[ARC5] Equivalent tube types

[Geoff]

And another

http://en.wikipedia.org/wiki/List_of_vacuum_tubes#North_American_numeral-only_systems

And you might find something worthwhile buried in this audiophool haven

http://users.rcn.com/brentjes/bjtubes.htm#100A%20to%201970



----- Original Message ----- 
From: "Leslie Smith" <vk2bcu at operamail.com>
To: "ARC-5 List" <arc5 at mailman.qth.net>
Sent: Sunday, July 15, 2012 6:11 PM
Subject: [ARC5] Equivalent tube types


> Dear list:
> There are well known equivalents (long life, high reliablity) to the
> 12A?7 series of tubes.
> (See?  you guys have corrupted me.  I now call a "valve" a "tube"!
> Aaarghhhh!  My soul is bound for perdition ....)
>
> Can any-one tell me the numbers?
> It's 6000 or 9000 or some number like that.
>
> Ditto for the 9000 .. 9003 types.
> There are "common" equivalents for these.
> Can anyone help?
> I have an ARC VHF set that uses these tubes but there are some that are
> hard to get.
>
> Thanks
>
>
> -- 
>  Leslie Smith
>  vk2bcu at operamail.com
>
>
> -- 
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