Re: which tubes to get at hamfest?

• To: tesla-at-pupman-dot-com
• Subject: Re: which tubes to get at hamfest?
• From: Bob Misiura <misiura-at-nccoast-dot-net> (by way of Terry Fritz <twf-at-verinet-dot-com>)
• Date: Tue, 16 Mar 1999 18:05:28 -0700
• Approved: twf-at-verinet-dot-com

Jeff,

There are many tubes to consider for TC coils.  (if the 833A's mounting
requirements aren't a problem . . .) 

The 845 would be a natural for the list you mention.

A better idea would be to get a copy of the RCA Transmitting Tube manual
or ARRL Handbook and take it with you to hamfests.  Or go to a library
and copy a few sheets from the ARRL handbook.  

The RCA tube manual is reprinted by Antique Electronic Supply and was
reasonable in cost (~$7.00 if I remember).  It has all the specs and
operating conditions for the tubes you mention and many more.  There is
a lot of information on tube mounting, use and design considerations, as
well as a few circuits that could be used to drive a TC.

The size, shape, and construction of tubes is a good indication of what
use they were designed for.

take care
bob

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