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My icom 706 mk2g powers up, receives, but when i push the mike ,the radio turns off, help

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  • Carlgme Mar 20, 2009

    HI, I was look around the internet and found this and was wounder if a new power supply fixed your problem wih the radio. when I transmit the radio cuts off. i tried cleaning the contacts and on the plug as well as on the mating surfaces on the removable head but none of this worked so can you tell me if the power supply fixed your problem



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I had a similar problem on my 706 MK1. The problem was corroded connections on the white power connector at the rear, When on tx the voltage drop across this connector was great enough to switch the radio off. try cleaning/re-seating this connector


Posted on Oct 16, 2009

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Also, if you haven't yet replaced your power supply, try just running at lower power, or f'r instance 10 watts a.m. and see if it works. That will test all the transmit functions while drawing less current from your supply. If you're patient, you can meter the voltage at the radio's input terminal as you increase power output and see the output power level at which your input voltage drops. But assuming you've got a 20-amp supply that hasn't died, it's likely that you've got a loose or corroded connection, even inside the big Molex plug on the rear of the rig.

Posted on Jan 03, 2010

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Sounds to me like your power supply isn't able supply enough current for the radio when it transmits. The 706 needs 20A to transmit. The radio will cut out as described if it's not getting enough current.

73 de EI5GVB

Posted on Apr 26, 2009

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Hi There,
I think your power supply is not rated high enough, Try using a 20 amp power supply.

Posted on Feb 18, 2009

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1 Answer

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Hi Paul,

The best I can come up with is Try this: join yahoo group Specific to your radio Make/Model, the experts there will help you with useful info and you can download manuals, schematics and software, if available, for your radio and all this is free.

I hope I have been of assistance to you.


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