[Amps] 572B grid

[Peter Chadwick]

>Perhaps this tech bulletin from 1964 will explain:

http://w2dtc.com/1964-waters-tech-bulletin.jpg<
I need a large tub of salt for this one. Like the clock that strikes 13 and makes you wary of anything else it says, the claim that running the KWM2 PA at 30 watts per tube quiescent actually makes it run cooler is suspect, and so makes the rest dubious. I presume that the 50 mA quiescent current is for both tubes, but it's 30 watts as opposed to about 21 watts per tube at the lower voltage. Plus there's no allowance for the increased dissipation when RF is applied.  As I remember, 6146s were 25watts plate dissipation.
A touch of 1960's snake oil?
73
Peter G3RZP