[Elecraft] KPA500 power output starts out low, then goes up

[Barthold Lichtenbelt]

Hi All,

 

Maybe you can help with something that is baffling me. My KPA500 doesn't go
to full output until I have spoken my callsign (when trying to get through a
pileup) a few times. It starts off with 100 or so watts, and after a few
iterations rises to the full 500W output. I see this both on the KPA500 LED
bar, as well as on the P3 PEP output monitored by P3TXMON.  My full setup is
K3S+KPA500+KAT500+P3+P3TXMON. All devices run the latest released firmware.

 

Any thoughts much appreciated!

 

Barthold

AD0RM