[Elecraft] K3 power output on SSB

[Brendan Minish]

An undershoot of ~ 20% for the first few seconds of transmission on a
new frequency might be an irritant but an overshoot or aggressive fast
acting ALC leads to spatter on peaks, this is very common issue on the
bands today 
An undershoot of  ~20% on peaks (it's less on my K3) is negligible in
terms of the receiving end signal strength and a small price to pay for
a cleaner transmitted signal.

73
Brendan EI6IZ    


On Mon, 2010-03-29 at 14:59 -0800, ab2tc wrote:
> Hi,
> 
> No, please, this is not a power calibration issue! A huge number of K3 users
> have complained about this propensity of the SSB power to aim
> "conservatively" for 50-80% of the requested peak power and then slowly,
> very slowly climbing up to the requested power. Once reaching 100% it stays
> there until you perform some kind of QSY operation other than just turning
> the wheel. It is not a huge irritant to me, but an irritant nonetheless. If
> I am in a big rush to have full power on SSB after a QSY, I switch mode to
> TX data FSK D, do a quick squirt of TX and I have instant full SSB peak
> power.
> 
> AB2TC - Knut
> 
> 
> Joe Subich, W4TV-4 wrote:
> > 
> > 
> > 
> >> When I whistle to mic and tune my linear amplifier, I notice 
> >> that last watts going up very slowly. Without linear I tested 
> >> and sometimes first 80 watts out normally but from 80 to 100 
> >> watts it takes about 2-3 seconds.
> > 
> > Sounds like a power calibration issue.  Double check the K3 
> > wattmeter calibration, the amplifier gain calibrations and 
> > TXG VCE.  
> > 
> > 73, 
> > 
> >    ... Joe, W4TV 
> >  
> > <snip>
> > 
> 

-- 
73
Brendan EI6IZ