Hi - resurrecting an old 2K-3. Have the power supply at 2.8-3 k and have
baked the tubes w/o HV to degas.
I found a reference to loading which suggests there should be about 800
ma plate current at 250 ma grid current at full output. I can generate
about 250 ma on the grid but the max I can get on the plate is about 500
ma. and about 900 watts output (40 & 20m). So, 2800 x .5 = 1400 watts
input. 900/1400 = 64% efficiency. Is this about right with 100w drive or
should I be looking for 800 ma? 500 ma seems low for a pair of 3-500s-
soft tubes??
Thanks,
Jim
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|