[Elecraft] K3s/KPA500 communication issue?

[Mike Dodd]

Thanks to all who offered suggestions. Let me touch on some:

* CONFIG:PWR SET is PEr bAnd - Was and is.

* Reload firmware - Done; no change.

* TX GAIN CAL on the K3 - Not yet; will look into this.

* Plug/replug cables - On the to-do list.

* Other software sending commands - The problem has occurred when no 
other software is running.

* Ks LCD confirms KPA STBY/OPER change - Yes, but often the K3 PWR is 
set to 10W-12W after the KPA switches to STBY, which is the normal drive 
power to the KPA. I.e., if I hit send a dash, I get 10W output to the 
antenna.

* KPA fault log - Indicates high SWR.

My antenna has had some issues recently, and I am still working on that, 
so the KPA fault log is definitely relevant. I have connected my dummy 
load to the PL-259 that connects to the antenna's balun, and sent 500W 
to it. No SWR problems, but I will do this again before digging into the 
balun.

So there are some things I still need to check. But first I want to try 
getting the antenna working right.

Thanks gain.

73, Mike N4CF