[BC] Idle transmitter tube life...

[Burt I. Weiner]

I know of one transmitter that has 833 in the modulators and 
finals.  It gets turned on about once a year and is always raring to 
go.  If you have a decent seal on the tube/s it should be able to sit 
with the filaments off for many years with no problems.  I always 
tried to get JAN or Eimac tubes.  The JAN 833's were great.

Burt

At 08:38 PM 6/3/2006, you wrote:
>From: Charles Ring W3NU <charlesr at infonline.net>
>Subject: Re: [BC] bta-250m
>To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
>Message-ID: <448251C7.30402 at infonline.net>
>Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
>Stan Tacker wrote:
> > As a curator of a 250GY, BTA-1R, 20-V3, BC1-F, and BA-1k, I can attest that
> > these rigs sound great with fresh tubes.  All of these have been replaced
> > with solid state transmitters as the main.  As for using the tube rigs as a
> > standby...well, just don't turn off the filaments!  Let these rigs go dark
> > for a few days and the tubes get gassy quick.  (Actually the 
> McMartin can be
> > counted upon to restart at some power level, since it has a solid state
> > driver).
> >
>
>I've seen many 833A's, 807's and others do fine after sitting idle
>indefinitely. My experience with 4-400's is limited. I may have a chance
>to restore a 20-V2 to working order but the blower for two of its
>4-400's is missing. Any suggestions for a replacement?

Burt I. Weiner Associates
Broadcast Technical Services
Glendale, California  U.S.A.
biwa at earthlink.net
K6OQK