Hi, Bret!

I've sometimes found a cable with a stereo plug already formed onto one end
(a "stereo patch cable") and cut the other end off and wire the three
connectors to the paddle.

There are some more involved commercial offerings that have three spade or
ring lugs, such as Vibroplex's CP3, Bencher's EZ-1, or the MFJ-5166.  You
can make these up from the piece parts, too.  DX Engineering and Ham Radio
Outlet advertise all of these, Gigaparts advertises a couple of them.

The shield goes to the common connector of the paddle, which is typically
the center of the three connectors.

The other two wires, which correspond to tip and ring of the 1/4" plug, can
be connected to either of the other two posts on the paddle.  Whether you
want the left paddle to be dots or dashes is a matter of preference, but
most right-handed people I know use the left paddle (the one you touch with
a thumb) to send dots and the right paddle send dashes.  I've seen
left-handed operators operate a paddle in either configuration, some can do
both... 

If you wire it wrong initially, you can swap the tip & ring with a K3 menu,
or more easily, swap the two wires at the paddle.

The 1/4" plug goes into the K3 back panel socket labeled "Paddle", on the
bottom row.

Have fun in the CW Academy!  Your K8RA P4 looks like a very attractive
paddle.

73 de Dick, K6KR


-----Original Message-----
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of MaverickNH
Sent: Saturday, August 12, 2017 16:30
To: elecraft@mailman.qth.net
Subject: [Elecraft] K8RA P4 Key to K3S?

I'm signed up for CW Academy Sept-Oct and picked up a used K8RA P4 Key
http://www.k8ra.com/product-p/p-4.htm It has three thumbscrew wire
connectors on top at the back. How do I connect that to my K3S?

Bret/N4SRN



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