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[Amps] still working on SB-201

To: amps@contesting.com
Subject: [Amps] still working on SB-201
From: david sutton <sootydave@yahoo.com>
Date: Tue, 7 Apr 2009 07:07:27 -0700 (PDT)
List-post: <amps@contesting.com">mailto:amps@contesting.com>
hi group,
i have a SB201 that was modified to 11 meters. i have rebuilt the amp from 
scratch all new components. the tuned circuit had been butchered so the 20 and 
15 meter coils need to be re-wound. does any one have any idea how many turns 
each coil requires. the 20 meter coil needs rewinding due to having been smoked 
this has 9 turns on the former, i think this is the right amount. the 15 meter 
former has 3 turns +padding (removed), this I'm thinking is way off.and would 
be correct for the 11 meter band. if any one has a SB201 they are willing to 
open up and count these windings for me i would be most pleased.
also i need to know what the driving impedance of the 572b tubes are, so as i 
can re-tune the coils
 73's
Dave
 
Brits with a southern call? how strange, only when you hear the accent.
see kg4uxr on :-
www.qrz.com/callsign/kg4uxr


      
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