[Heathkit] Premium tube replacement guide

[Carl]

Does this help with "valves"?

http://home.swipnet.se/~w-12206/radio/teknik/tube.txt

And this for 4 digit stuff

http://deane.bio.ucalgary.ca/sp_to_jan

Carl
KM1H


----- Original Message ----- 
From: "David Thompson" <thompson at mindspring.com>
To: "Old Tube Radios" <boatanchors at theporch.com>; 
<Heathkit at mailman.qth.net>
Sent: Friday, January 16, 2009 6:32 PM
Subject: [Heathkit] Premium tube replacement guide


> In looking through an old 73 for November 1962 I came across a 2 page 
> guide for a lot of those 4 digit
> premium tubes.  Like the 1614 is a premium 6L6.
> I have a sleive of 5726's which are 6AL5's.   There are about 5 or 6 
> listings for 6AL5 replacements.  The Author, Roy Pafenberg, W4WKM 
> gives you warnings on some such as 5933 (807) with a 3" greater base 
> diameter.  Oh, the article is on pages 46 and 47.  Sorry no scanner on 
> this PC.
>
> Now if only I could find a listing for Mullard valves.
>
> 73 Dave K4JRB
>
>