[Elecraft] [K3] Shorting K3 PHONE jack outputs (WAS OT: Stereo to mono adapters)

[Jim Brown]

On 12/3/2010 8:29 AM, James Sarte (K2QI) wrote:
> Just wanted to get some advise before I continue with my experiment.

Two-circuit 1/8-in plugs should NOT be used at the output of the K3. A 
3-circuit plug is needed. Nearly all pre-made patch cables are junk, and 
many are wired wrong for our uses. We are hams. We can MAKE our own 
patch cables, and we can study the schematics to see how to wire them.  
Elecraft schematics are on line. Good quality 1/8-inch connectors are 
made by Neutrik and Switchcraft, and are available on line from good pro 
audio vendors like Full Compass Systems in WI.  I use miniature coax to 
build them (like RG174, etc.)

For part numbers, see http://audiosystemsgroup.com/HamInterfacing.pdf   
There's a table on one of the slides.

73, Jim Brown K9YC