[R-390] Tubes?

[Paul Staupe]

Folks,

Five years ago I was fortunate enough to get a couple of sets of 
complete R-390 non-A tube sets from Lowell, K6KC.

As several members of this esteemed group will testify, in my 50 year 
old kid-type wisdom (or is it an obsession?), I have invested in more 
than a few versions of the non-A, the A and others such as two 389s, a 
391 and two 392s.

I want to make sure that these radios perform at their peak... (each one 
has a unique history)... so I'd ask for suggestions as to who you folks 
would suggest for a good tube source for these radios as spares and/or 
replacements...

Best regards,

Paul W0AD
Minneapolis