Voltage converter for battery operated tube radio receivers / transceivers. Solution to the problem of mobile use. Allows for mobile operation of vintage DC operated radios from a single 12V battery. This is a battery consolidator providing multiple voltages from a single DC source. It also becomes a battery eliminator when powered by an AC/DC adapter (also available). Converts 11 – 30VDC (Vin) to necessarily filament, plate, and grid voltages. “A” (filament) supply : “Ax”: 1.25V to 10V / 3 amp, “B” (plate) supplies: 135V/ 80mA, 90V/ 60mA, 67.5V /45mA, 45 and 22.5V/ 5mA, sum of all “B” supplies. B-, A- and Vin(-) are common in this converter. It CAN NOT BE USED to power farm radios using 1.5 and 90V batteries. Radios requiring B- to be connected to A+ will operate with B-connected to A- but with slightly reduced plate voltages. DC input can be supplied by battery (see photo, battery not included) or appropriately sized linear AC / DC adapter (see photo, adapter not included). Two indicators: one indicates battery is connected and voltage converter is ON, the other indicates radio is also ON and drawing current. Small size (4.7 x 4.7 x 4″ height) with cover on (3″ height with cover off). Light weight 18 oz. Without battery or adapter. DC in: 11 – 30V. Operating temperature 0-35 deg C. Contains input and output EMI filters. Overload, short circuit and reverse polarity protected. Converters can be connected in series to provide higher “B+” voltages: 157.5, 180, 202.5, 225 or 270V (247.5V can also be provided with series connection and simple adjustment). Series connection requires two converters and two batteries or AC/DC adapters.

UNSURE WHAT THIS WAS USED FOR. COMES AS SHOWN WITH AN OLD RCA TUBE INSTALLED. MEASURES APPROX: 11″ DEEP X 4″ WIDE X 6.5 TALL. HEAVY WITH WOOD BOTTOM AND TOP. THE BLACK AREA SHOWS CRACKING FROM AGE. COMES UNTESTED AND AS IS FOR PARTS. PLEASE ASK IF YOU HAVE ANY QUESTIONS THANK YOU! This item is in the category “Collectibles\Radio, Phonograph, TV, Phone\Radios\Tube Radios\1930-49″. The seller is “bbermuda1810″ and is located in this country: US. This item can be shipped to United States, Canada, Bahamas, Uruguay.

• Modified Item: No
• Country/Region of Manufacture: United States
• Brand: RCA
• Time Period Manufactured: 1930-49
• Featured Refinements: Vintage Tube Radio