Re: Tube Question...

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "James" <mustang3-at-cox-dot-net> 

Hi Brett,
     Big triodes are your best bet.  833A, 572B, 5868, 304TL, even 811a's if
you're careful and don't run the anodes too hot. Some toobs will get gassy
if the anode gets too hot. I like the 833A's as an all around VTTC tube. The
nice thing about 833's is; no socket required. You can run higher anode
voltage (than rated) for short runs. The big ceramic/metal triodes are also
good. They are more trouble to use because of the cooling requirements. Do a
Google search on the Eimac tube.


Later,

James
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, July 13, 2004 7:39 AM
Subject: Tube Question...


 > Original poster: Brett Miller <brmtesla2-at-yahoo-dot-com>
 >
 > All,
 >
 > This question is mainly directed to John Freau, Steve
 > Ward, and all the other VTTC enthusiasts.
 >
 > I have a ham radio friend who recently came into a
 > large lot of tubes due to a silent key (ham who passed
 > away) estate giveaway.  There are many I have not
 > heard of....lots of power tubes with metal heat sinks
 > and many other glass tubes new in the box.  One in
 > particular I was curious about was a brand new Eimac
 > 4PR60B.  If this would be suitable for VTTC use I
 > would probably be able to trade something for it or he
 > might just hand it to me.  Also there was a matched
 > pair of 4-125's.  I believe I recall those being on a
 > list John emailed me a while ago.  I will check that
 > list.
 >
 > It would be nice, plus it would encourage more VTTC
 > experimentation if there was a big list of usable
 > tubes somewhere on Hot-Streamer.  It would be even
 > better if there was also a directory which held text
 > files containing vacuum tube pinouts.  For some, I'm
 > sure these things are elementary, but I think such a
 > resource could really benefit the beginner.
 >
 > -Brett
 >
 >