[AMPS] 2 amp questions

Phil Levin drpal@waterw.com
Wed, 04 Aug 1999 12:18:08 -0400


Pse help, somewhat beginner type questions....  SB-200 to six conversion

1.)  I want to work on the input network.  I am not perfectly sure abt
the resistors for tube impedance.  If  I understand correctly I place
abt a 200 ohm resistor from the cathode/filament to ground on both
tubes..., have a 50 ohm termination on the output, close relay and then
I can use an MFJ 259 analyzer on the input to adjust the input matching
SWR?.  I know no pwr, but with the tubes in place???  Does this sound
right?

2.) To  grid dip the rf choke, do I disconnect it from the circuit,
short top to bottom and then dip it in place?  How abt the inductor in
the final tank circuit?  How do I dip that, with load and tune cap in
approximate position?

TU for any help...(Obviously I'm no EE!)  Phil W2GE


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