>> Amen to that, Carl. 3mA to 10mA of grid current is bad news for a
>> 4CX10000A. For a pair of 4CX800As, its downtown nutsville. OTOH, there
>> is no FCC spec. for spurious feculence/splatter INSIDE the ham bands.
>> Rich---
Hi guys,
I don't know much about amps or tubes but I'm learning a LOT from the
discussions on this reflector. That's why I subscribed. So, here's a
question which I hope isn't too far off topic.
As a user of an ETO91b which uses a pair of 4CX800A/GU-74b's can anyone
tell me what the grid current is when the red 'grid max' light
illuminates. Is it in the 3-10mA range that is 'nutsville'. I'd hate
to damage the tubes as I believe they are quite delicate in the grid
current area, even if they are cheaper than 3CX800's.
Vy 73,
Andrew Williamson GI0NWG / AC6WI
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