TRW-621

• Country
• Japan

• Manufacturer / Brand
• Sony Corporation; Tokyo

• Year
• 1960

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 107873

• Picture
• Schematics

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

• Number of Transistors
• 6

• Semiconductors
• 2SC73 2SC76 2SC76 2SD64 2SD65 2SD65

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6 cm = 2.4 inch

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: TRW-621 - Sony Corporation; Tokyo

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

• Dimensions (WHD)
• 65 x 112 x 30 mm / 2.6 x 4.4 x 1.2 inch

• Notes

• With clock. It features a beautiful built in Seiko watch with alarm! Author Enrico Tedeschi suggests in his book 'The Magic of Sony' that the TRW-621 was the first radio with a built in watch. It was probably the first transistor radio with this feature. Sony released another watch radio in 1961/62, the TRW-625 was smaller than the TRW-621 and the watch was built into the center of the speaker grill! In 1962 Matsushita released the National T-98 'Portalarm' which is very similar in appearance to the Sony TRW-621 it also uses a Seiko watch. TRW-621 also features a recessed stand for lounging, a gold metallic face and a textured metal speaker grill. The front half of the cabinet is colored ivory and the back is coral colored. This radio can also be found colored black with a coral back and ivory with a grey back.

  See also Alpha Seven Transistor and Regalia Seven Transistor.

• Net weight (2.2 lb = 1 kg)
• 0.2 kg / 0 lb 7 oz (0.441 lb)

• Mentioned in
• -- Collector info (Sammler)

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 566 Folder 14 2-1962)

• Literature/Schematics (2)
• - - Data from my own collection

• Author
• Model page created by Peter Hoddow. See "Data change" for further contributors.

• Other Models

• Here you find 3991 models, 3852 with images and 956 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sony Corporation; Tokyo