[R-390] Tube testers and other babblings

[Scott Bauer]

  Hello Gang,

  Most of you don't know me. I am new to the list.

  I recently bought a very nice 390-A from a gentleman here on the list and 
am completely
hooked on the 390-A. I really love this radio. I then got on ebay and 
bought a ton of tubes.
I then realized that I had no way of finding out the condition of the tubes 
that I am buying
as "NOS & NIB". So I bid on and won a B&K Dyna Jet tube tester. Now, after 
it is too
late, I have a few questions. Please remember that I know practically 
nothing about tube
gear and tubes. So with all of the babble out of the way, This is what I 
would like to know.

  Is the B&K tester worthy and accurate ? If not, is there a certain tester 
that would serve
me better?

  All of the tubes I have bought look new. Should I test them all? Does 
testing the tubes
put wear on them?

  Most of the tubes I bought are JAN tubes. Some are GE. I also got some 
5814A's made by
National Gold Line. Is it OK to use the National tubes if there are some 
JAN's or GE's
already in the radio or does it matter if one would mix and match?

  Lastly, some of the tubes that I bought are dated back to the 40's. 
Should I save these?
It seems that they would be collectible.

  Thanks for any advice.

  Scott