I have one 8877 that runs 4200 or so in cut-off and another that runs
around 4100.
If the tube is in good condition and has some recent hours on it I
wouldn't worry about it.
If not sure, send it off to someone with a 'gettering' fixture and and
BVT. (Breakdown Voltage Tester) for gettering and testing.
BTW:
If a BVT shows any arcing below 5KV or so, I'd consider the tube bad
anyway. Other opinions may vary.
My .02,
Jim N7CXI
On 6/30/2012 2:36 PM, Charles Bibb wrote:
> Forgot to add this in my last post about high 8877 anode voltage:
>
> I've considered a "buck" transformer on the main transformer
> primary. I only need to "buck" the input a few volts (less than 20).
>
> Is this worth the trouble? Or should I just run it a tad high?
>
> 73,
> Charles - K5ZK
>
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