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[Amps] 4-400A Plate

To: <amps@contesting.com>
Subject: [Amps] 4-400A Plate
From: 2@vc.net (Rich)
Date: Fri, 8 Nov 2002 06:00:49 -0800
My experience is that c. 3500Vdc is needed on ssb to produce the needed 
ZSAC (75mA) with 0V bias.  

>I have installed a single 4-400A in my Swan Mark 1 for
>testing.  I am running it Zero Bias and Grounded
>Grid(it's being used as a triode).  It has 2500vdc
>plate voltage and a max of about 400ma with 100 watts
>of drive.  I am curious as to others experiences doing
>this with the 4-400A.  The plate gets red in SSB and
>CW with 100 watts of drive as I expected it should.  I
>back the drive down but even in SSB the plate still
>gets red.
>
>73,
>Bill
>
>Resting current is about 40ma.  I tested it with about
>100 watts of drive
>
>=====
>Bill Smith KO4NR
>
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-  Rich..., 805.386.3734, www.vcnet.com/measures.  


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