[Hammarlund] JAN tube caveats

[Jim Wilhite]

You saw what Larry wrote and I wonder if the problem you 
mentioned is the same with both of you.  I didn't check the 
production date on those I have but will watch what happens.

You don't suppose those in the tube factory knew the handwriting 
was on the wall and didn't try very hard do you?

By the way Larry, the KS15650 has a roll chart.  Is that what you 
have or is it something else?  You have my curiosity up now.  I 
have a book of what is called Obsolete tube types for the KS 
15750.  The only difference in the two types is the later one 
will check sweep tubes and such.

73  Jim
W5JO


Craig Roberts wrote:
> Jim Wilhite wrote:
> 
> "...my experience is quite different with JAN tubes...."
> 
> I, too, had great faith in the inherent superiority of JAN tubes, which 
> is why I asked if anyone else had run into problems with them.
> In fairness, as I pointed out, all the troublesome tubes in my 
> experience seem to have been ones from late (1979 and later) production 
> runs. It seems to me I read recently that there were some quality 
> control problems in late tubes. Anyway, I like their pretty green and 
> blue markings.
> 
> 73,
> 
> Craig
> W3CRR
> 
> 
> .
>