Yaesu FT-100 undocumented
Contents
1. seiner stesse se 42 UP DOWN BAND SWITCHING 43 V U MESFET PRE AMP 5 066 etes esse e esi enses eese nenas 43 MABSUCONTACTS eter e erect E pee dece e ecce eee 44 Menu settings overview Nr Function Default Opt 1 Opt 2 Opt Opt 4 Opt 3 5 1 Dial Pulse tuningrate 20 100 200 2 Beep keyandbuttons on joFF 3 ScanMode scanrestat tnE StoP buSy tinE 4 Speed dwellime 1005 10 fioo 5 Eo cpu 311 seconds a seconds 7 DCSCode 104 codes 23 23 74 8 DCS normal or invert tn rn tn rn tn rr tr rn tr rr ENC DEC 9 ARTSBeep beepmode ALL jrAng 10 CWID jenable disable on Itb upteschr 12 Tonefreg 39tones 85 67 254 13 Dimmerset 63dimmest oFF oFF 63 14 PeakHold 5sechld joFF 15 Scope sweepmode loFF SgL oFF n E ce cut cut only 17 DSP NR Vedueton level S T 16 _ 18 __ 6000 1000 j6000 19 DSPHPF 10 fioo j1000 T 20 Width DSPCWifilter 20 60 10 2590 21 powr 10 0 foo 22 50M TXPO2. 25 MEMORY PROGRAMMING 11 004022 4000000000000000000000000000 26 MIG ADAPTER iste ER e RENE 27 ZEHN nsi euh LAM Ld eU ar D IUE e LATI 28 MICROPHONE 22 2 042 20001000000000000000000000000000 0 29 MODIFICATION FOR OUT OF BAND TRANSMISSION 06 0000 2 1 29 OUTPUT POWER MEASURED AND OUT OF 31 POWER CONNECTORS LINE 8 12 14121 12 2 0000000010000000000000 34 PSK31 SSTV ETC SOUNDCARD INTERFACE WITH THE 00 2222222 34 PROBLEMS WITH 100 5 37 REPEATER ORFSETS rs na sungen 37 RE EXPOSURE Men m c siue 37 TRANSMIT PROBLEMS ON 80 160 0200 200000000000000000000000500000000 seen nea 38 S METER ANOMALIES usa lese EE ATE Te eer 38 SATELLITE OPERATIONS 22 2 4102 0 00000000000000000000000000400000000 tenens sane seen enean 40 SEPARATION KIT YSK 100 e a nase 41 SERIAL NUMBERS un ana existe usc o snp C ee 41 SIDETONE BEEP VOLUME ADJUSTMENT 41 SQUELCH SETTINGS FOR FM AND SSB sees entente seen 42 STORING MEMORIES REMOTELY ssesesscesccececsesessececeseceeeesessnseceeeccesesesenseaeeeseeeeseeeees 42 SWR METER INTERPRETATION
3. 100 0 Too 23 144 TXPO 00 0 1100 24 100 0 foo 25 Mic 55 modes 5 0 foo 26 FM Mic Gain FM mode 50 fo foo 27 CompLevel SSB AM modes 5 0 Too 28 AFSK Level_Tinputsensitvity 50 106 29 APO Time hours to shutoff oFF oFF 1 2 lh 30 EON ERR path a filter KHz 34 AFSK mode mode sideband PCt F rtty L rtty U PCt L PCt U 35 RTTY Shift frequency shift es 36 RITY m 12000 6 1200 9600 display 39 Packettone set for 2125 1170 1700 2125 2210 Remarks 40 HF RPT 10m shift 0 1 0 10MHz SHIFT Su res dto ge T SHIFT qu ope m mee qx SHIFT Bar RE IFT 44 144MARS auto shift on off on fon 45 430 auto shift fon ES 46 Keyer Type keyerorpaddle 2 EL2 buG 47 Dot Se oot to space 10 jo 05 IT 48 Dash Size dashtospace 30 0 15 49 CWDeay semi QSk Ssec 0 25 LS loy log 50 HEEL 51 CW FULL Seni 52 Keyer Speed pm al oe 53 QSK Delay shifts output times 54 _inputsensitvity 502 19001 55 oc nngime 56
4. SQL RF gain mode of control 54 56 IF 57 Lock made flock mode PAnELIdIAL 58 AM amp FM Click NS knob EE function 59 Mic SWset micbutons 1 1 60 Level IF noise 10 wer d 62 RX LSB CAR Carierpont 0 02 92 63 Carter point 13 1 11 64 TXLSBCAR Carrierpoint 0 02 0 65 USB Carrier point 02 08 66 5167 5 2 Alaska FF oFF on emergency USA only There is a second set of factory service menu functions 01 to F59 WARNING changing these may reset all the memories If you intend to make any changes re the original values first Most of these settings are unique to each radio and are cord all determined by using alignment procedures described in the FT100 Service Manual Do not change these values unless you are sure of what you are doing To activate them put the transceiver in VFO mode and turn it off Press and hold the keys while holding them in press and hold in the PWR switch for 1 2 second to turn the transceiver on Now let go of all keys Then press and hold the FUNC key for 1 2 second to get to the menu and then rotate the select knob to get to a second menu 01 to F59 after before 01 When you turn the rig off and back on it returns to the normal menu 66 or Nr Function Default may vary Setto Remarks F01 144 RF GAIN 166 F02 430 RF GAIN
5. indication circuits at least use a DC offset along with a DC gain setting The latter allows you to set the steepness of the indicated RSL receive signal level function The whole business is about proper interpretation of either a detector output or the AGC voltage The FT 100D uses the AGC voltage to generate the indicated RSL But they only included one control DC offset to you re really limited in terms of setting the accuracy of it Probably the best thing to do is to calibrate it on your favorite band for the standard 50 microvolts RMS single sinusoid for S9 and perhaps characterize your indicated RSL versus actual RSL so at least you know how to translate what the meter is indicating FT100D CW signal Assume first segment is S2 based on relationship to segment which corresponds to S9 7 2 MHz setting 205 With S9 set for 73 dBm Segments Display Equivalent Actual level Actual level Display readout standard dbm in S units error level dBm 1 S2 115 102 S4 2 S units low 2 S3 109 101 S4 1 5 unit low 3 S4 103 99 S5 1 5 unit low 4 S5 97 98 S5 0 5 S6 91 96 S5 1 S unit high 39 6 57 85 92 56 1 S unit high 7 S8 79 85 57 1 S unit high 8 S9 73 73 59 0 9 S9 2
6. PWR switch for 1 2 second to turn the transceiver On Now let go of all keys The display will read HF for 1 2 second or less it may be so quick that you don t see it but continue with the mod e Set the dial frequency to 549 61163MHz You will need to use LSB USB CW to get the last digits e After you enter 549 61163Mhz press the MODE button to go back to FM Mode and turn the power off e Press and hold DWN and STEP keys while holding them in press and hold in the PWR switch for 1 2 second to turn the transceiver On Now let go of all keys The display will read vU on for a 1 2 second or less it may be so quick that you don t see it but continue with the mod The modification is complete Turn the radio off and back on to continue e RX amp TX 1 85MHz 30MHz 50MHz 54MHz 140MHz 174MHz 420M Hz 470MHz The following Yaesu document also explains an out of band modification 30 34 New Frequency Range RX 30 kHz 824 MHz 849MHz B69MHz 894 961MHz p transmit coverage Be careful not to transmit outside the Amateur Bands 1 8MHz 30 MHz 50MHz 54 MHz 140MHz 174 MHz 420 MHz 470 MHz Remove Front Panel from radio and open remove the rear cover from the Front Panel unit Locate and remove R6035 and R6036 on the display board Reassemble and install the Front Panel on the radio Press and hold DWN and STEP buttons w
7. and play back at 1 2 cm sec so I can listen to the CW at a more comfortable 18 20 wpm Band Data Pigtail Pinout The Band Data pigtail can control a VL 1000 amplifier when set internally to control an amplifier The normal mode is for the CAT Tuner function but it can be rearranged with an internal jumper shown on page 19 of the manual to control an amplifier If you re curious about how the signals work in that mode the table below shows the logic depending on the band selected The images to help explain this better are shown here Yaesu FT 100D Band Data Output map H 4 4 vdc L 0 vdc Band 18 3 5 7 10 14 18 21 24 28 50 144 440 L H L H L H L H L H L B L H H L L H H L H H L L L L H H H H L L L L H D L L L L L L L H H H H H CTCSS and memory functions Storing CTCSS frequencies in memory along with frequencies is a bit tricky When putting frequencies into memory from the VFO you must have encode on and the display 16 must show ENC for the CTCSS to go into memory If the main display does not show ENC when the frequency is put into memory the CTCSS setting is not stored Duplexers The 5100 is designed to tune on all the bands on which the radio transmits including 2m and 70cm This requires a duplexer like the Diamond MX62M or the Comet CF706 to connect the VHF UHF and HF pigtails together The actual cross over frequency between the pigta
8. is as follows 4 GND 6 5 1 27 Pin 1 SW 2 multi function switching Pin 2 N C 9600bps packet data output FT 90 Pin 3 9 Pin 4 GND Pin 5 Microphone Input Pin 6 SW 1 PTT UP DOWN The circuit below gives you PTT UP DOWN ACC P P1 and P Don t forget that you can program the functions of P P1 and P2 on the FT 100 SW2 SW1 When you try to use various mics with the FT 100D you may find that you have muffled or very low apparent audio drive level This may be due to the fact that the mic you are trying to use has a relatively high output impedance as compared to the input impedance of the FT 100D This can result in the low audio and or muffled transmit audio problems There is a pre amp design available at http hometown aol com ampmicro Mic Buttons The microphone MH36B has a complete set of numeric buttons but they cannot be used for numeric frequency input They can only be used to send DTMF tones in FM mode by holding in the PTT and simultaneously pressing the numeric sequence There is no audio 28 feedback provided to the user while sending the tones There are also 4 buttons labeled and D but there is documented use for these keys Microphone modification This modification to the stock microphone will bring you excellent transmit audio reports e Open the mic case Remove the 3 larger internal screws and the 1 smaller screw in the micros
9. mode if you see it is jumping over unused memory locations Another difficulty is getting the memories stuck in a particular memory group The main memory 1 300 is divided up into 6 separate 50 memory groups You can restrict tuning to a single group by pressing in on the SELECT dial for 1 2 seconds while in MEM mode You reverse the procedure with the same sequence You will see an GCH appear in the lower left hand corner of the display if you are locked into a particular memory group 1 through 6 Pressing the SELECT for 1 2 seconds will put it back in memory channel mode and it will display MCH in the lower left hand corner If you are not careful and only press the SELECT momentarily it will put you in VFO mode and you ll have to press the VFO M key to get back into memory mode This is not explained correctly on page 71 of the manual There are no provisions for alpha numeric labeling of the memories in the FT100 26 Mic adapter PowerWerx www powerwerx com sell an adapter to connect standard base microphones to the FT100 For the lordly sum of 30 you are the proud owner of a short piece of wire with a cheap connector on both ends It might be cheaper to do it yourself In fact it 1s much cheaper Here s what you need to know The up down PTT switches are all connected to the SW1 line on the FT100 microphone jack Different resistor values address different buttons The pin out on the FT 100 90 8100 Mic jack
10. 0 or 160 meter bands so don t forget to switch menu item 61 to OFF or to Tuner when you switch from the ATAS100 to another antenna ATBK100 Ground Plane Kit The 100 is a kit consisting of 3 ground radials for the ATAS100 intended to make it suitable for use as a base antenna Although there is no information available on the Yaesu website about the ATBK100 this 05590 kit is supposed to supply a ground plane for the 50 MHz 144 MHz and 430 MHz bands One owner responded that he was able to get the antenna to work on other HF bands by adding two 20 lengths of wire to the 100 to act as a counterpoise Audio Settings improving transmitted audio performance Bill NAXEO has contributed the following advice for those who are not satisfied with their audio reports First make sure the rig s chassis is grounded to the frame of the vehicle and that the rig is powered directly off the battery with minimal voltage loss through the power cable Secondly make sure that the voltage is sufficient for the rig The specifications call for 13 8V DC and so if you re not running the engine it s likely that your voltage won t run the rig correctly for very long This will be apparent when operating with the engine off as the battery voltage begins to sag down around 12V Here are some of the settings Bill recommends that have worked for him and others to improve the audio Menu Item Description Value 2
11. 0dB 53 60 S9 13dB 7dB high 10 S9 40dB 33 47 S9 26dB 14 dB high 11 S9 60dB 13 38 S9 35dB 25 dB high S Meter accuracy 10 8 gt 50 2 2 ib 5 Actual Level 70 Displayed Level la 3 90 90 5 100 lt 110 10 20 30 40 50 60 70 80 90 100 110 120 Reference Receive Signal Level dBm Satellite Operations Although the FT100 is not designed for use with satellites several owners have reported moderate success in working satellites with it namely AO27 RS13 FO20 29 5035 0014 and even 10 To work a satellite the rig must be put in split mode with the uplink and downlink frequencies set appropriately If you want to store a satellite settings in memory you can use the DUP memories which are specifically designed to hold split frequencies Working a linear transponder satellite in half duplex mode is not easy You should have some experience in using satellites with rigs that have been designed for satellite operations such as the FT847 40 FT100 SuperControl http www supercontrol de now offers special satellite mode that can automatically correct the transceiver with Doppler shift data The program supports the NOVA and Satscape satellite tracking programs which are used to get the needed range rate data of the desired satellites Both transceivers VFO
12. 166 F03 HF RX IF G 98 FM4 soRXIFG iia Fo 144 FO7 SFULLSCALE 14 O Fo amp ssBSQL Foo FMNSQL B FM HFICALO 292 FI2 VUHFIC LC 222 FiS HFPO TOW Je o FIS HFPO 100 ha O Fi6 sOPO iW 25 Fi7 50PO20N l45 FIB 5OPOS0W 83 19 50 10044 ha F20 70PO10W 063 70MHz F21 i44PO20W Jes oo t44POs0w 11222 139 F25 351XIFG F26 71XIFG Fo7 101XIFG Je Je 2 28 5 1 3 F 7 ALC METER 1 _ F38 HF METER izo F 9 z2 F40 144 PO METER ib F41 430POMETER Jes FA2 HFREVALC Ja FA3 SOREVALC Jaa o F44 70 REVALC i27 70MHz 144 173 Jeo FA7 SWR METER ldi FAB OVERHEATi 20 FA9 OVERHEAT2 235s O F50 CW CAR LEVEL 66 51 AM CAR LEVEL iia F52 FMTXFREQ 3247 O _ FB3 T
13. 220 Mhz band All memory channels will be lost Repeater offsets remain intact for USA versions Back of front panel Top left corner 29 Remove jumpers amp 2 leave 3 amp 4 Remove Front Panel from radio and open the rear cover from the Front Panel unit Be careful a cable connects them together Locate and remove R6035 1 and R6036 2 on the display board Note The factory removed R6035 on my radio so I only had to remove R6036 You should end up like the picture above e Reassemble and install the Front Panel on the radio Note if the 2 SMD diodes not are present then you should skip the above steps Press DPS and LOCK keys while holding them in press and hold the PWR switch for 1 2 second to turn the transceiver on Wait for the transceiver to initialize itself You WILL LOOSE all memory channels programmed Turn the transceiver off e Press and hold DWN and STEP keys while holding them in press and hold in the PWR switch for 1 2 second to turn the transceiver On Now let go of all keys The display will read r on for a 1 2 second or less it may be so quick that you don t see it but continue with the mod e Set the dial frequency to 375 72727MHz You will need to use LSB USB CW to get the last digits After you enter 375 72727Mhz press the MODE button to go back to FM Mode and turn the power off e Press and hold DWN and STEP keys while holding them in press and hold in the
14. 5 Mic Gain for SSB and AM 40 modes 26 FM Mic Gain 45 21 Compression Level 40 33 FM Deviation 5 62 RX LSB Carrier 050 63 RC USB Carrier 050 64 TX LSB Carrier 200 65 TX USB Carrier 200 15 CWID with ARTS CWID feature appears to have a bug It sends out the W as a U in Morse code CWID feature when enabled transmits identifier every 10 minutes when the radio is operating in ARTS mode Here is a set of instructions on how to test if your radio is affected Go to menu item 11 and enter a CW ID string with some W s in it To do this press Select knob and use the main dial to select the characters Press the Select knob to advance one character Program all 8 characters using the Select button to advance When you get them all programmed press Select again and the radio will playback the ID you ve stored Use a tape recorder unless you think you can copy comfortably at 35 40 wpm If you want to hear it on the air proceed with the following instructions Go to menu item 10 and enable the CW id during ARTS operation Set the radio to a clear simplex FM frequency Press the FUNC key until you get to screen 3 which shows TON DCS and ART Enable ART Listen on another radio The DCS code will be sent every 15 seconds and the CW ID will occur every 10 minutes Again use a tape recorder as the ID comes across at about 35 40 wpm I have a little recorder that will allow me to record at 2 4 cm sec
15. 85 20 82 Frequency 21 85 22 83 23 85 24 85 25 85 26 85 27 81 28 81 29 71 30 62 Frequency Watts 50 32 50 Mhz 51 34 9 e Watts z 52 35 40 53 32 006 0 Frequency Watts 50 51 52 53 Frequency 54 32 141 44 142 48 143 48 144 48 145 48 VHF 146 48 147 48 148 48 149 48 150 48 151 48 152 47 153 45 2 154 44 e VHF 155 32 z 156 26 157 22 158 17 159 14 160 10 162 8 163 7 S 889588888 165 5 Frequenc 166 4 3 y 167 2 168 1 169 1 170 0 5 Frequency Watts 420 5 421 7 422 11 423 16 424 21 UHF 425 23 426 23 427 23 428 23 429 23 430 23 431 23 5 e UHF 432 23 z 433 23 434 23 435 23 436 23 437 23 438 22 YS du usw 439 22 440 22 Frequency 441 22 33 443 22 444 22 445 22 446 22 447 22 448 22 449 22 450 22 451 22 452 22 453 22 454 22 455 20 456 14 457 9 458 6 459 4 460 2 461 1 462 1 463 1 464 1 465 1 466 1 467 1 468 1 469 1 470 1 Power Connectors Line Filters An excellent source for power connectors can be found at www powerwerx com They carry the OEM connectors and shells for the FT100 and other rigs as well as the Anderson Powerpole connectors which allows you to make up cables so that it s easier to interchange different brands of radios with various power supplies They also carry line filters t
16. DO I TAKE IT APART Extend the antenna fully 40m Remove from vehicle and take it to a clean work surface Remove the whip for ease of handling Slide up the 2 rubber covers exposing the screws Remove the 3 lower screws above the base CAREFULLY remove the base by gently pulling down while using a slight rocking motion the resistance is from a O ring Carefully withdraw the base assembly while noting the routing of the motor wires 8 Unplug the micro connector from the motor controller board the red and black wires that leads to the motor clutch assembly and set the base aside 9 Mark on the shaft the location of the bottom of the boot then slide the boot upwards exposing the loading coil 10 Remove the remaining 6 screws on the antenna 11 Carefully slide up the loading coil which also removes the motor clutch assembly be careful with the alignment pin There is more than can be disassembled but the above steps are all that is needed for most maintenance and repairs While you re in there clean the moving surfaces up and oil with a light oil like mineral oil that won t harm plastics while taking care not to contaminate the contacts coils and connections por HOW DO I PUT IT TOGETHER 1 Basically reverse the above procedure 2 Be careful to make sure the alignment pin about 7 long from the loading coil to the motor clutch assembly is in place 3 Pay special attention to the routing of the motor w
17. RXLSBCAR 0i F54 TRX USB CAR 0 01 F55 blank F56 blank blank 141 257 DESTINAHF USA lt STD EU FRAN BEL GER USA AUS UT F58 DESTINA V U USA lt JPN USA EU1 EU2 EU3 EU4 AUS F59 blank AM Settings Gary Mitchelson N3JPU has done some interesting tests with the AM settings and found some settings that work much better than the defaults The parameters that sound the best PO set to 25 Mic gain to 40 to 50 and Carrier Level set to 225 51 menu You can hear a sample of his testing at http mywebpages comcast net n3jpu Most owners who have had difficulties with AM audio quality have reported that the 6k HZ option AM filter p n XF117A is an absolute necessity for both transmitting and receiving in AM mode The following procedure will result in excellent AM transmit operation with the FT 100 D The User s Manual does not include any guidance regarding this For this discussion I assume HF AM operation e Install the 6 KHz filter You need the filter in order to have proper AM operation Tum on the unit while holding in the A B and C buttons in order to access the sub menu F functions e Place the unit in AM mode e Set the MIC gain setting to 17 seventeen e Using the F51 function key the mic and set your un modulated carrier output power to 25 Watts no higher e That s it You should now have 100 Watts on voice peaks which is 6 dB 4 ti
18. T K22105001 CHIP CAP GRM39B104K16PT K22124805 GRM39B103M50PT K22174823 GRM39B 103MSOPT K22174823 GRM395104K16PT K22124805 GRM39B104K16PT K22124805 GRM39B104K16PT K22124805 LALOANA 00K L1190138 LALO4NA 00K L1190138 17806 61090937 NJM2903M 2 61091073 MB3763PF G BND TF 01091224 RMC1 16 183FTP 424183183 RMC1 16 392FTP 424183392 RMC1 16 103FTP 424183103 RMC1 16 103JATP 424185103 RMC1 16 103JATP 424185103 RMC1 16 562 424183562 RMC1 16 103 424183103 RMC1 16 103FTP 24183103 momoomogmumngo 11 Mechanical Details Exploded Views amp Mechanical Parts Serew KIT YAESU P N 58001571 PAN HEAD SCREW M2XANI SCREW PAN HEAD SCREW 5 2 6X4 BINDING HEAD SCREW M3X5NI M3X 8 E E F i 5 SCREW M3X5 100300 SPRING LOCK WASHER SW3 n f 091304001 SCREW 2 4 M 051408001 HEX SOCKET SET SCREW 4 6 1 NYLON WASHER WNG 5 58100646 MACCING ASS Y 5 100 4 12 Disclaimer The following procedures can possibly void your warranty WHAT S IN THERE And a little on how it works The stainless steel whip is mounted on top of a loading coil under the rubber boot The coil consists of copper wire wound around a grooved fiberglass rod Part of the reason the antenna is guaranteed to work on 40 20 15 and 10m HF bands but
19. Yaesu 100 undocumented Compiled by PA3GMP Printed 4 April 2004 TABLE OF CONTENTS MENU SETTINGS OVERVIEW 3 Heeres 7 AT AS 1 00 AUTOTUNING bees seo eee does Te Re EE 8 WHATS IN THERE uu Mn 13 HOW DOT TARE IP APART eit a E RU D RE REI NEEDS 14 TE TOGETHER nannten 14 5 25055 0 ea aaa Ns 14 ATAS 1 ATAS 2 SETTINGS 15 100 GROUND PLANE KIT 15 CWID WITH AR ES 16 BAND DATA PIGTAIL PINOUT 16 CTCSS AND MEMORY 8 2 1 2 4 2 24 2 90000000 0000000 16 DUPEEXERS NNNM Md I 17 XTRAS AND d te tita 17 FACTORY MODIFIEATIONS 17 Intermittent High SWR ICON residet vti eei ates ee 17 Thermal modification aaa 20 ECz20 AUTOTUNER RR ts Sods agate Piet 24 FIRMWARE UPGRADES 25 te Pre 25 MANUAL REVISIONS ie pO HERD ED iss den
20. case The mod involves fixing the grounding in the coax sockets on LPF of the radio and a metal shield on the Main Unit A degradation in the LPF grounding can cause the rig to break into oscillation even at lower power causing the HIGH SWR icon to appear intermittently even with a good antenna match on the higher HF bands The mod will eliminate this oscillation and the high SWR reports Here are a few pictures of the factory installed mod The adhesive copper tape has been replaced screws or clamps that are attached to the casting web Note that on the upper strap they have added a screw and the lower strap was added and soldered to the shield as well as the coax and also screwed to the casting fore the factory mod Be 18 After the factory mod 19 JEN __ gt After the factory mod The SWR icon with an X next to it indicates that the SWR is out of range If you see an SWR icon with an O next to it flash momentarily it is an indication that the antenna has finished tuning and the SWR is Thermal modification The cooling fans will only work during transmission when the radio is tuned to 70 500 or higher Yaesu will fix this by mounting a thermal switch that bypasses the electronic fan control circuit The thermal mod is done on an as requested basis since Yaesu feels that keeping the fans off in V U receive poses no threat of overheating the radio A simpler way to do it yourself is to ad
21. caso USA YAESU U S A INTERNATIONAL DIVISION 10913 North 308 Zoe Sate 105 Mae ATAS 100 SE Snpeeg 3 11180 Sovgho The Nemerianc YAESU UK LTD Technical Supplement Karen Maren Mace Taa OA V e PP YAESU GERMANY GmbH Are Kroner Hang 2 045624 Scrwetet Germany 1998 Yaesu Musen Co Ltd Printed in Japan ha Sra East Kowioon Kong 12959000 9804 0 Specifications Frequency Range 7 14 21 28 50 144 430 MHz Amateur Bands Height Approx 1 4 1 6 meters 4 59 5 24 feet RA0084400 s s ROTASSY Weight Approx 930 g 2 05 Ibs Tem Input Impedance 520 Max Input Power 120 Watts SSB Matched SWR Less than 2 0 1 with proper counterpoise Specifications subject to change without notice or obligation RA0081600 DUST BUUTS Circuit Diagram RA0083500 RUBBER RING 0095200 LABEL Power Gain Parts Layout Component side ia 17806 01001 Png Qu Pn1 NJM2903M Q1002 MB3763PF G BND TF Q1003 10 Parts List REF DESCRIPTION MFR S DESIG YAESU PIN VERS LOT REMOTE UNIT PCB with Components 8 800649 ENELLC CIR HI B 28 28 GRM39B103M50PT 1 AL ELECTRO ECEVIHSOTOSR K48170001 GRM39B103MSOPT K22174823 AL ELECTRO CAP ECEVICSI00SR K48120001 CHIP CAP GRM398103M50PT K22174823 CHIP CAP GRM39F105Z10P
22. ction when you press in the TUN button for 1 2 second once it has found its first good match However it the ATAS cannot find a match it will run all the way to one end turn around and start over This process can take a while since the antenna runs open loop when it loses its position Since it doesn t know which position the antenna is in unless it makes its own successful match it needs to be sure it has gone all the way to the end before reversing which can take a very long time Anytime it is not sitting right where it found a match all by itself it can end up starting out in the wrong direction next time Examples would be if you manually do even just a little fine tuning or if you interrupt autotuning and change bands Then the rule is very simple it starts the next autotune by going in the last direction it was going in which is not necessarily right If it s going in the wrong direction the antenna will move all the way to a stop and then it will have to turn around and start over again after a long delay If you recognize that it s going in the wrong direction you can avoid the long delay by aborting the autotuning process by hitting the TUN key momentarily then manually move the antenna just a little with the PTT and up or down keys in the correct direction and then recommence with the autotuning procedure ATAS 100 Disassembly YAESU MUSEN CO LTD 1 20 2 Toyo 1 ACTIVE TUNING ANTENNA SYSTEM VAEBUUSA
23. d a 50 to 120 ohm 1 Watt resistor between one of the black wires of the fans and ground for instance the chassis The resistor value will determine the idle speed of the fans Pick one that suits your preferences The pictures below show the Yaesu factory modification 20 Prior to modification 21 Prior to modification 22 After modification 23 After modification There is also a software work around to get the fans running on 2 and 70 RX only by using the SPL button and VFO to turn on the SPLIT function e Setthe VFO A on the QRG on 2m or 70cm band and VFO B ona TX frequency on HF or 6m Briefly press the TX PTT which briefly transmits on HF or 6m e Now the fans are running full speed and will slow down in a few seconds without stopping entirely FC 20 Autotuner The FC 20 auto tuner is available as an accessory for the FT 100 The FC 20 was designed specifically for the FT 847 and FT 100 and is intimately mated to them The FC 20 is capable of matching a SWR up to 3 to 1 It features 100 memories that memorize your favorite frequencies so that when you return to them the unit can instantly tune to a frequency without having to evaluate the SWR as it tunes People have identified two limitations to the FC 20 the matching range and the inability to use both CAT control and the tuner simultaneously If you don t need a wide matching 24 range don t use the CAT control wit
24. d to move up and down through the amateur bands according to the manual However several users have noticed that the radio will put additional non amateur bands in the list if the radio is tuned to them while operating in VFO mode Examples of non amateur bands that can end up in the list include the NOAA weather station 165 MHz and Citizen s Band 27 MHz The FT100 will insert one extra band on the HF side and one on the VHF UHF side of the radio It is not clear how one removes the non amateur bands from the list other than resetting the radio V U MESFET pre amp adjustment When the FT 100 is in receive mode on VHF or UHF now and then the squelch may splatter To clarify what happens is this The S meter indicates brief peaks from 51 to S9 like there s a lot of static or irregular spark induced QRM The green busy LED goes on and off e Lots of static like crackling sounds come from the speaker This all ooks like there s just a lot of QRM ish noise on the frequency but when you turn the squelch threshold knob counterclockwise to open up the squelch the whole phenomenon disappears If there really was static or QRM being received this should not happen Also if you turn the squelch threshold knob fully clockwise the speaker remains muted but the busy LED and the S meter still indicate irregular intermittent and brief signal peaks This is caused by spurious responses in the V U MesFet pre amps the SGM2016s T
25. ed view of the rig can be found on http kOlee com images FT 100 20Exploded 20View pdf There is also an effort underway to make the alignment procedures available on http kOlee com techsupp htm The FCC site can be found at http www fcc gov oet fccid To get the information use the Grantee code K66 and the equipment product code FT 100 and select View Exhibits Here you may view schematics photos block diagram parts lists and a PDF version of the user manual The manual shown appears to be only a rough draft with 36 pages of information vs 108 in the finished manual It contains no illustrations The manual and schematics were scanned and converted to pdf and you will find resolution of the schematics is not high enough to be usable It is highly recommended that if you lost your manual or bought a used radio without one that you contact Yaesu Parts and purchase a new one Memory Programming There are a few common difficulties in programming the memories The radio has a mode to allow rapid tuning through the memories by skipping unused memory locations This feature must be disabled to store frequencies in an unused memory location To disable it place the rig in memory mode by pressing the VFO M button until MEM is shown in the display Then hit the STEP key to enable or disable the vacant memories selection Reverse the procedure with the same sequence Turning the SELECT knob will help you to determine if the radio is in rapid
26. h the radio then the 20 is reported to operate very smoothly and is well integrated with the radio If these limitations are important to you should consider the LDG 11 autotuner Firmware Upgrades A common question asked regarding the FT100 is whether or not its firmware can be upgraded to add some missing feature in the future such as memory management via a PC or keypad frequency entry Unfortunately the design of the FT100 does not allow for this kind of feature since the microcontrollers are not flash based but rather OTP one time programmable devices or even mask based in later production runs They can be removed and replaced but this takes special SMT surface mount technology soldering equipment There are three microcontrollers in the FT100 The FT100 s main processor mounted on the controller unit is a 32 80 pin 16 bit CPU from NEC P N UPD78P4038 e There is also an 8 MHz 48 pin 8 bit microprocessor on the controller unit made by Fujitsu P N MB89P133PFM that appears to be the one that does the electronic keying since it only has a few inputs and they connect to the keyl and key2 on the back of the unit It uses a few of its serial pins to communicate with the main CPU FMI see the Fujitsu MB89P133PFM datasheet The display board has a 5 Mhz 80 pin 8 bit NEC microprocessor P N UPD78P054 and that communicates with the main CPU via a serial link Keypad Frequency Entry There is n
27. he cure is to go into the hidden F menus hold in the ABC keys and power the radio on and then press the function key and rotate the dial until you come to the F menus and the first on will be F01 and once you find F01 the VHF receivers RF gain lower the DAC value to 115 and then go to F02 the UHF receivers RF gain and lower its DAC value to 106 You may want to note the original DAC values and write them down just for reference Some users have had this problem and lowering the DAC value for each pre amp cured it IMD tests with the original values and the lowered values show no difference in sensitivity nor any change in 3rd order intercept point There is however a marked reduction in spurious response Apparently the radios are set up with a generic factory programmed DAC value and not by actually measuring intercept points or by looking around the receiver range for spurious responses The DAC values have nothing to do directly with controlling the gain such as controlling an attenuator value all the DAC does is set the bias to the MESFETs and they are borderline unstable at the bias setting with the factory DAC values 43 Yaesu Contacts Here is the new contact information for Yaesu as of April 2002 VERTEX STANDARD US HEADQUARTERS 10900 Walker Street Cypress CA 90630 Phone 714 827 7600 Fax 714 827 8100 EMAIL ADDRESSES Amateur Sales amateursales vxstdusa com Amateur Tech Support amateurtech vxstdusa com Amateur C
28. hile turning on the power The display will read r on Set dial frequency to 375 72727MHz and turn the power off Press and hold DWN and STEP buttons while turning on the power The display will read Set dial frequency to 549 61163 MHz and turn the power off Press and hold DWN and STEP buttons while turning on the power The display will read vU on The modification is complete Turn radio off and back on to continue R6035 5036 DISPLAX BOARD BET Tifi Ea 7 Output power measured in and out of band Frequency 100 50 10 0 MHz dBm W dBm W dBm W dBm W 432 433 21 4 39 3 8 5 33 5 22 30 8 1 2 145 471 51 3 43 2 20 9 37 4 5 5 35 2 3 3 50 497 93 3 45 1 32 4 42 5 17 8 35 0 3 2 28 50 0 100 0 45 3 33 9 38 1 6 5 35 0 3 2 Date 47 98 3l 24 9 50 0 100 0 45 3 33 9 38 1 6 5 35 0 3 2 21 50 0 100 0 45 4 34 7 38 1 6 5 35 0 3 2 18 15 50 0 100 0 45 3 33 9 38 1 6 5 35 0 3 2 14 50 0 100 0 45 3 33 9 38 1 6 5 35 1 3 2 10 1 49 9 97 7 45 2 33 1 38 0 6 3 35 0 3 2 7 49 8 95 5 45 2 33 1 38 0 6 3 34 9 31 Measured with HP432 Narda 40dB attenuator Power sensor range from 10MHz to 12Ghz All readings at 100 power on all bands Frequency Output MHz Watts HF 2 82 3 83 4 82 100 5 83 6 83 7 88 80 8 80 9 85 60 10 84 t e HF 11 88 z 40 12 86 13 81 14 80 20 15 82 16 84 17 68 0 18 85 wee SS BEER 19
29. ils is 70 5Mhz However many people prefer to use a separate antenna for the VHF UHF bands since those antennas typically cost about the same price as a duplexer and usually have some gain whereas the ATAS100 has gain on VHF UHF Also with separate antennas you don t have to worry about retuning when switching between VHF UHF and HF A consideration when using a duplexer is that the DC voltage for tuning the ATAS 100 is supplied through the HF pigtail Therefore this pigtail must always be connected to the ATAS for tuning purposes Also it must not be capacitively coupled inside the duplexer or it will block the DC motor control voltage Extra Bands You may have noticed two extra bands appear while moving through the normal ham bands using the up down keys Apparently the rig remembers an extra band for HF and another for V U portions of the radio If you tune outside a normal ham HF band either accidentally or intentionally you ll notice that this band will now appear in a list of bands as you use the up down keys The same is true for the V U side of the radio For example if you tune to the weather band at 162 Mhz it will appear in the list between the 2M and 70cm bands Short of resetting the radio there s no way to get rid of these bands Some have elected to move them to the end of the list by tuning a frequency below 160M or above 70cm so that they don t appear inside the list of bands Factory Modifications There are two com
30. ind that the Menu is now different Rotate the selector knob until you find F 07 S FULL SCALE on the display Make a note of the current setting of this item so you can go back to it if you want to Now adjust this item just like any other Menu item by rotating the main dial until you get a full scale reading on the S meter There also is an adjustment of the 144 MHz RF Gain F 01 and the 144 MHz IF Gain F 05 Perhaps a little adjustment to the RF Gain would help with the weak repeaters Whatever you do make a note of the original settings of these items Adding too much front end gain can degrade the intermodulation performance of the receiver section Also if you change the RF or IF Gain the S meter indication will change too Press the FUNC key to exit the alignment mode If you have the equipment for it you can more accurately adjust the s meter by injecting 14 200 MHz signal in USB mode into the antenna at 95dbmicroVolt and adjust F07 to read S9 60dB You could also adjust it for an S9 reading on 40 Meters using 50 microvolts rms for S9 then re calibrate the S meter mentally by remembering that above S5 the S reading is one S unit higher than actual and also that S9 20dB is actually S9 15dB S9 40 is S9 25 and S9 60 is 59 35 There is only a single adjustment for the S meter which amounts to DC offset It s NOT a scalar you can do is shove the entire curve one way or the other Most simple RSL
31. ires to prevent pinching between the motor controller board and motor clutch assembly ATAS100 Manual Tuning The ATAS100 can be tuned up and down manually by holding in on the PTT switch and using the UP DOWN keys on the front of the radio If you thought it meant the UP DOWN keys on top of the hand mic you re not alone as several others have made the same mistake and the manual does not specify which UP DOWN keys to use It has been noted that the P1 P2 keys the mic will cause the antenna tune icon to come on if you push them while holding the PTT but they do not actually move the antenna 14 ATAS 1 ATAS 2 Settings Menu item 61 is has several settings for controlling the way the ATAS100 antenna works In the user manual there are several errors describing this function On page 14 the instructions are correct and the easiest way to remember the correct settings are ATAS 1 antenna ATAS 2 two separate antennas In other words if you re using the ATAS100 on all bands with a duplexer choose ATAS 1 If you are using the ATAS100 for HF only and a separate antenna for VHF UHF use ATAS 2 Page 62 in the manual is backwards from this as is page 94 which recommends that a duplexer is required with ATAS 2 The newer manuals may have corrected these errors but as of manual revision E08981003 the mistakes were still present Another user noticed that when either of these selections are made the radio will not transmit on the 8
32. mes the un modulated carrier power Extra hints Set function F15 to 170 in order to avoid non linear compression on voice peaks But note the original setting and restore F15 to the factory setting when you operate SSB and You should have 100 Watts output in CW mode when 215 is properly set You can use the speech processor during AM operation but you must not exceed a setting of 17 when using it just as with non processed operation The PROcessor control is simply a second MIC gain control which over rides the MIC gain control setting whenever you enable the PROcessor The FT 100 D actually does not allow you to vary the compression percentage AT 11MP Autotuner Some owners have opted to purchase the AT 11MP auto tuner from LDG Electronics This is available in either a kit or assembled format and does not suffer from the CAT FC 20 limitations There is an accessory for the FT100 D called the OTT or One Touch Tune available from WART com that allows you to use the Tune button on the FT100 to control the tuning function of the AT11 directly from the FT100 It also allows you to maintain the CAT compatibility which is something you normally lose with the FC 20 autotuner ATAS 100 Autotuning The tuning behavior of the ATAS can cause confusion unless you understand the algorithm it follows to find a good position Normally if the ATAS is installed correctly and it successfully autotunes itself it will always go in the correct dire
33. mon modifications retrofitted to the FT 100s manufactured prior to 2001 These include the fixes for the Intermittent High SWR ICON problem and the VHF UHF thermal sensor modification to enable the fans in the V U receive mode Although there had been reports that new radios included the SWR mod the mod has been through several iterations and it s possible that even radios purchased today do not include the final mod with the screws but rather just the copper tape held on with adhesive Intermittent High SWR ICON Some owners have had trouble with the HIGH SWR Icon appearing while attempting to transmit on certain bands The most common advice is to make sure that the antenna mount and radio are properly grounded via some heavy braided material to the vehicle chassis Some owners have had success in using clamp on ferrites with the separation kit 17 cable wrapped several times around the ferrite to block common mode current from getting back into the rig Ten meters seems particularly prone to the problem Changing the feedline length has also helped in some cases but this seems to move the problem around more than solving it at the root cause Also some owners have found that fixing the grounding of the LPF board by adding solder around the screw holes and in some cases tightening the screws or adding star washers was sufficient to make their grounding problems go away However there is a very effective modification that has worked in every
34. not on 12 17 and 30m is that the spacing on the coil is wider at the resonant points on the coil on the primary bands allowing easier tuning The loading coil slips into the body of the antenna where spring loaded contacts make the necessary connections At the base of the coil and rod is a Teflon disk that makes sliding contact with the inside of the tube and is threaded for the brass screw rod that raises and lowers the coil About 7 below the contacts is the motor and clutch assembly at the middle rubber cover Two wires run from the motor to the controller board that is mounted on top of the base unit The base matching unit consists of a chromed top cap which includes the mount for the motor controller board Below this is a 3 black plastic tube that forms an insulator At the bottom is the threaded chromed base cap that is where the SO 239 connector screws 13 This base assembly is secured with pins and would be hard dissemble without damaging Inside this is an RF choke coil I m not sure if it is air wound or on a torrid that makes this whole antenna DC grounded This protects the radio from damage from whip contact with power sources static build up etc The coil also helps with matching the antenna and contributes to the high Q of the design Connected to this is a capacitor that leads to the center pin on the SO 239 receptacle in the base This capacitor is also part of the broad band matching network HOW
35. o reduce alternator whine from the DC power source PSK31 SSTV etc soundcard interface with the FT100 Operating soundcard programs like PSK31 is accomplished by using the DATA Jack on the rear panel of the radio The definitions of the jack as provided on pages 20 and 21 of the manual are Pin 1 Data In AFSK input for soundcard Pin 2 GND Pin 3 PTT Pin 4 9600 Baud out Pin 5 1200 Baud out audio out for soundcard Pin 6 Squelch 34 It is necessary to build a circuit or purchase and interface prior to using soundcard programs There are several sources on the web that describe these interface circuits You can find them at e http www gsl net wm2u psk31 html e http krasnodar online ru hamradio soundint htm e http www gsl net kb8wow Psk_Interface_Pagel html If you would prefer to purchase an interface there are several options e A kit complete with cables and enclosure 25 39 assembled http www packetradio com PSK31 htm Rigblaster complete kit fully assembled 90 but not available with FT100 data connector http www westmountainradio com RIGblaster htm Buscommco fully assembled interface 50 configured for FT100 www buxcommco com The cable for the DATA jack is the CT39 and costs U S 10 from Yaesu Jon WA2NKF put together a diagram on how to interface a soundcard to the FT100 using the CT39 or other 6 pin DIN connector It is a very simple interface with a minimal number of external components
36. o way to key frequencies into the FT100 via the microphone s numeric keypad standard on US models That numeric keypad is only used for touch tone encoding when the PTT is held However John Hansen W2FS has designed an auxiliary keypad called the Millenium QS Yer that can be used to enter frequencies from an external keypad The cost is US 70 for the kit or US 95 for the assembled and tested unit It can also be used with the Yaesu FT817 and Icom IC706 mobile radios For details and ordering see http www john hansen net keypad htm Manual Revisions The manual revision can be determined by the part number of the manual This number is located directly below the barcode on the back cover of the manual and will have a format like E08981003 The number on the lower left hand corner of the back cover with the format such as 9907V EY is the printing lot number and does not contain information relevant to the revision of the manual Another common question asked is where one can get a copy of the owner s manual preferably on line You can find it on http kOlee com images FT 100D 20Manual pdf 25 There is also site that has manual schematic and other information related to the submission for approval by the FCC Unfortunately this information is quite out of date since a product is normally submitted to the FCC well in advance of its actual availability and the manual is often just a rough draft of the finished manual An explod
37. ome owners have expressed concern about whether or not the installation of the ATAS100 would comply with the FCC s guidelines on RF exposure I had my ATAS mounted on 37 the corner of the hood which puts it about as close as possible to the driver the results of my RF field strength measurements using a Haladay HI3004 RF field strength meter when running a 100W FM signal as measured in the front seat near the driver s head Band Field strength 10M 8 V m 12M 20 V m 15M 15 V m 17M 15 V m 20M 12 V m 40M 16 V m Outside the vehicle the field strength was about 30V m when measured 2M horizontally from the antenna The FM signal was about twice the strength of a typical SSB signal since it puts out 100W at 100 duty cycle whereas SSB was about half of that So the readings above are about 2 times higher than you would expect in normal HF operation The maximum exposure limit for a controlled environment is 61 4 V m at 30 300Mhz and it rises as the frequency decreases according to the equation 1842 f For an uncontrolled exposure the 30 300Mhz limit is 27 5 V m and increases according to the equation 824 f as the frequency decreases where f is frequency in MHz You can see from the readings that the fields inside the vehicle are well below the maximum allowable for a controlled environment such as a ham station and even meet the more stringent limits for an uncontrolled environment Combine
38. provisions in the rig for uploading or downloading memory locations There was a rumor that RT systems was working on a version of ADMS software to provide this capability but they have confirmed that this is not true The FT100 has more than 300 memory locations and if you intend to fill them all up be aware if you ever reset the radio they will be lost There are also no provisions for labeling the memory locations with alpha numeric labels most likely because the main display uses 7 segment characters for the main frequency which are only appropriate for displaying numbers not alpha characters It s probably best to think of the FT100 as a mobile HF rig with UHF VHF capabilities It can t compete with all the features you would find on a radio designed specifically for VHF UHF operation SWR meter interpretation There is no mention in the FT100 manual how to interpret the SWR bar graph on the FT100 display The following measurements were made on the 10M band by moving the antenna very carefully to get the appropriate number of SWR bars on the FT100 and then disconnecting the radio and measuring the SWR of the ATAS100 with an MFJ259 SWR Analyzer The HighSWR icon came on when an SWR with 7 or 8 bars was showing Number of FT 100 SWR bars 259 SWR reading 1 5 1 7 1 9 2 1 2 4 2 6 2 8 DI Ny A 6 59 3 0 42 UP DOWN band switching The UP DOWN keys are intende
39. s can be automatically updated with the Doppler corrected frequency And if this is not enough there is a possibility to turn on additional realtime VFOs which can display the final frequency for optional transverter devices Of course these final frequencies can also be used for the Doppler shift calculation so it would be perfect for AO 40 Separation kit YSK100 The separation kit is intended to allow the display user interface portion of the radio to be physically separated from the chassis of the radio to facilitate installation in confined spaces There are three cables included with the kit One cable connects the front panel of the radio to the radio chassis Another cable is an extension for the microphone and the third is an extension for the external speaker There is a convenience to having three separate cables because it gives you more flexibility in mounting the display microphone and external speaker There is also a plastic bracket to hold the display It has a quick release feature similar to the radio chassis but is not as convenient to use because the latch is harder to reach and to actuate The price of the kit is US 79 95 Serial Numbers Yaesu appears to use the following format for serial numbers on their amateur products Year of manufacture Month of manufacture Production Run Individual Unit number Example 9D051234 1999 February second month or D Production Run 05 unit 1234 in this run Apparently Yaes
40. t Freg Mode Memory Description 51 Frequency list Freg Mode Memory Description 52 Frequency list Freg Mode Memory Description 53 Frequency list Freg Mode Memory Description 54
41. that with the fact that the measurements were taken at 100W with 100 duty cycle and you can see that this antenna arrangement is considered to be safe by FCC standards Transmit problems on 80 160M Some FT100 owners find that they cannot transmit on any bands below 40M This is almost always a result of having menu item 61 set to either ATAS 1 or ATAS 2 Since the ATAS autotuning antenna only works with bands 40M and above the FT100 will refuse to transmit on 80 or 160M if you set it incorrectly To get around this you need to set that menu item to Tuner or OFF if you re not using an ATAS antenna S Meter Anomalies Several owners have noticed that the S meter on the FT100 tends to be somewhat stingy particularly with FM repeaters Many radios will give 60 dB readings on local FM repeaters whereas the FT100 will rarely register more than 5 9 Some responses to the FT100 mailing list indicated that the FT100 was correctly reporting signal strength whereas all the rigs that give readings such as 60 dB were overloading and going into limiting If you would like to make the S meter more sensitive here are the procedures e First off tune the radio to receive a strong signal from a local 2M FM repeater 38 Next to get into the alignment mode turn the radio off now press the A B and C keys and hold them in while you turn the radio on Now press and hold the FUNC key as you normally would to get into the Menu You ll f
42. the standard memory locations 1 300 Frank PA4FR adds this information as an alternative to using DUP memories FT 100 ARS automatic repeater shift might be activated for 2m and 70 CM bands separately ARS is default enabled for both bands When ARS is enabled any manual change to repeater offset or repeater on off setting is overridden when you change the channel The is actually logical since ARS defines a certain repeater offset and a certain set of repeater channels band plan Any changes that violate these ARS settings are reset when changing channel This is especially confusing in Europe where the 70CM repeater band plan differs per country and therefore the pre programmed repeater band plan often is not correct The solution knowing this strategy behind ARS operation makes figuring out a solution very simple just disable ARS most likely on 70CM only Then set one of the VFOs into the 70CM repeater band and enable repeater shift YES repeater shift setting will be stored with 70CM VFO setting and will remain active when changing channels Such a channel can be stored into memory and repeater shift and offset will be stored with it Note that the repeater shift on off setting is tied to the VFO and band just as it is with other settings like APO So it s not a firmware bug it s a feature it s meant to be like this RF Exposure Because the antenna is so close to the occupants of the vehicle with a mobile rig s
43. to enable the PTT 35 For Yaesu FT 100 Sound Card Audio Out Common Sound Card Audio IN Common Signal Name PINSONDB25 PINS ON DB9 RTS so 7 RS 7 39 6 MINI DIN cro 36 Sandor KG4FET has had good success using the FT100 for PSK31 and recommends using the USB mode not RTTY mode Playing around with RTTY or AFSK mode settings on the FT100 will only cause confusion Sandor also used 1 1 600 ohm isolation transformers on the TX and RX lines as well as an opto isolator for the PTT Problems with FT100 radios Several owners of the early FT100 radios experienced failures of the V U output transistor The word from Yaesu was that solder flux left on the board was to blame Another common issue is related to the Intermittent High SWR ICON problem discussed elsewhere in this document Overheating on V U receive was also an issue on units manufactured prior to 2001 and can be fixed with a thermal sensor modification that Yaesu has applied as a retrofit The 5100 antennas seemed to have a rash of early failures where they refused to move after a while This appears to have been corrected with a new bridge that drives the motor Repeater Offsets The repeater offsets are determined by the values set in menu items 40 43 If you need to program a memory that has a non standard offset use the DUP memories since the repeater offset is not stored with the other parameters in
44. u does not use the letters A or B as a letter in the second position hence the first month January would be February is a etc Some members have reported that they are receiving models beginning with 9D at late as February 2000 while others are getting units with serial numbers beginning with 9I It is unlikely that the 9D units are factory refurbished but rather units that had been accumulating waiting to be updated to the latest revision level and sold as new Refurbished products are required by law to be marked as such Sidetone Beep Volume Adjustment The sidetone beep volume can be adjusted using VR1004 labeled 04 on the board It is located under the top cover adjacent to the speaker connection Be very careful as this pot is very small and can easily be damaged 41 Squelch settings for FM and SSB As shipped the squelch threshold on the FT100 is the same for FM and SSB As you change from 144 Mhz FM operations to HF SSB operation it s preferable to have the squelch open up in SSB mode and then close when going back to FM mode without having to change the SQL RF control all the time This be accomplished by changing Menu 08 SSB SQL in the secondary menus For example set the F menu F08 value from 003 to around 050 to get the desired squelch behavior Storing memories remotely There are no programs currently available to store the FT100 memory settings remotely because Yaesu did not leave any
45. ustomer Service customerservice vxstdusa com Parts yaesuparts vxstdusa com International contact information http www yaesu com amateur contact html 44 FT100 menu settings Entry Set to Description Remarks 45 FT100 menu settings Entry Set to Description Remarks 46 FT100 menu settings Entry Set to Description Remarks 47 FT100 menu settings Entry Set to Description Remarks 48 FT100 menu settings Entry Set to Description Remarks 49 Frequency list Freg Mode Memory Description 50 Frequency lis
46. witch Move the PC board away from the tiny mic element so you can access it e VERY carefully remove the tiny electret mic element from its cylindrical housing using a fine tipped tool Work it out beginning at the edge where you can pull on the rubber grommet Shake the plastic baffle out of the electret housing e Carefully force a sewing needle through the 3rd mic hole that s normally blocked e Insert the electret element back into its cylindrical housing carefully leaving the plastic baffle out Re assemble the mic case Set the MIC gain to about 55 and enjoy the excellent transmit audio that was previously limited by the plastic noise baffle The improvement is dramatic Note that most hams in Europe seem to have an MH 42b microphone on their FT100 FT100D the version without DTMF buttons The MH 42b mic DOES NOT NEED THIS MOD Instead of the two out of three holes there is a slit in the mike housing and the plastic baffle is made out of loosely compressed fibers in this version which does not block sound noticeably As a result this mic doesn t have any audio problems So if you have an MH 42b mic just leave it as it is Modification for out of band transmission The FT 100 can be modified to transmit on frequencies outside the amateur bands This modification opens the Yaesu FT 100 for full transmit on the HF VHF UHF bands The mod works for both the FT100 and FT100D It will not allow you to transmit on the
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