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Icom F1721 Transmitting Issue

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BlueDevil

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May 5, 2010
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722
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WA
I have an Icom F1721 that is in very nice, like new condition. It is having an issue when transmitting. On some frequencies it will transmit fine at the full 50watts. On other frequencies it will transmit for about 1 second or maybe even less and then immediately stops.

The radio stays on when this is occurring. The display does not dim when transmitting. This has occurred while in the vehicle and also hooked up to my bench power supply.

Any thoughts or suggestions or is it time to send it into Icom?
 

12dbsinad

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Joined
Mar 15, 2010
Messages
1,077
If my memory serves me correctly there was an issue like you describe in a batch of units manufactured around 2009.

We sent these in for warranty repair since units where new. We had 1721D P25 models but same radio.

I do believe when this would happen the issue would cause the VCO to unlock and flash the display while holding down the mic (after TX shut off) then return to normal when unkeyed. This would only happen on certain frequencies.

It's been awhile but hope this helps...
 
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