Icom IC-765 (IC 765 IC765) transceiver mods reviews software and diagrams

   
 
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28 March 2024, 10:55 UTC 


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Icom IC-765 (IC 765 IC765)
IC-765
Programming interface schematics for Icom:
Programming software for Icom IC-765 (IC 765 IC765) :
PDF User Manual for Icom IC-765 (IC 765 IC765) :Icom IC-765 Instruction Manual
PDF Adjusments Procedures Manual with schematics for Icom IC-765 (IC 765 IC765) :
Schematics for Icom IC-765 (IC 765 IC765) :

Mods for Icom IC-765 (IC 765 IC765) :
    Icom IC-765 (IC 765 IC765) Replace 455 SSB filter w fl 44a very nice selectivity
    Icom IC-765 (IC 765 IC765) Extended TX Mod
    Icom IC-765 (IC 765 IC765) improved monitor volume
    Icom IC-765 (IC 765 IC765) Passband tuning mod
    Icom IC-765 (IC 765 IC765) Mod to prevent ant sw unit failure
    Icom IC-765 (IC 765 IC765) Adjustment the motors control unit

Icom IC-765 (IC 765 IC765) technical specifications :  Icom IC-765 (IC 765 IC765) technical specifications



Icom IC-765 (IC 765 IC765) Adjustment the motors control unit

The feedback circuit that controls the tuning motors becomes sensitive after a few months of ageing. It requires a one time adjustement to correct.
  1. Remove top cover and locate the antenna tuner board.

  2. Locate r5 and R10 and set them to the center of their range.

  3. Set radio as follows:
    Tuner on
    Frequency 14.100 MHz
    Mode RTTY

  4. After transmit is engaged for 30 seconds,

  5. Adjust each control (R5 and R10) so neither motor tunes while changing from SSB to RTTY and back to SSB.
    Note:
    R5 (right) controls right motor and R10 (left) controls left motor.

  6. Repeat this adjustment to verify proper operation and then check on all other bands.

  7. Reinstall top cover and return to operation.

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