[Elecraft] K3 and QSK

[Carl Clawson]

Let us be clear. There are two questions in this discussion.

#1. Can you use external PTT to put the rig in CW transmit mode, bypassing
both the full and semi QSK? This has been resoundly answered "Yes!"

#2. Can you arrange for the CW key to be disabled when the foot switch is
NOT pressed? I don't believe I've heard this answered clearly.

#2 is exceedingly important. This was K1EP's original point when he started
this thread. Here's another scenario that shows why:

Suppose my foot switch actuates relays that switch between separate Rx and
Tx antennas. If I can transmit by accidentally bumping the key, power will
go to the receive antenna. Now imagine that I have a receive antenna with an
external preamp. Poof! Preamp smoked. I would have to route my key through
yet another relay if I could not have Tx disabled with no PTT.

73, Carl WS7L