[Amps] Re GS-35B hours..

[Jeff Blaine AC0C]

I think in the Eimac white paper covering the reduced filament voltage, they 
talk about the benefit being applicable to tubes with a certain ratio of 
filament power to output power.  Forget what that was but I seem to remember 
it not being of much value, by Eimac's claim, for smaller tubes.

73/jeff/ac0c


--------------------------------------------------
From: "Bill, W6WRT" <dezrat1242 at yahoo.com>
Sent: Sunday, December 20, 2009 10:13 AM
To: <amps at contesting.com>
Subject: Re: [Amps] Re GS-35B hours..

> ORIGINAL MESSAGE:
>
> On Sat, 19 Dec 2009 08:20:08 -0800, Jack Parker <vhfplus at gmail.com> wrote:
>
>>I experienced increases in
>>tube life of at least 50 percent based on comparisons to tube log records
>>when the tubes were installed and run at full voltage for the life of the
>>tube.
>
> REPLY:
>
> Later on in the tube's life, did you have to increase the heater voltage, 
> or
> just leave it constant for the entire lifetime?
>
> 73, Bill W6WRT
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>