[Elecraft] KPA-1500 input too high

[rocketnj at gmail.com]

Hi All,

 

KPA-1500 s/n 423

 

Operating 80 meter SSB running 20 watts drive with tuner engaged for about
1240 watts out PEP. Remote app shows maximum power handling of 1620 watts.

Out of nowhere I got an input power too high alarm @ 191 watts! The radio is
capable of 100 watts out max and verified is set to 20 watts.

 

Set tune power to 10 watts.

Meter in amp during standby reads 10 watts. 

Switch to operate and immediately get input power too high alarm @ 91 watts.

 

Switch to 20 meters (resonant antenna). No issue - 10 watts tune is
approximately 400 watts out with no error.

 

Any ideas?

 

Dave wo2x