05-18-2007, 10:07 AM
Well, I finally got my Philco model 46E, which I understand are quite rare. This one looks to be complete and un-messed with, and even has all its shields in place. No rust on the chassis! Runs on 230 volts DC.
The problem is testing the tubes. The ballast and one 71A are good. But it uses 3 type 14 tubes and 1 type 17. I have 5 tube testers, but none will test these tubes! It looks like the 14 may be similar to a type 24 or 36 but with a 13-14 volt DC filament. The 17 looks like it may be similar to a 27, but again with a 13-14 volt DC filament. The filament voltage I found listed on the schematic in Riders 1. Not sure what the real voltage should be. Does anyone know?
Has anyone tried testing these tubes using 24/36 and 27 settings but with a higher filament voltage? The only choice I have is 12.6 volts, and AC of course.
Thanks!
The problem is testing the tubes. The ballast and one 71A are good. But it uses 3 type 14 tubes and 1 type 17. I have 5 tube testers, but none will test these tubes! It looks like the 14 may be similar to a type 24 or 36 but with a 13-14 volt DC filament. The 17 looks like it may be similar to a 27, but again with a 13-14 volt DC filament. The filament voltage I found listed on the schematic in Riders 1. Not sure what the real voltage should be. Does anyone know?
Has anyone tried testing these tubes using 24/36 and 27 settings but with a higher filament voltage? The only choice I have is 12.6 volts, and AC of course.
Thanks!
