• Country
• United States of America (USA)

• Manufacturer / Brand
• Microsonic (Toyomenka, Inc.); New York, NY

• Year
• 1966 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 360094

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

• Number of Transistors
• 7

• Semiconductors

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 3 AF stage(s)

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 1 x 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 7 Transistor 700 - Microsonic Toyomenka, Inc.;

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Notes

• Actually has 8 transistors, but one is wired as a detector diode. The audio circuit has a 1st stage transistor (1 transistor) driving a 2nd stage Darlington push-pull output (4 transistors).

  Made in Hong Kong

• Mentioned in
• -- Original prospect or advert (The Chillicothe (MO) Constitution-Tribune, Nov. 30, 1966, page 25 ad (photo locked due to copyright))

• Author
• Model page created by Jerry Elarton. See "Data change" for further contributors.

• Other Models

• Here you find 3 models, 3 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Microsonic (Toyomenka, Inc.); New York, NY