R = E/I = 2200/.4 = 5500 Ohms.
Close as you're gonna get.
-WB2WIK/6
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]On
Behalf Of jerome schatten
Sent: Friday, September 26, 2008 11:41 AM
To: Amps
Subject: [Amps] gg amp question...
I'm trying to modify my pi network on a pair of gg 813's to work on
160. Looking back into the plate circuit from the pi network, how to
estimate the ac plate circuit impedance that needs to be matched by
the pi network?
My handbook has a series of tables (11 of them) for determining
C(load), C(plate) and L for various values of Z(plate) for each band.
Basically it's a 10db amp that runs ~450w out with 2200v on the plates
and key down Ip of 400ma
Thanks for your insight,
jerome - VA7VV
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