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:
Thanks Don

I tried with my Laptop Soundcard and it decodes signal even -24
So  I guess sound card its ok.....but  when I connect Mic jack to my pc
output (phones) .....it keys my KX3 (TX red led on)......I dont get it!!



--
View this message in context: 
http://elecraft.365791.n2.nabble.com/What-s-best-Soundcard-Interface-for-KX3-tp7616157p7616181.html
Sent from the Elecraft mailing list archive at Nabble.com.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to w3...@embarqmail.com


______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Reply via email to