All Transistor 77 Twin Speaker 7TL

Roland Radio Corporation; Mount Vernon (NY)

  • Year
  • 1959 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 152237

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

 Technical Specifications

  • Number of Transistors
  • 7
  • Main principle
  • Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Dry Batteries / D: 6 x 1.5 Volt
  • Loudspeaker
  • 2 Loudspeakers / Ø 5 inch = 12.7 cm
  • Material
  • Leather / canvas / plastic - over other material
  • from Radiomuseum.org
  • Model: All Transistor 77 Twin Speaker 7TL - Roland Radio Corporation;
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 11.375 x 9 x 4.125 inch / 289 x 229 x 105 mm
  • Notes
  • Roland All Transistor 77 Twin Speaker

  • Author
  • Model page created by a member from A. See "Data change" for further contributors.

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