Icom IC-725 (IC 725 IC725) transceiver mods reviews software and diagrams

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Icom IC-725 (IC 725 IC725)

Programming interface schematics for Icom:
Programming software for Icom IC-725 (IC 725 IC725) :
PDF User Manual for Icom IC-725 (IC 725 IC725) :Icom IC-725 Instruction Manual
PDF Adjusments Procedures Manual with schematics for Icom IC-725 (IC 725 IC725) :
Schematics for Icom IC-725 (IC 725 IC725) :

Mods for Icom Icom IC-725 (IC 725 IC725) :
    Icom IC-725 (IC 725 IC725) Enable preamp below 1.5 mhz
    Icom IC-725 (IC 725 IC725) Enable noise blanker in all modes
    Icom IC-725 (IC 725 IC725) post 1998 Version
    Icom IC-725 (IC 725 IC725) MARS modifications

Icom IC-725 (IC 725 IC725) technical specifications : Icom IC-725 (IC 725 IC725) technical specifications

Icom IC-725 (IC 725 IC725) Enable preamp below 1.5 mhz

Remove bottom cover.
Locate Q12 on Main Unit. 1/3 way from left side of board. Q12 is the transistor that bypasses the preamp below 1.5 MHz to avoid overload when listening to AM Broadcast Stations.
Clip the lead of Q12 closest the front of the radio.
That's it, the preamp will now work below 1.5 MHz!

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PMR446
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