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Extended tx/rx on yaesu ft900at - Yaesu Ft-900/at Ham Radio

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6ya6ya
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Posted on Jan 02, 2017

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vrc_tech
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SOURCE: VX-1 Service Manual

this address should help you out http://www.ham.dmz.ro/yaesu/vx-1r-ext-mic-diagrams.php
as for the service manual you will have to order that from yaesu or see if the local Ham radio sevice shop has an extra one they will sell.

Posted on Aug 21, 2008

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1 Answer

Yaesu 857D very poor audio out on SSB.


Dbl check your swr in am mode.. Ch your ssb power and mic gain default is 50 on both on hf .. If you use the mh-59 you will need to reduce the mic gain to 35 and it needs to be set for remote mic in the menu. Also the ssb needs to be set 2.5k wide with the ssb carrier zeroed both tx and rx

Apr 29, 2016 | Yaesu FT-857D transceiver

1 Answer

Yeasu FT990 Gone Deaf


This could be many things but a good place to look is the TX/RX and ATTENUATOR relays. These are problem areas in a lot of radios. This is a complicated radio and if you need to ask this question I would suggest you find someone that knows how to work on these. It will require a fair bit of skill to find the problem and replace the parts. The radio has a lot of surface mount components which are difficult to work with without causing more, and often, expensive damage.

Mar 29, 2016 | Yaesu FT-990 DC Transceiver

1 Answer

My 857 receives fine, but when I key the mic it turns off. The 857 works fine on HF both receiving and transmitting.


I would have a look at the FT-857's extended service menu by holding in A, B, C buttons and pressing power button for a couple seconds. The default setttings are on the mods.dk website. Should also ensure regular menu settings are correct/appropriate. I can tell you that it is possible to change extended menu settings by getting RFI into radio. Also, although unlikely, it sounds like you could inadvertently have done a write to the radio's EEPROM, which can be determined by using a program such as Ham Radio Deluxe, a CAT cable, and procedures also posted on mods.dk website under how to open radio up for 60m, ext tx/rx, without any hardware mods. As to whether you can do all this while still mounted mobile,,,,,maybe with a laptop? Good luck, Link, WV4I....

Oct 22, 2013 | Yaesu FT-857D transceiver

1 Answer

Yaesu ft-950


There are numerous possibilities. You really need to go through the steps in the manual very carefully. Some of the possible issues:
1. Cable wired incorrectly - tx/rx switched, etc
2. Communication rate set wrong on computer (or different from radio).
3. CAT not enabled on radio
4. Wrong version of CAT software.

Oct 03, 2013 | Radio Communications

1 Answer

Yaesu ft290r


I'm not familiar with the radio itself, but it seems from the symptoms that the audio processor/stage is the only common problem i.e: audio does not work. Do you have a schematic for the unit? If so, I would follow the DC path to the audio stage and troubleshoot in that area. The other stage that can be suspected is the regulator stage. Hope it helps a bit.

Aug 24, 2013 | Vertex Radio Communications

1 Answer

Cannot send or receive a fax. I can hear a click when I hit tone and that?s it. It worked before but after I fixed error 6502 nothing.


(2) Service error codes
on.
- Logic board
#001 TX Document jam
#003 TX / RX Document is too long, or page time-over
#005 TX / RX Initial identification (T0 / T1) time-over
#009 RX Recording paper jam, or no recording paper
#012 TX No recording paper at the receiving machine
#017 TX Redial time-over, but no DT detected
#018 TX Auto dialing transmission error, or redial time-over
#022 TX Call failed (no dial registration)
#037 RX Memory overflow at reception of an image
#085 TX No color fax function supported in the receiving machine
#099 TX / RX Transmission terminated mid-way by pressing the Stop/Reset button
#995 TX / RX During TX (sending): Memory transmission reservation cancelled
During RX (receiving): Image data received in the memory cleared
Error code TX / RX Meaning
##100 TX Re-transmission of the procedure signal has been attempted the specified number of times, but failed.
##101 TX / RX Sender's modem speed does not match the receiving machine.
##102 TX Fallback is not available.
##103 RX EOL has not been detected for 5 seconds (or 15 seconds in CBT).
##104 TX RTN or PIN has been received.
##106 RX The procedure signal has been expected for 6 seconds, but not received.
##107 RX Fallback is not available at the sending machine.
##109 TX After DCS transmission, a signal other than DIS, DTC, FTT, CFR, or CRP has been received, and re-transmission of the
procedure signal has been attempted the specified number of times but failed.
##111 TX / RX Memory error
##114 RX RTN has been received.
##200 RX A carrier has not been detected for 5 seconds during image reception.
##201 TX / RX DCN has been received in a method other than the binary procedure.
##204 TX DTC has been received even when there is no sending data.
##220 TX / RX System error (main program hang-up)
##224 TX / RX An error has occurred in the procedure signal in G3 transmission.
##226 TX / RX The stack pointer has shifted from the RAM area.
##229 RX The recording area has been locked for 1 minute.
##232 TX The encoder control unit has malfunctioned.
##237 RX The decoder control unit has malfunctioned.
##238 RX The print control unit has malfunctioned.
##261 TX / RX A system error has occurred between the modem and the system control

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2 Answers

Yaesu FT-26 I got a Yaesu FT-26 that is used. The Problem by it is that its frequence between 140.000 and 148.000, i cant get lower or higher than, I cant even send or recieve anything!!! even when i press...


Same problem for me also blocking on the tape amateur 144/148 MHz not of emission nor of green reception led does not ignite malgres the modifs. Have a solution thank you

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1 Answer

VX-1 Service Manual


this address should help you out http://www.ham.dmz.ro/yaesu/vx-1r-ext-mic-diagrams.php
as for the service manual you will have to order that from yaesu or see if the local Ham radio sevice shop has an extra one they will sell.

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