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Yaesu FT-817 Manual
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Yaesu FT-817 Manual

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Download this manual See also: Technical Supplement, Operating Manual
KB2LJJ Radio Mods Database and Manuals
Battery mod for ft-817
Yaesu folks want you to buy the 9.6 vdc battery pack and do not recommend you attempt to charge batts.
from the included "stock" alkaline pack.
They have even rigged the pack so it will not charge. Poking around with a VOM I discovered that there
is a way to make the alkaline pack charge. Pull out the pack and peel the tape off of the end with the
wires.
You will find 2 red wires, 2 black wires and a green wire. cut and insulate the green wire. Put NiCad's or
NiMh Batteries in the the pack and set up the charge time circuit. I have done this with no problem. This
keeps you from breaking the bank buying alkaline cells and give you portable batt. power.
Two words of caution:
As with all mods, the warranty is affected, do so at your own risk.
By during this mod you have now disabled the protection feature and can re-charge alkaline batts.
This could be dangerous and messy...be careful not to do that. Of course with this mod, you will have
little reason to use alkaline cells.
Enjoy. I look forward to hearing about other ft-817 mods for this nifty little rig.
Subject: Install fuse.
When you do the "green wire mod" on the FT-817 to permit charging of internal NiMH or NiCad
batteries, it's very important to install fuse protection or you could ruin your motherboard (a VERY
expensive mistake).
Perhaps the easiest way is to install a 2-3 amp Pico fuse in line with the positive (red) wires leading to
the battery pack. Better still, put another Pico fuse in line with the negative (green) wires also.
Bill
WA6CCA
Subject: Green wire mod
http://www.kb2ljj.com/data/yaesu/ft-817.htm
FT-817 Mods
Pagina 1
03/05/2008 08.24.31

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Summary of Contents for Yaesu FT-817

  • Page 1 FT-817 Mods Battery mod for ft-817 Yaesu folks want you to buy the 9.6 vdc battery pack and do not recommend you attempt to charge batts. from the included "stock" alkaline pack. They have even rigged the pack so it will not charge. Poking around with a VOM I discovered that there is a way to make the alkaline pack charge.
  • Page 2 It will then pull out. This way you can push it back later and no one will ever know! Extended TX for FT-817 Remove the front panel Look down on the back of front panel, with the VFO knob just left of center.
  • Page 3 KB2LJJ Radio Mods Database and Manuals Pagina 3 The following Yaesu FT-817 frequency expansion modification is identical to the version provided by the manufacturer for MARS/CAP application. Remove any power or battery from the Radio. Remove the 14 screws holding the top and bottom covers to the radio.
  • Page 4 I rang out the jumpers to the foil traces on my FT-817 and found that the red numbers of the photo above agree with the schematic included with my radio. J4001 ~ J4009 follow the numbering in red from 1 ~ 9.
  • Page 5 I'm sure some else has seen this config and made the mod. Suggestions??? Thanks Gene KI6LO Hidden menu for YAESU FT-817 Author: Noel - ON7XV Just push and hold A, B and C simultaneously while putting the rig on, and you're in the hidden menu with about 57 settings.
  • Page 6 Tip2- Erweiterung des TX Frequenzbereiches zum Betrieb mit Transvertern Hierzu ist zu sagen, daß im Internet Meinungen existieren, daß sich nicht alle FT-817 erweitern lassen- dies scheint zumindest bei den für den japanischen Markt gebauten zu stimmen. Mein Gerät, Serien-Nr.
  • Page 7 Ganz wichtig- Nach dem Zusamenbau muß unbedingt der folgende Reset durchgeführt werden: Die F und V/M Tasten gleichzeitig festhalten und den FT-817 einschalten. Dabei werden leider alle Speicher und Einstellungen gelöscht ! So, nun noch eine Frage zum Schluß: Der Ft-817 ist ja angeblich "PR-tauglich", hat schon mal wer die Umschalt-zeiten (TXDelay) gemessen-...
  • Page 8 56;HF3POM Power Meter Sensitivity;21MHz;71; 57;50MPOM Power Meter Sensitivity;50MHz;70; 58;VHFPOM Power Meter Sensitivity;144MHz;83; 59;UHFPOM Power Meter Sensitivity;430MHz;64; 60;ALC1-M ALC;Meter;204; 61;ALC-M ALC;Meter;125; 62;HF1-RV Reverse;ALC;1.8MHz;13; 63;HF2-RV Reverse;ALC;7MHz;11; 64;HF3-RV Reverse;ALC;21MHz;21; 65;50M-RV Reverse;ALC;50MHz;15; 66;VHF-RV Reverse;ALC;144MHz;7; 67;UHF-RV Reverse;ALC;430MHz;28; 68;CW-CAR Carrier;Level;CW;252; 69;AM-CAR Carrier;Level;AM;210; 70;DEV-W;FM;Modulation;211 71;DEV-N;FM;Modulation;103; 72;M-MTR;FM;Modulation;188; 73;CTCSS;FM;Modulation;151; http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 9 Hi ladies and gents, The FT-817 is a lovely rig, isn´t it? This is a radio one must have - without special reasons. But anyway, when I got the radio one week ago, I started to test it against exciting others. (like TS-870).
  • Page 10 I looked into the ALC mod you posted for the FT817. You changed a 1uF cap to 470uF I entered the circuit into a simulator and got these waveforms. It appears this mod lengthens the ALC "release time". Check out the simulate ALC output voltage waveforms below http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 11 VHF MOSFET to provide gain control. I set up V1 to simulate a 500mS pulse coming from the forward detector. It repeats every 2 seconds The ALC levels at the MOSFET gate are; 4V for maximum gain and 1V sets minimum gain. http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 12 The picture should help to locate the small resistor. The new one is a traditional one ( I had no SMD- resistor ) It looks bad, but it works fine..by the way the new microphone is very sensitive now...go down to values of 20 (original is 50 !) in the setup of the FT-817 specially in SSB. http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 13 Pagina 13 Good luck ! Andreas DL6EAT AGC modification for FT-817 Author: Andreas Duessler Hi YL´s XYL´s and OM´s, Regarding the AGC (RX) of the FT817 I got some questions from some users. The dynamic of the AGC- regulation isn´t really nice researched. If you use the rig specially on 40m and/or 80m where often high signal strenths are present, the RX sounds like the AGC is switched completely "off".
  • Page 14 Values over 10uF (470uF) are better, but the S-meter stand still at approx. S6-7 afterwards. It´s not recommended to go over 10uF. Good luck and again: be carefull!!! Thanks for reading this and I apologize for the picture, which is not exactly focused. (I saw it too late...) http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 15 Pagina 15 Andreas DL6EAT HF Clipper für Einbau in das Handmikrofon des Yaesu FT-817 Author: Joachim Münch DF4ZS Joachim Münch DF4ZS - 7 Dezember 2001 Vorweg, für Schäden die durch den Umbau verursacht werden übernehme ich keine Haftung. Bei mir und einigen OM´s funktioniert der HF-Clipper bestens und bringt so an die 10 dB.
  • Page 16 Abdeckung kann aufgeschraubt werden. Möchte man Clippgrad und Sprache nach eigenen Empfinden einstellen, lokalisiert man die einzelnen Trimmer und justiert diese. Die ALC des FT-817 ist dabei zu beachten. Die Tendenz der Trimmer jeweils wenn diese nach rechts gedreht werden. BFO- Trimmer erhöht dessen Frequenz ( <...
  • Page 17 KB2LJJ Radio Mods Database and Manuals Pagina 17 Zweitonsignal ungeclippt - stark geclippt - Eintonsignal http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 18 Besonderheiten des HF-Clippers für den FT-817 ein. Bei der Konstruktion war zu überlegen ob ex- oder intern. Extern wäre kein Problem gewesen, hätte aber den Sinn und Zweck des FT-817 verfremdet. Es kam also nur eine interne Ausführung in Betracht, die dem Charakter des Transceivers entgegenkommt.
  • Page 19 Subject: FT-817 HF-Clipper built in microphone Hi Hams, I have tried it, and it is far the best I have tried to increase the talk-power of the FT-817. Loud and clear. With an external PA of 300W, it works also fine, as long as there are no standing waves on the coax.
  • Page 20 KB2LJJ Radio Mods Database and Manuals Pagina 20 Attached Detached Yaesu FT-817 CW Filter Installation Author: Dave Fifield, AD6A By Dave Fifield, AD6A http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 21 The wire from the speaker is pretty short but there's just enough room to get to the connector to undo it if you tilt the top cover up at the rear. The filter goes in the space at the front of the board. http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 22 Here's the filter correctly oriented ready to be put in. Note that the 3 pin connector is on the LHS and the 4 pin connector on the RHS. The filter is installed writing side up as shown. http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 23 USB/LSB/CW/CWR etc., the rig seems to be stuck in SSB filter mode. There's one more thing you have to do to get the CW filter working. Check out page 14 of your FT-817 Operating Manual - number 7 at the bottom right of the page you will see the "C-Key" setting for "NAR".
  • Page 24 It's late, so I tried it on the bottom end of 40m - sounds REAL NICE!! Folks, if you are going to do CW seriously with the FT-817, you will simply HAVE to get the YF-122C filter option. It's a must have IMO.
  • Page 25 KB2LJJ Radio Mods Database and Manuals Pagina 25 I went searching for other mod space - there's some between the front panel assembly and the diecast chassis..and some more between the CW filter and the chassis in the top compartment: http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 26 The general concensus is that this improves the audio quality of the RX. A quick test I did to move it shows that it DOES sound better mounted like this. http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 27 Email me if you have comments or questions This modification can also be found on http://www.cooltechstuff.com/FT817_CWfilterinstall.html FT-817 RX-LED disconnect Author: AA1QG By removing a resistor on the back of the front panel you can save approx. 12-15 mA on receive. On long backpacking expeditions this may result in significant power savings.
  • Page 28 KB2LJJ Radio Mods Database and Manuals Pagina 28 before. FT-817 TX frequency / Region setting These pictures describe the region settings given by the various internal jumper positions in this radio's front panel. For example, this makes it possible to expand the Tx coverage of a European FT817 so it will work if travelling to the USA but to retain the correct Euro repeater shifts.
  • Page 29 KB2LJJ Radio Mods Database and Manuals Pagina 29 Et enkelt front løft til FT-817 Author: LA9MGA Av LA9MGA, Helge Karlsen. Bilder, LA2PIA, Petter Sørensen. http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 30 Pagina 30 FT-817 er ikke enkel å betjene når den ligger på et bord. Det er umulig å få fingeren under for å dreie på vfo knappen. Etter å ha sett på publiserte artikler hvordan de har prøvd å løse dette problemet, bl.a AR 2, 2002, valgte jeg selv å...
  • Page 31 KB2LJJ Radio Mods Database and Manuals Pagina 31 Front løftet i bruk. Når du drar plastproppen opp, er det meste gjemt bort. http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 32 KB2LJJ Radio Mods Database and Manuals Pagina 32 Dette er plastdelene FT-817 Mod. 2 Collins Filter (CW AND SSB) Author: Lutz, W4/DH7LK Risk: You will loose the warranty. Fun: You will have a fantastic rig with a 2.4 Khz Collins filter in SSB transmit and receive path and a 500Hz CW filter in the Narrow position for CW and DIG (PACTOR, PSK31 etc.
  • Page 33 KB2LJJ Radio Mods Database and Manuals Pagina 33 The FT-817 comes with only one slot for additional filters but there is sufficient space to mount both SSB and CW if you remove the PCBs of the filters and wire them directly to the MAIN UNIT.
  • Page 34 KB2LJJ Radio Mods Database and Manuals Pagina 34 Original SSB Ceramic Filter removed: Position of SSB filter: http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 35 KB2LJJ Radio Mods Database and Manuals Pagina 35 SSB filter wired: CW filter wired: http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 36 There are suggestions to set the FT817 to get the maximum possible output of 15 Watts from an FT817, but I consider this similar to believing in Santa Claus – do you really believe that Yaesu would over design the Filters, Relays and Power feeds to cope with THREE times as much power as they advertise the unit for ? The 15 watt mod also totally disables the DC current limiting.
  • Page 37 I think we have to strike the balance of getting 10 watt output and risk of blown finals. Increasing the output power is definitely not an original design parameter. Otherwise, Yaesu should promote the rig as 10 watt output and sell for higher price.
  • Page 38 Yaesu FT-817 CAT interface Author: Edwin - PE1PWF Dit interface is bedoeld om een Yaesu FT-817 te besturen via de PC. Het kan worden gebruikt om modes, frequenties of geheugenkanalen aan te passen met verschillende programma's zoals: MixW, RATS FT-817, TRX Manager, FT-basic enz.

  • Page 39: English Translation

    MAX232 are better for making a nice PCB. I hope I can present a second PCB within a few weeks that can fit in a 9 pin sub-d connector, http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 40 I use IrfanView (version 3.17) for printing my PCB-layout scaled x 1.05 gives me the correct size. (I will try to use PDF file later, or some other format) You should be able to find IrfanView on Homepage IrfanView. 73, Edwin / PE1PWF http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 41 KB2LJJ Radio Mods Database and Manuals Pagina 41 http://www.kb2ljj.com/data/yaesu/ft-817.htm 03/05/2008 08.24.31...
  • Page 42 (available from Yaesu, or you can send the rig to them and wait for them to repair it). Yaesu will fix the rig for free if it is under warrantee. If not you will have to order the fix part (the part# is in the attached tiff file), don't worry it only costs .22 USD (22 US cents).
  • Page 43 KB2LJJ Radio Mods Database and Manuals Pagina 43 This is not a lot specific problem (according to Yaesu), and rigs as recent as a year 2001 lot 44 rig has the problem (A rig produced around the end of 2001).