I ran into this exact issue caused by cable connections, specifically
the Y-cable that didn't allow the connector screws to join the cables.
Getting the Y-box from N6TV solved the loose cable problem.
73, Dennis NJ6G
On 10/30/2019 13:26, Jack Brindle via Elecraft wrote:
Jim;
Check the AUXIO cable to make sure it connects to the K3S and the KPA500 (or
KAT500) properly. This sounds like the Band1 signal may not be making proper
contact.
The KPA500 watches the K3S’s Band signals for its band selection when RADIO is
set to K3. If doesn’t see the combination for a band, then it will select the
wrong band.
It is possible that the K3 is outputting transverter band info, but since it
changes with HF band, it doesn’t seem likely. The cable issue seems most likely
at present. You might
remove the connectors and make sure no pins are bent and that the pins are
making proper contact.
73!
Jack, W6FB
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