Communications Receiver FRG-7

• Country
• Japan

• Manufacturer / Brand
• Yaesu-Musen Co. Ltd.; Tokyo

• Year
• 1976–1980

• Category
• Amateur-Receiver (amateur bands, may include broadcast bands)

• Radiomuseum.org ID
• 69095

• Picture
• Schematics

Previous Next

Previous Next

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

• Number of Transistors
• 21

• Semiconductors
• 3SK40 2SK19 2SC372 2SC784 2SD313 SN76514 AN214 1N60 1S1555

• Main principle
• Wadley-Loop principle (including dual superhet)

• Wave bands
• Broadcast plus more than 2 Short Wave bands.

• Power type and voltage
• Line / Batteries (any type) / 100; 110; 117; 200; 220; 234 / 8×1,5 Volt

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

• Power out
• 2 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Communications Receiver FRG-7 - Yaesu-Musen Co. Ltd.; Tokyo

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 340 x 153 x 285 mm / 13.4 x 6 x 11.2 inch

• Notes

• Yaesu Communications-Receiver FRG-7.

  Frequency range: 500 - 30000 kHz in for ranges; Modes: AM, SSB, CW; external power supply (12 VDC) possible.

  Wadley-Loop principe incl. dual conversion superhet. First use of the Wadley-Loop principle was in RACAL RA-17. Principle invented by Dr. Trevor Lloyd Wadley, 1920 - 21.05.1981.
  In Europe also sold under the Sommerkamp-Label with same id: FRG-7, and from Sears in the US under Nr. 412.36380700.

  Early models have no fine-tuning.

  21 Transistors, 2 ICs and 12 Diodes listed one per type.

• Net weight (2.2 lb = 1 kg)
• 7 kg / 15 lb 6.7 oz (15.419 lb)

• Price in first year of sale
• 290.00 $

• External source of data
• Eilert Menke

• Source of data
• -- Original-techn. papers.

• Mentioned in
• Shortwave Receivers - Past & Present (3rd ed.)

• Literature/Schematics (1)
• Schematic

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

• Other Models

• Here you find 301 models, 284 with images and 137 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Yaesu-Musen Co. Ltd.; Tokyo