[Elecraft] PA HOT

[Eddy via Elecraft]

I've seen this error before. My K2 (S/N 3500+ with latest firmware updates) had been off, no 12vdc to rig for about 2 months. When I applied DC to the rig and ATU and tried running the auto-tuner I got PA HOT error on the display, this after about 1 minute of warm up!

So, went to the KPA100 manual to check tPA calibration, I discovered it was set two 255 celius, a bit warm for my shack....LOL. Using the Fahrenheit to Celsius formula in the manual, tPA should have read 18 Celsius. So, I adjusted the KPA100 to room temperature and KPA100 has been working FB now.

So, any suggestions why tPA would lose its calibration? By-the-way, CAL CUR is set to 3.5 amps per the manaul.

Thanks for the assistance,

73

ed