Yeah I agree, I do maintenance on the amps, but what if you have 5 or six
used tubes stashed away for each amp. In my case I have some "pulls" I
obtained that I couldn't pass up. I was hoping to make a "maintainer"
rather than doing all the swapping. I'd rather spend my time chasing DX,
hi.
Bob, K6UJ
----- Original Message -----
From: "Dudley Hurry" <jhurry@austin.rr.com>
To: "Bob Harmon" <k6uj@pacbell.net>; <amps@contesting.com>
Sent: Tuesday, November 05, 2002 10:44 PM
Subject: Re: [Amps] maintaining spare finals
> Bob,
>
> If you have the amps, swapping the tubes should be just part of the yearly
> maintenance that you should do to you amp. Clean the dust out of the
inside
> of the cabinet, tubes (I think Alpha has a WEB page dedicated to plugged
up
> tubes due to dust) and clean the bandswitches and relay contacts if you
can
> and oil the blower (s). This should be done every year, and while you
are
> at it, swap out the tube (s)..
>
> Thanks and 73's,
> Dudley
> WA5QPZ
> jhurry@austin.rr.com
>
>
>
>
> ----- Original Message -----
> From: "Bob Harmon" <k6uj@pacbell.net>
> To: <amps@contesting.com>
> Sent: Tuesday, November 05, 2002 8:11 AM
> Subject: [Amps] maintaining spare finals
>
>
> Hi all,
>
> I'm new to the list and tried to send this query once allready, hope I
> didn't send it twice !
> I was surprised to read the article in the referenced web page about the
> need to swap "spare" final tubes in our amps every year to prevent gassing
> problems. I would appreciate your input on this subject. In my case, I
> have spare 572b's, 8877's stored away and it wouldn't be practical to
> rotate/swap them into my amps every year. If this is really a problem,
> would it be a workable scheme to make a chassis with the tube sockets for
> the finals and simply feed filament voltage to the tubes for several days
?
> I could see doing something like this every year to maintain the finals ?
> Any ideas ?
> web page article:
> http://www.qsl.net/kk5dr/Tubes.html
>
>
>
> 73,
>
> Bob, K6UJ
>
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