On Nov 28, 2010, at 11:09 PM, mike stokes wrote:
> Hi Guys
>
> Someone gave me 2 tubes years ago and said they were 3-500s. Well I am not
> sure they really knew, and I don't know as the lettering is worn off. Here
> is a link with some pics.
>
> http://picasaweb.google.com/mike9v/Tubes#
>
> The one on the left is an Eimac. It end in an A and has S4 7704 stamped
> inside.
>
> The one on the right is a Westinghouse and looks like it says 5/5xxA where
> the x in worn and illegible.
>
> Any ideas on what these really are ? Or what is a good way to figure it out
> ?
Looks more like a 4-400A. Go to Google and then click on images and search a
bit.
3-500Z / 3-400Z don't have the metal base.
Bill Coleman, AA4LR, PP-ASEL Mail: aa4lr@mac.com
Quote: "We invented personal computing."
-- Bill Gates @ TechNet / MSDN 2003
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