Monacor 2 Transistor Boy's Radio

Monarch Electronics Int. Inc.; North Hollywood, CA

  • Year
  • 1960 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 350764

 Technical Specifications

  • Number of Transistors
  • 2
  • Semiconductors
  • Main principle
  • TRF with diode detector; Reflex
  • Tuned circuits
  • 1 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) / Ø 5 cm = 2 inch
  • Power out
  • 0.025 W (0.1 W max.)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: Monacor 2 Transistor Boy's Radio - Monarch Electronics Int. Inc.;
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 60 x 78 x 30 mm / 2.4 x 3.1 x 1.2 inch
  • Notes
  • Two transistor "Boy's Radio" commonly sold in the U.S. to avoid tariffs, since a device with less than 3 transistors was considered a toy, not a radio.  PCB etched with "FUJIKO", possibly made by Fuji Kogei Sha (Kogeisha) Ltd., Tokyo.

    Almost all schematics of this type radio (with loudspeaker) are practically identical with minor component changes.  The principle is TRF (tuned reflex).  Some design variants have regeneration provided by a "gimmick" using a wire to capacitively couple the RF stage to the ferrite antenna, e.g. Crown TR-25.

    Similar to Pet and Zephyr 232 models.

    Made in Japan

  • Net weight (2.2 lb = 1 kg)
  • 0.172 kg / 0 lb 6.1 oz (0.379 lb)
  • Author
  • Model page created by Craig Hyatt. See "Data change" for further contributors.

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