Thanks for the advice. Thankfully, there was a very simple solution.
Although I had disconnected the CW paddle, as well as a number of other
cables, I couldn't crane my head around enough to notice that I'd left a
1/4"-to-1/8" adapter in the paddle jack on the back panel, which
apparently had become partially unseated. When that was fixed, the
problem went away.
73,
Frank K6FOD
On 6/25/19 6:51 AM, Jack Brindle wrote:
This sounds like the K3S is getting commands fed to it when perhaps it
shouldn’t be. With that in mind, try:
1) Check the front panel to see if any keys are stuck.
2) Disconnect the serial port then power up the radio.
3) If the above don’t work, reset the parameters. This is described on page 72
of the K3S Owner’s Manual, Rev A1.
And if all that fails, try giving tech support a call.
73!
Jack Brindle, W6FB
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