Details
Octal Ballast, nominal voltage drop 49 volts at 300mA. Typically intended for radios using two number 40 or 47 dial lamps.
Known uses include:
Acratone 117J
American Bosch 610, 610A
Automatic 56
Clinton 146, 216
Freed 25, 26, 28, FE-44S, FE-60, FE-62P
Howard 59, 59A
Sonora D12, DD14, DDA14, E, EA, E33, EA33
Westinghouse WR103, WR103A, WR120, WR140