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Re: [Amps] Dual 3-1000Z amp problem

To: Clark@ClarkTurnerTuning.com, amps@contesting.com
Subject: Re: [Amps] Dual 3-1000Z amp problem
From: Gerald Williamson via Amps <amps@contesting.com>
Reply-to: TexasRF@aol.com
Date: Tue, 19 Apr 2016 15:23:05 -0400
List-post: <amps@contesting.com">mailto:amps@contesting.com>
You are retuning the plate circuit to match the new lower plate load Z,  
right? If you are, you might try a different watt meter.
 
73,
Gerald K5GW
 
 
 
In a message dated 4/19/2016 2:17:45 P.M. Central Daylight Time,  
Clark@ClarkTurnerTuning.com writes:

I just  finished my Dual 3-1000Z GG amplifier.  I have an odd issue now 
that  I cant seem to figure out. The amp will do 2KW with 40 watts of 
drive on  80 meters.  Additional drive does not add any power out.  100  
watts input does 2kW out.  The Input SWR is low at 1.2 to 1.   The plate 
current DOES increase, But there is no additional  output.

I had this amp running before with 4-1000 and 3-1000s and some  of you 
remember, I turned the roller inductor on accident when I was  trying to 
reach for the load turns counter. That toasted the plate choke.  I 
replaced that choke and while I was in the amp, I installed RF parts  
RFC30 chokes instead of the HB ones.  I was having high input on 80  so I 
changed them out. That is fixed but I now have this new  issue.

Any idea where to go?  This condition exists on 40 and  80.  2KW easy. 
But then it wont make  more.

C
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