[ICOM] Dualing mic jacks issue

[John Geiger]

Thanks for the information Mike.  I am using the mic jack right now with
VOX so I don't have to use
any PTT switching, which would require a much more elaborate interface, and
a serial port, which
my netbook doesn't have, or a USB connection of some type.  I will keep
your ideas
in mind.

73s John AA5JG

On Fri, Jan 13, 2012 at 1:08 PM, Michael Clarson <mclarson at rcc.com> wrote:

> John: Sounds like the soundcard is loading down the mic.  I know the 706
> MKIIG has a data jack, and you may be able to connect the soundcard there.
> If you can find a PS2 mouse or keyboard, you may be able to use the cable,
> but watch it, as many mice-keyboards do not have all the wires. You might
> also see if you can find a PS2 extension cable, as these had all the wires.
> If you want to keep going in via mic jack, try a resistor in series with
> the soundcard audio. Try 4.7 k and you will have to turn up the soundcard
> gain. You may have to use a different value to get the correct balance.
> Higher for less soundcard and more microphone, lower for more soundcard and
> less microphone. Use the Data jack if you can. That should isolate the two
> audio sources AND, it may bypass some audip processing and give you a
> cleaner RTTY signal. --Mike, WV2ZOW
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