[R-390] 3TF7 Ballast Tubes

Ben Loper brloper at gmail.com
Fri Feb 18 16:35:36 EST 2011



I came across some NOS 3TF7 Amperite tubes.  Should I make an offer on them
or is the conventional wisdom to replace them with a 12BA6 tube. 



More information about the R-390 mailing list