Yes, a standard serial cable plugged into the AUX IO connector will
cause "strange happenings".
73,
Don W3FPR
On 1/6/2021 2:27 AM, [email protected] wrote:
Hi Don,
I think I tracked the problem and I would like to document it for
future generations :).
I noticed that during SKCC events I don’t have the issue. In the
following contest instead of using internal keyer though serial port
I switched to an external keyer and sure enough the issue did not
surface. That brought me to a serial port cable that was provided by
the previous owner of the K2. I found that the cable was just a
standard serial extension cable. I quickly made a makeshift serial per
Elecraft recommendation and was not able reproduce the problem with
the correct cable. I ran the K2 in Winter RAC and it worked as
intended. I am happy that I did not fry a chip with the wrong cable
but apparently wrong cabling may introduce a quite strange side effect
that makes the chip work incorrectly when it is under the temperature
pressure.
73, Arkady/NU6N
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