[AMRadio] Tube Question

[James M. Walker]

Burp, let me go and take a picture of this rack for you, there are NO
mountings on the front rail, the things have shelves in them and a door
front and back, that can be removed by spring loaded hinges, I am going 
to put a R-390 in there for the picture, I will be right back and also I
am starting AIM but I will be downstairs for a few minutes!
BRB
Jim


rbethman wrote:
> 
> 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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