Thanks, Bonnie. While I'm sure that would solve the problem with the 
hand-held, it only addresses half the issue. When the XYL is in the 
shack (her computer desk is 90 degrees and 4 feet away from mine) I use 
the headset mic so as to cause as little QRM to her while she works (she 
works from home). I guess unless someone tells me that a rotary wafer 
switch won't do the trick for me, I'm going to try to build one.

Tnx es 73
Dave KB3MOW


expeditionradio wrote:
>
> Hi Dave,
>
> Many transceivers have automatic
> muting of the microphone whenever the rear
> panel accessory jack PTT is in use...
> and they do not require external switching
> or modification.
>
> However, some Icom transceivers and other
> brands do not have internal muting of the
> microphone muting when the rear panel
> audio/PTT is enabled.
>
> A simple modification of the Icom HM-36 microphone
> results in the muting of the microphone
> whenever the microphone's PTT button is
> not being pushed. It enables the computer
> to interface via the transceiver's
> rear panel data accessory jack, without
> ambient audio entering via the hot microphone
> during computer audio transmissions.
>
> CLICK HERE TO VIEW THE MOD:
> http://hflink.com/icom/microphone/hm36/ 
> <http://hflink.com/icom/microphone/hm36/>
>
> This mod provides an easy viable solution
> that does not require modification of the
> transceiver itself.
>
> The principles used in this modification
> may be applied to other brands of transceivers
> and microphones.
>
> 73 Bonnie VR2/KQ6XA
>
> > Dave KB3MOW wrote:
> > I'm using the ACC jack on the rear of my IC-746 for
> > digital mode audio from my computer. Convenient,
> > but the downside is that the microphone
> > picks up audio from the room and that also gets
> > transmitted.
> > ... might there be a simpler way to kill the
> > audio from the microphone without going through all this?
>
>  

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