What are you driving it with? A solid state rig? What is the input SWR
shown on the rig's meter? Does the rig have an internal tuner if so, turn it
on and try it again.
73
Jim W7RY
--------------------------------------------------
From: "Tim Long" <tlong8@nycap.rr.com>
Sent: Sunday, June 19, 2011 7:27 PM
To: <amps@contesting.com>
Subject: [Amps] Excessive Plate Current
> Hello All,
> I am a newbie amp owner and have a Clipperton L. It has a Dahl
> replacement transformer that provides about 2625 volts under load. It
> appears that the tank circuit is original but that's nearly impossible
> to determine. I have two sets of 572b's. When driven with 100 watts
> and tuned for maximum power into a 50 ohm load, 80/40/20...
> Set #1 - 4 Raytheon's
> plate current is around 850 ma, output is around 400 watts
> Set #2 - 2 Certron's and 2 GE's
> plate current is around 500 ma, output is around 300 watts
> The loading control is at minimum (max cap) or very close.
> What am I looking at and where do I go from here?
> Thanks in advance & 73, Tim, W2UI
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