[Elecraft] K3 power output on SSB

Joe Subich, W4TV lists at subich.com
Mon Mar 29 17:14:35 EDT 2010



> 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 
 


> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Juha Kasari
> Sent: Sunday, March 28, 2010 5:31 AM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] K3 power output on SSB
> 
> 
> Hello,
> 
> 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.
> 
> When I am using my linear (Titan, has peak power meter by 
> led) last one or two leds don't light on ssb, on cw they do 
> with the same driving power.
> 
> I tried TXG VCE, but not effect.
> 
> It is like ALC over react to voice peak.
> 
> Is that normal behavior?
> 
> 73 de juha - oh6os K3 #2100 
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