3A7 3-A-7 Ch= A7L

Andrea Radio Corp.; Long Island (NY)

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  • Year
  • 1934/1935
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 18340
    • Brand: Deresnadyne

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 470 kHz
  • Tuned circuits
  • 9 AM circuit(s)
  • Wave bands
  • Broadcast, Long Wave and Short Wave.
  • Power type and voltage
  • Alternating Current supply (AC) / 110-220 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • from Radiomuseum.org
  • Model: 3A7 3-A-7 Ch= A7L - Andrea Radio Corp.; Long
  • Shape
  • Console, Lowboy (legs < 50 %).
  • Notes

  • The Andrea Models 1A7 and 3A7 feature the A7L chassis . This is a chassis for export because it also features  Long Wave. It has a HF preamplifier plus three IF stages! Since the schematic for the 3A7 also is in the Thali schematic service collection it must have had some popularity in Switzerland. The power transformer of the 3A7 is made for five different input voltages.

  • Circuit diagram reference
  • Die «Thali Schemasammlung» führt das Modell.
  • Mentioned in
  • Rider´s 8
  • Literature/Schematics (1)
  • -- Schematic

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