Icom IC-756 (IC 756 IC756) transceiver mods reviews software and diagrams

   
 
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04 May 2024, 2:01 UTC 


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Icom IC-756 (IC 756 IC756)
IC-756
Programming interface schematics for Icom:
Programming software for Icom IC-756 (IC 756 IC756) :
PDF User Manual for Icom IC-756 (IC 756 IC756) :Icom IC-756 Instruction Manual
PDF Adjusments Procedures Manual with schematics for Icom IC-756 (IC 756 IC756) :
Schematics for Icom IC-756 (IC 756 IC756) :

Mods for Icom IC-756 (IC 756 IC756) :
    Icom IC-756 (IC 756 IC756) filter modification
    Icom IC-756 (IC 756 IC756) wide band modulation
    Icom IC-756 (IC 756 IC756) Spectrum Scope Adjustments
    Icom IC-756 (IC 756 IC756) ACC1 Audio Output Increase
    Icom IC-756 (IC 756 IC756) General Coverage H.F. TX Mod (1.6 - 30.0MHz)
    Icom IC-756 (IC 756 IC756) Expand TX Frequency

Icom IC-756 (IC 756 IC756) technical specifications :  Icom IC-756 (IC 756 IC756) technical specifications



Icom IC-756 (IC 756 IC756) General Coverage H.F. TX Mod (1.6 - 30.0MHz)

VHF remains 50.0 - 54MHz TX only.

Modification summary:

Remove the W805 jumper chip on MAIN unit by soldering iron.

Modification Procedure:

  1. Remove bottom cover of IC-756.

  2. On MAIN unit board you will see I.F. filters and daughter board (DSP PBA) on the right hand side.

  3. W805 jumper and IC803 chip located under DSP PBA.

  4. Remove DSP PBA (lift up carefully!)

  5. Look for IC803 and line of jumpers (0603 sized SMT links).

  6. Remove W805 jumper - as indicated below.

  7. Re-install DSP PBA

  8. Re-fit bottom cover.
                     ---------------
            [W801] |               |
            [W802] |               |
            [W803] |    IC 803     |
            [W804] |               |
    Remove=>[W805] |     CHIP      |
            [W806] |               |
            [W807]  ---------------
            [W808]