"Al Parker" <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Hi DW,
Just b4 somebody else does (am I late?) 6BJ6's won't work very well ;-)
6JB6's OK.
I've never heard anything about burning in sweep tubes, but I suppose it
wouldn't hurt to leave the filaments on for 8 hrs or so, I've heard that in
old transmitting tubes that sometimes had very slightly leaky seals, like
the air cooled ones used in Halli HT-33's (can't remember the #, but do have
2 of those amps & a cupla tubes), that putting heat to them for 24+ hrs
might help. It didn't for me in one of them.
YMMV
73,
Al, W8UT
New Bern, NC
www.boatanchors.org
www.hammarlund.info
----- Original Message -----
From: "DW Holtman" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, December 04, 2007 6:24 PM
Subject: [drakelist] Burning in New PA Tubes,
Hello,
Just wondering on the thoughts of this group on the best way to burn in a
new pair of 6BJ6's for a T-4B transmitter. Have heard several ideas in the
past, ranging from applying filament voltage for a few days to increasing
filament voltage 20% over for a short time. Any good thoughts, and the
reason behind them?
Best,
DW Holtman
WB7SSN
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