[Amps] 4-400A low output, VU3RAZ problem

[John Finner]

Carl and others

>From the Eimac mid 50's book "Single Sideband" page 13 there is a 4-400A data sheet for class AB1 single sideband operation which lists DC Screen Voltage 850 Max Volts.

John WA4EPI

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Ummm, you guys are beeing very selective in the spec reading department.

For AB1 the max is 800 and typical is 750. For AB2 the max is still 800 but 
the typical is 500 since the tube is being run harder; 800V would likely 
exceed the anode dissipation with full drive and loading.

OTOH, for Class C AM its 600/500.

But what do hams care about ratings....run then until the anodes get a hole 
in them.

Carl
KM1H