[Elecraft] KPA 500 Erratic Band Changes

[Jack Brindle]

Dave;

Do you get the Operate message on the K3 display before the band change? 
Might the K3 be transmitting when you hit the OPER button on the KPA?

Use the KPA Utility to get a fast log file and send it my way. I am very interested in seeing the KPA’s current settings. I’m really puzzled at what might be going on.

73,
Jack, W6FB


> On Mar 26, 2023, at 10:09 PM, Dave <n8ag at comcast.net> wrote:
> 
> K3 – KAT500 – KPA500 setup using AUX cables (2) to interconnect. All 3 devices seem to be talking to each other just fine but when I go from STBY to OPER on the amp, it changes bands and changes the band on the K3. It most often goes to 28Mhz but not every time. I checked both cables for continuity before connecting everything and they look fine. Has anyone seen anything similar to this or experienced the same thing? Tnx es 73, Dave N8AG
> 
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