[Elecraft] [K3] Power variations in K3 / 3.19

[Vic Goncharsky]

I have noticed this problem after assembling K3 of mine. Asked Lyle about it in Dayton. He recommended a few things which did not help in my case, the rising SSB power syndrome is still there. Looks like a slow RC-chain somewhere in the power control circuitry. It's just my assumption, which can be a wrong one.73, Vic US5WE/K1WEK3 #2907 

--- On Thu, 7/9/09, ab2tc <ab2tc at arrl.net> wrote:

From: ab2tc <ab2tc at arrl.net>
Subject: Re: [Elecraft] [K3]  Power variations in K3 / 3.19
To: elecraft at mailman.qth.net
Date: Thursday, July 9, 2009, 2:35 PM


I have this problem also, not only after power up, but after each band
change. My favorite workaround is to change mode to data FSK, switch to
dummy load, then press PTT  for a couple of seconds. Back to SSB and I have
full talk power immediately. 

Can't comment on your other problem as I am still on 3.14.

Knut - AB2TC

Ignacy wrote:
> 
> <snip>
> 
> There is an old problem still present on 3.19. AFter turning the rig on,
> in SSB the peak power starts at 30-70W and in a minute of transmitting
> rises to about 95W (when set to 110W). Measurements with LP-100 calibrated
> in factory.  The initial power varies from time to time. 
> 
> Any ideas?
> 
> Ignacy
> 
> 
> 
> 
> 
> 
> 
> 
> 


-----
AB2TC - Knut
-- 
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