Posted by
Don Wilhelm-4 on
Apr 10, 2016; 11:42pm
URL: http://elecraft.85.s1.nabble.com/What-s-best-Soundcard-Interface-for-KX3-tp7616157p7616186.html
George,
You are making progress, receive is good - only a little more to go to
handle the transmit situation.
The cause is because the ring contact on the microphone jack is PTT, and
the unused channel (right) of the soundcard has a sufficiently low
impedance (resistance) to trigger the PTT. If you are set up to use
VOX, you do not need PTT.
There are 2 solutions (I think the 2nd one is the best, but that is just
my opinion):
1.) Enter the menu and set MIC BTN to OFF.
Since that requires you to turn MIC BTN to ON when going back to SSB
with the MH3 microphone, I suggest #2.
2.) Build an adapter which has no connection to the 1st ring on the
microphone plug. In other words, connect the soundcard stereo plug to
only the shell and tip of another jack and use that adapter between your
soundcard audio out cable and the KX3 microphone jack. If you want to
use PTT, you can bring out the ring contact to operate from whatever
source you are deriving the PTT signal.
73,
Don W3FPR
On 4/10/2016 6:18 PM, George_yv5wz wrote:
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