[Elecraft] Digital Mode Interface for the KX3 for WSJT modes

[Don Wilhelm]

Ed, Lance,

I have constructed my digital interface, but have not tried it yet.
The basis was the interface designed by Skip Teller KH6TY "Classic 
Universal Soundcard Interface" from QST July 2010.  That interface is 
small and fits into the housing of a large DB-9 backshell.
I purchased some 3 circuit right angle 3.5mm plugs and routed the 
headphone connection to the left channel (tip) of the headphone output, 
and wired both the audio and PTT to the microphone connector.

The drawback for this particular interface is that is has to be used on 
a serial port (or serial to USB adapter) to use the PTT function.  It 
could be left disconnected and use VOX in the KX3 - it gives you the 
benefit for both.

Skip later published an interface that used the audio to generate PTT 
(instead of from the serial port), but that is not much different than 
using VOX in the radio (although some radios (like the Yaesu FT-847 do 
not have VOX).

I do not know if Skip still has boards or kits available.

73,
Don W3FPR

On 7/12/2012 1:55 PM, Edward R. Cole wrote:
> Lance,
>
> Still on my "to-do"list, but today is devoted to finishing my
> semi-annual shack clean-up and working up a presentation to demo the
> KX3 this Saturday at our local hamfest (which I am chairman).  Oh,
> and somehow dig out all the stuff I wanted to "unload" at the
> flea-market session.  Only have today as I work tomorrow.
>