• Year
  • 1939
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 53746
    • alternative name: RCA Manufacturing || Victor Talking Machine

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

 Technical Specifications

  • Number of Tubes
  • 7
  • 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
  • 2.5 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 7Q4 Ch= RC-478A - RCA RCA Victor Co. Inc.; New
  • Shape
  • Tablemodel, low profile (big size).
  • Dimensions (WHD)
  • 20.8 x 15.6 x 9.8 inch / 528 x 396 x 249 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
  • Price in first year of sale
  • 70.00 USD
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 12 = ca. 1941 and before

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The model 7Q4 is part of the collections of the following members.

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