A3

RCA Victor (International), Montreal

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  • Year
  • 1939/1940
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 148883

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; 2 AF stage(s)
  • Tuned circuits
  • 7 AM circuit(s)
  • Wave bands
  • Broadcast plus more than 2 Short Wave bands.
  • Power type and voltage
  • Alternating Current supply (AC) / 105-125 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 6 inch = 15.2 cm
  • Power out
  • 2 W (5 W max.)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: A3 - RCA Victor International,
  • Shape
  • Tablemodel with Push Buttons.
  • Notes
  • This RCA model A-3 (A3) has the broadcast band (540 - 1720 kc) plus the following four short wave bands: 49 (5.9 - 6.24 mc), 31 (9.41 - 9.69 mc), 25 (11.68 - 11.92 mc) and 19 (15.09 - 15.38 mc). The scale offers 6 push buttons for fixed stations on the broadcast band. The choke field is for the magnetic field of the loudspeaker which has also a "hum neutralizing coil". The magic eye 6U5 is a bit hidden within the scale. With its RF stage (6SK7) and 7 tuned circuits the model A3 has a very good reception. The same applies for the console radio A4 which uses the same documentation and circuit. Power supply with rating A is for 50 to 60 cycles, the one with rating B is for 25 - 60 cycles, each 80 watts. The loudspeaker for A4 is RL70H-1 12 inch and the one for A3 is RL79-1 6 inch, both with impedance 3.4 ohms at 400 cycles. At least for the A4 there is a "Radio-Tone-Phono-Television switch" and a "television socket" plus a separate "phone socket".
  • Source of data
  • -- Original-techn. papers.
  • Mentioned in
  • Volume 1939-1940 page 9
  • Literature/Schematics (1)
  • - - Manufacturers Literature (RCA Victor Models A3 & A4 Tech. & service data)
  • Author
  • Model page created by Ashis Mukerjea. See "Data change" for further contributors.

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