[Elecraft] Plug wiring for Model CMOS-4 Keyer

[Rob Locher W7GH]

Hi Gary,

Sorry for the delayed response to your question.  I was away from email  
for a long weekend (hooray!).  I don't have a KX1, so I don't know  
exactly, but I do have a CMOS-4 (and an Elecraft K2).  The CMOS-4 uses an  
RCA jack for the key output.  To interface my K2 to my CMOS-4 keyer, I  
took an RCA patch cable, cut off the RCA connector on the end, and  
soldered a 1/8" stereo plug instead.  Of course the cable ground shield  
should be connected to the RCA ground shield on one end and the stereo  
ground shield on the other.  I can't recall if the inner connector from  
the RCA plug should be connected to the tip or the ring of the stereo  
plug, but I suspect it doesn't matter.

73,
- Rob W7GH
K2 #5004



On Sat, 25 Mar 2006 14:03:27 -0800, Gary H Evans  
<gevans2650 at sbcglobal.net> wrote:

> I would like to use my CMOS-4 keyer with my KX1. Can anyone help with  
> the wiring of the cable between the keyer and the KX1? Thanks...Gary -  
> AA6R