• Country
• United States of America (USA)

• Manufacturer / Brand
• RCA (RCA Victor Co. Inc.); New York (NY)

• Year
• 1939

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 54056

• • alternative name: RCA Manufacturing || Victor Talking Machine

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 9

• Valves / Tubes
• 6SK7 6SA7 6SK7 6SQ7 6U5 or 6G5 6SF5 6F6G 6F6G 5U4G

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz

• Wave bands
• Broadcast, Long Wave and 2 x Short Wave.

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 8 inch = 20.3 cm

• Power out
• 12 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 9Q4 Ch= RC-478 - RCA RCA Victor Co. Inc.; New

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 22.25 x 15.875 x 9.875 inch / 565 x 403 x 251 mm

• Notes
• This model has 3 power supply ratings:
  Rating A...105-125V, 50-60 Cycles
  Rating B...105-125V, 25-60 Cycles
  Rating C...105-130;140-160;200-250V, 40-60 Cycles
  

• Net weight (2.2 lb = 1 kg)
• 37 lb (37 lb 0 oz) / 16.798 kg

• Price in first year of sale
• 90.00 USD

• External source of data
• Ernst Erb

• Source of data
• Collector's Guide to Antique Radios 4. Edition

• Circuit diagram reference
• Rider's Perpetual, Volume 11 = ca. 1940 and before

• Mentioned in
• Guide to Old Radios

• Literature/Schematics (1)
• Machine Age to Jet Age III

• Literature/Schematics (2)
• RCA Victor Service Notes "Red Book" Series

• Other Models

• Here you find 5118 models, 3224 with images and 4151 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from RCA (RCA Victor Co. Inc.); New York (NY)