 8245 0118 jun E 458 1107 5 208 i e 5 A 3 cesi F pues 5 Jan 7 C265 f XA Etes A 7u 8 5 5 0 LI 8 amp fgg e 2 Da E 3g cua E 8 1 cesT 0 10198 5 VCO Unit gt mr C168 1 R116 129 i 1 ED cesa E 7 0105 cies s 84 Rug SAN x101 12171 C187 ED R195 dab pg a8P 455 He x 1 109 CN105 0155051 Are 8145 R128 AA AAA AA A 1 111 1 o Td cse 32 SCHMATIC DIAGRAM 1 CPU Unit
51. z DEV Code 255 Level 3KHz LPF ON DTMF Modulation CH41 245 50MHz 5 1 5 0 5 Presss the V M key Level KHz DEV KHz DEV during TX Modulation Distortion TX S N Less than 3 Less than 4 More than 35dB More than 33dB 0 3 3KHz BPF ON PC BOARD VIEW 1 CPU Unit Side A UP 0414 2 CPU Unit Side B UP 0414 SW7 2

TOMAHAWK 245

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