circuit modulator with 4-250

[mario_puzos]

hi i need a modulator circuit with two valves or 6156 4-250

[WD5JKO]

hi i need a modulator circuit with two valves or 6156 4-250

Mario,

  I am not sure what you mean. Do you mean modulate a 4-250 by a 6156? If so, this could mean the 6156 would be a screen modulator, or clamp tube modulator?

   Looking around I found a neat two tube circuit with a 4-400 modulated by a bias shift modulator using a single 304TL:

http://www.813am.qsl.br/artigos/moduladores/hileman/the_bias_shift_modulator_cq_apr_54.pdf

Jim
WD5JKO

[mario_puzos]

hi jim I need a circuit that uses a modulator valve is to modulate 4-250 plated at a couple of 4-400

[WD5JKO]

hi jim I need a circuit that uses a modulator valve is to modulate 4-250 plated at a couple of 4-400

Mario, Look at the attached schematic. Maybe this is closer to what you are looking for?

Schematic from following source:
http://www.g8wrb.org/data/Eimac/Care-and-Feeding-of-Power-Tetrodes.pdf

Jim
WD5JKO

[mario_puzos]

thanks jim .. it will analyze a hug

[flintstone mop]

hmmmm
I'm getting the picture of a pair of 4-250's modulating a pair of 4-400's...........
I don't know if the 250's will make enough audio