[Elecraft] K3/KPA-1500 - Unexpected shift in per-band power

[Victor Rosenthal 4X6GP]

Pete,
You have to set PWR SET in the CONFIG menu to PER BAND.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
On 30-Mar-2022 17:17, Pete Smith N4ZR wrote:
> For some time now, I've been noticing that after operating on 15M, my 
> output power on 80  with my K3/KPA-1500 would have to be turned down 
> substantially to get within legal limits.  Today I decided to test this, 
> using a dummy load.  I tweaked my input power on 15M to about 1450 
> watts, and then went down to 80, where my output power hit over 1800 
> watts with the Power control on the K3 unchanged.  I turned down my K3 
> to get 1450 watts out on 80, and went back to 15.  Output power showed 
> just over 1000 watts. Tweaked the K3's power setting to restore 15M 
> output power to 1450 watts and went back to 80.  KPA1500 again showing 
> 1800 watts out.
> 
> I had thought that K3 power settings on each band were independently 
> stored and returned to the stored value for a given band when changing 
> to that band, but this evidence suggests that is not true.  I don't 
> think I'm overlooking something antenna-specific, since I was using the 
> same dummy load on both bands, and I've noticed this phenomenon when 
> using real antennas too.
>