• Country
• United States of America (USA)

• Manufacturer / Brand
• General Electric Co. (GE); Bridgeport CT, Syracuse NY

• Year
• 1955/1956

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 96885

• • Brand: Musaphonic

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

• Number of Transistors
• 5

• Semiconductors
• 2N136 2N137 2N135 2N78 2N44 1N64

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / Pack form battery 4.5 & 13.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.75 inch = 7 cm

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 675 - General Electric Co. GE;

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

• Dimensions (WHD)
• 5.5 x 3 x 1.5 inch / 140 x 76 x 38 mm

• Notes

• General Electric model 675 is in black color.
  The same model was made in the following colors: model 675 in black, model 676 in ivory, model 677 in red and model 678 in green. They are General Electric's first transistor radios - and it is the second pocket sized transistor radio, made sorthly after Regency's model TR1 pocket radio. In between is only the much bigger sized Raytheon model 8TP, which was also made in 4 colors.
  The technique of the GE pocket transistor radio is unique. See SAMS set 329, folder 7 from September 1956 and Beitman vol 16 show only 675 and 676 what indicates that 677 and 678 followed later than 675 and 676 - in 1956 instead of 1955. We include SAMS for the latter two. The set is made for a "Pack form battery" with a common positive terminal: Eveready number 239 or Burgess XX9. Detection accomplished by a diode just before the 2N78.
  
  Couleur Noire, pile bi voltage 4.5 & 13,5v Eveready 239 ou Burgess XX9.

• Net weight (2.2 lb = 1 kg)
• 0.4 kg / 0 lb 14.1 oz (0.881 lb)

• Price in first year of sale
• 49.95 us dollars

• Source of data
• -- Collector info (Sammler)

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 16, 1956

• Mentioned in
• Transistor Radios 1954-68 (Antique Radio Magazine n.88, January-February 2009, page 28. Written in Italian.)

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 9-56, Set 329, Folder 7)

• Author
• Model page created by Jean Claude Pigeon † 2008. See "Data change" for further contributors.

• Other Models

• Here you find 2916 models, 2140 with images and 2042 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from General Electric Co. (GE); Bridgeport CT, Syracuse NY