[Amps] 8877 filament.

[Jim W7RY]

I believe you missed a turn in the road Randy...

73
Jim W7RY



-----Original Message----- 
From: Thomas Walsh
Sent: Thursday, May 04, 2017 7:17 PM
To: Randall, Randy
Cc: Jim Thomson ; amps at contesting.com
Subject: Re: [Amps] 8877 filament.

And the blower would still need to be on as well, to keep from
heat damaging the tube, it will still get hot. Never power a
filament with no forced air! Even reduced filament voltage..

Sent from my iPad

> On May 4, 2017, at 12:46, Randall, Randy <Randy.Randall at UCHealth.com> 
> wrote:
>
> I wonder how much the warmup delay would be shortened if the filament was 
> run at, say, 3 V on a 24/7 basis, and then increased to 5V when the 
> amplifier was powered up

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