[Vintage-Radio] Tube Question

Sun, 17 Nov 2002 19:03:56 -0500

Sorry - BUT - the 5003 is a very valid number.

First - Quite a few of the tubes in these radios ARE marked 5003

Second - The markings adjacent to the sockets are engraved 5003 - JUST like
the 6AL5s are marked next to them.

I have to insist that THESE ARE 5003s!

Bob - N0DGN

----- Original Message -----
From: "JM/CO" <[email protected]>
To: "rbethman" <[email protected]>; "vintage-radio"
<[email protected]>
Sent: Sunday, November 17, 2002 5:53 PM
Subject: Re: [Vintage-Radio] Tube Question

> ** VINTAGE RADIO REFLECTOR - Please do NOT cross-post messages to multiple
mailing lists on the "To:" or "CC:" line of the e-mail message. **
>
> Hello-
> I don't think that 5003 is a valid tube number. I just checked the
listings
> in the manuals for my two tubetesters, a TV-7B/U and Hickok 539-C ( both
> with the most recent manuals ) and the lowest number in this series seems
to
> be 5516. Nothing below this. 5003 sounds like it might be some date code,
or
> other number, but not the type number. Is here a tube layout diagram with
> the unit? This should tell the tale.
> Your Hickok KS-15560-L1 was made for the telephone company. Some ( but not
> all ) of these KS series testers were exactly like, or very similar to,
> regular "civilian" models, only with different model numbers. It would
> probably help a lot if you could come up with the "civilian" equivalent
> model, and search for updates based in this, rather than the KS model
> number. The KS series DID, however, list all Western Electric tubes,
whereas
> the "civilian" models did not.
> Chuck N1LNH
> ----- Original Message -----
> From: "rbethman" <[email protected]>
> To: "vintage-radio" <[email protected]>
> Sent: Sunday, November 17, 2002 4:38 PM
> Subject: [Vintage-Radio] Tube Question
>
>
> > ** VINTAGE RADIO REFLECTOR - Please do NOT cross-post messages to
multiple
> mailing lists on the "To:" or "CC:" line of the e-mail message. **
> >
> > All,
> >
> > I have two AN/URR13As.  They have a LOT of tubes marked 5003.
> >
> >     1)  Is there a known substitute for this tube?
> >
> >     2)  I have a Hickok KS-15560-L1 Tube Tester.  Are there updates to
the
> > tube listing "chart" for this tester?
> >
> > Thanks in advance.
> >
> > Bob - N0DGN
> >
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