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Philco 46-420 Beitmans Riders
Mondial
Phorum Expert
*****
Posts: 1,114
Threads: 14
Joined: Feb 2013
City: Irvington, NY
#11

01-17-2022, 02:43 PM
I would not recommend the 7A7 as a sub for the 7B7 in a filament series string AC-DC radio. The 7B7 has a 0.15 Amp filament while the 7A7 has a 0.3 amp filament. While the sub would work fine in a transformer powered set, the 7A7 filament would not heat properly in a series connection with other 0.15 Amp filament tubes.

Better to stick with the correct 7B7.
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Messages In This Thread
Philco 46-420 Beitmans Riders - by Radioguy52 - 01-15-2022, 01:12 PM
RE: Philco 46-420 Beitmans Riders - by Kestas - 01-15-2022, 01:29 PM
RE: Philco 46-420 Beitmans Riders - by Radioguy52 - 01-15-2022, 01:40 PM
RE: Philco 46-420 Beitmans Riders - by RodB - 01-15-2022, 05:38 PM
RE: Philco 46-420 Beitmans Riders - by Radioguy52 - 01-15-2022, 08:32 PM
RE: Philco 46-420 Beitmans Riders - by Radioguy52 - 01-17-2022, 01:35 PM
RE: Philco 46-420 Beitmans Riders - by Radioguy52 - 01-17-2022, 02:34 PM
RE: Philco 46-420 Beitmans Riders - by Mondial - 01-17-2022, 02:43 PM
RE: Philco 46-420 Beitmans Riders - by Radioguy52 - 01-17-2022, 03:12 PM
RE: Philco 46-420 Beitmans Riders - by David - 01-17-2022, 10:09 PM
RE: Philco 46-420 Beitmans Riders - by Radioguy52 - 01-18-2022, 12:42 PM
RE: Philco 46-420 Beitmans Riders - by Mondial - 01-18-2022, 03:07 PM
RE: Philco 46-420 Beitmans Riders - by David - 01-18-2022, 09:55 PM
RE: Philco 46-420 Beitmans Riders - by Radioguy52 - 01-19-2022, 07:27 PM
RE: Philco 46-420 Beitmans Riders - by Radioguy52 - 01-19-2022, 11:28 PM
RE: Philco 46-420 Beitmans Riders - by David - 01-20-2022, 10:21 AM
RE: Philco 46-420 Beitmans Riders - by Radioguy52 - 01-26-2022, 03:24 PM
RE: Philco 46-420 Beitmans Riders - by Radioguy52 - 01-26-2022, 03:31 PM
RE: Philco 46-420 Beitmans Riders - by RodB - 01-26-2022, 05:47 PM
RE: Philco 46-420 Beitmans Riders - by David - 01-26-2022, 06:42 PM
RE: Philco 46-420 Beitmans Riders - by RodB - 01-26-2022, 09:13 PM
RE: Philco 46-420 Beitmans Riders - by Radioguy52 - 01-26-2022, 11:09 PM
RE: Philco 46-420 Beitmans Riders - by Radioguy52 - 01-26-2022, 11:13 PM
RE: Philco 46-420 Beitmans Riders - by GarySP - 01-27-2022, 09:38 AM
RE: Philco 46-420 Beitmans Riders - by Radioguy52 - 01-27-2022, 11:00 AM
RE: Philco 46-420 Beitmans Riders - by RodB - 01-27-2022, 11:26 AM
RE: Philco 46-420 Beitmans Riders - by Radioguy52 - 01-28-2022, 04:34 PM



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