Yaesu FT-857 (FT 857 FT857) user and service manual, modifications

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Yaesu FT-857 (FT 857 FT857)

FT-857

Programming interface schematics for Yaesu: programming interface, Yaesu 4 pin plug
Programming software for Yaesu FT-857 (FT 857 FT857) : Yaesu FT-857 soft jump for extended TX
PDF User Manual for Yaesu FT-857 (FT 857 FT857) : Yaesu FT-857 Operating Manual
PDF presentation brochure for Yaesu FT-857 (FT 857 FT857) : Yaesu FT-857 brochure
PDF Service Manual with schematics for Yaesu FT-857 (FT 857 FT857) : Yaesu FT-857 Service Manual, schematics

Mods for Yaesu FT-857 (FT 857 FT857):
   Yaesu FT-857 (FT 857 FT857) low frequency response in SSB
   Yaesu FT-857 (FT 857 FT857) 40m band expansion 7.1 mhz 7.2 mhz transmit
   Yaesu FT-857 (FT 857 FT857) Undocumented Feature
   Yaesu FT-857 (FT 857 FT857) Mic Wiring
   Yaesu FT-857 (FT 857 FT857) Adding drag to FT-857's tuning knob
   Yaesu FT-857 (FT 857 FT857) European FM Settings
   Yaesu FT897/857/817 (FT-897-857-817 FT897/857/817) Jumpers by Software
   Yaesu FT-857 (FT 857 FT857) Second menu
   Yaesu FT-857 (FT 857 FT857) MARS mod
   Yaesu FT-857 (FT 857 FT857) Installing The Options
   Yaesu FT-857 (FT 857 FT857) FM-Squelch Fix

Yaesu FT-857 (FT 857 FT857) technical specifications : Yaesu FT-857 (FT 857 FT857) technical specifications

Yaesu FT-857 (FT 857 FT857) Undocumented Feature

By pressing both Band Buttons (UP & DWN) while starting up, the FT-857 will beep a few times and then displays the following message:

"RELAY CLEANING" and all the relays start working.

This is not mentioned on the user or the service manual.

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