[Elecraft] K3 RF-out spikes, was: K3 SSB Power Control and ALC Metering

[dj7mgq at muenchen-mail.de]

Hallo Graham,

thank you for looking at this with a scope.

Did you try changing the power level while you were in SSB at lowish  
power, e.g. from 30W to 35W? This (at least it used to) usually caused  
my K3 to settle in on a power level which tended to be between 3db and  
10dB lower than requested. The effect was stronger at lowish power  
levels, e.g. 30W, than at higher levels, e.g. 90W.

Did you change the power level request while in the RX and/or TX states?

My work around, was to set up the power level in CW (or TUNE) and then  
not touch the PWR knob while in SSB.

The more recent firmware versions have improved quite a bit, but the  
effect never really disappeared totally. This being said, I haven't  
had a chance to test the very newest firmware yet.

vy 73 de toby
-- 
DD5FZ (ex 4n6fz, dj7mgq, dg5mgq, dd5fz)
K2 #885, K2/100 #3248, K3/100 #67