Regen Question
Hi Dan,
Have you checked that your 6M ohm grid leak is actually 6M ?
It does sound like a charge build up on the grid. Does the RF anode
current rise or fall when the radio goes dead ?
Are there any components attached to the grid that could be breaking
down slowly - capacitor, maybe even valve base.
Have you tried replacing the valve base ?
Have you tried a different valve ? Maybe broken or cracked valve bottom
(paxolin to valve pin).
Stick the whole unit in the oven (on low) and dry it out for 3 hrs -
moisture getting in somewhere ?
Does sound weird and interesting.
Regards,
Mark.
|