8 Transistor TR-84

• Country
• Japan

• Manufacturer / Brand
• Sony Corporation; Tokyo

• Year
• 1959/1960

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 88535

• Picture
• Schematics

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

• Number of Transistors
• 8

• Semiconductors
• 2T734 2T732 2T750 2T750 2T852 2T650 2T69 2T69

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz; 3 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 3 x 1.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3.5 inch = 8.9 cm

• Power out
• 0.2 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 8 Transistor TR-84 - Sony Corporation; Tokyo

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

• Dimensions (WHD)
• 187 x 103 x 43 mm / 7.4 x 4.1 x 1.7 inch

• Notes
• The complete circuit diagram available here belongs to the first series. Later in the final stage the two NPN were replaced by two PNP transistors (see partial circuit diagram).

• Net weight (2.2 lb = 1 kg)
• 0.670 kg / 1 lb 7.6 oz (1.476 lb)

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 22, 1962

• Mentioned in
• FS 1959 Heft 22 S.536

• Literature/Schematics (1)
• Funkschau (Antique Radio Magazine n.37, May 2000, page 16 and n.65, February-March 2005, page 62. In Italian.)

• Literature/Schematics (2)
• Collector's Guide To TrR1 Bunis trans.94 (Model information on page 256)

• Literature/Schematics (3)
• Transistor Radios (Model information and picture on page 104)

• Author
• Model page created by Egon Penker. See "Data change" for further contributors.

• Other Models

• Here you find 3952 models, 3812 with images and 954 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sony Corporation; Tokyo