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Thread: icom ic-735

  1. #1
    runner102 is offline Mauldropper DX Numbers: 102 Home Channel: 1
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    Default icom ic-735

    Hi there I recently picked up a icom ic-735 and it transmits just fine but it has very low receive I can hear if I key a radio right next to but cant even hear my friend a mile away I was just carouse if anyone has any idea what the problem might be?

  2. #2
    pole_pig's Avatar
    pole_pig is offline Laser Safety Officer DX Numbers: 1138 Home Channel: 19
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    if it's dirty/smoked/roached.. or just old and not used in a while.

    check the RF gain and other controls for dirtiness. run them back and forth and see if it does anything.
    Use something good like de-ox-id to clean them. sparingly! only a little shot is needed. It is costly but very good.
    https://www.altex.com/GC-Electronics...6-P141839.aspx

    The manual is online, you can troubleshoot or provide more info.
    Electronic Innovations In Action - Setting Energy Traps in the Forbidden Band

  3. #3
    4-400's Avatar
    4-400 is online now superlaxative shitmixer DX Numbers: KZ01 Home Channel: 144.200 usb
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    Default

    if it has no jumper
    then that will be why
    ..that jumper is the receive connection for a external transvera if it is not as it is in that pic then you wil have no rx

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    also ic735 has a known issue of solder joints at he antenna socket going bad ..the stupidly short jumper when you put the pl259 in to the so2399 can move on the board and break connection resulting in loss of tx/rx input/output..i know i had that issue with mine and there was a service bulletin for that many years ago

    actually good radio for its time as it has triple conversion receive which even today is only in high dollar radios

    also look ar the rca sockets that the transvera coax jumper are actually making contact on the board..if it has been bashed on the back the rca pin contact may be broken on the pcb trace ..another known issue ..no contact no rx

    the rfgain if not working wil result in full scale deflection of the "smeter" on receive btw PP really rhy should call it by its real name a IF gain
    Quote Originally Posted by -=PEAKABOO=- View Post
    I detect shenanigans somewhere in this thread and my eyes hurt.

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  5. #4
    runner102 is offline Mauldropper DX Numbers: 102 Home Channel: 1
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    thanks 4-400 I took a look and the board was cracked on the rx in a little solder and good as new I appreciate the help

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    pole_pig's Avatar
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    Quote Originally Posted by 4-400 View Post

    the rfgain if not working wil result in full scale deflection of the "smeter" on receive btw PP really rhy should call it by its real name a IF gain
    only cause it says RF on the front panel so to avoid confusion unaware of questioner's knowledge of the radio. I have one of those and they make a very funny action on AM.
    Electronic Innovations In Action - Setting Energy Traps in the Forbidden Band

  8. #6
    mrsuburban's Avatar
    mrsuburban is online now 16..... One Fist.... DX Numbers: 4-10 Home Channel: 26
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    "That story ends with defeat. They needed to use ssb to communicate." HiDef 2017

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    I AM THE RDX AFRO-AMERICAN
    THEY CALL ME LITTLE HECTOR, THE HUMAN STOOL SOFTENER....... AN ARMCHAIR ANAL ENTHUSIAST


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    Sorry, not sorry.


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    Get me a sandwich before you get a slap...

    I AM THE RDX AFRO-AMERICAN
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  13. #10
    pole_pig's Avatar
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    Quote Originally Posted by mrsuburban View Post
    Eaton "Detroit Tru-Trac" in the pickup truck stopped all on-road traction issues. Diffs are not just for offroad.
    Electronic Innovations In Action - Setting Energy Traps in the Forbidden Band

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