Transistor 6 TH-621

• Country
• Japan

• Manufacturer / Brand
• Hitachi Ltd.; Tokyo

• Year
• 1957/1958

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 78422

• • alternative name: Hitachi Sales Corp. of America

• Picture
• Schematics

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

• Number of Transistors
• 6

• Semiconductors
• HJ-23D HJ-22D HJ-22D HJ-15 HJ-17D HJ-17D

• 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 / 1 x 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.5 inch = 6.4 cm

• Power out
• 0.06 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Transistor 6 TH-621 - Hitachi Ltd.; Tokyo

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

• Dimensions (WHD)
• 72 x 113 x 32 mm / 2.8 x 4.4 x 1.3 inch

• Notes

• Similar to the models reported under Standard SR-F22.

  Laut Prospekt konnte zusätzlich ein "Lautsprecher zum Ansetzen" für das Gerät zum Preis von 48.-DM erworben werden

  Sold in Australia during 1959 for £29/8/-.

• Net weight (2.2 lb = 1 kg)
• 0.3 kg / 0 lb 10.6 oz (0.661 lb)

• Price in first year of sale
• 179.00 DM

• Mentioned in
• Beitman Radio Diagrams, Vol. 20, 1960

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 3-59, Set 433, Folder 10)

• Literature/Schematics (2)
• J.R. Publications Transistor Radio Service Handbook (E Series Handbook Vol. 1, Page H7.)

• Author
• Model page created by Trev Levick. See "Data change" for further contributors.

• Other Models

• Here you find 1057 models, 947 with images and 242 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hitachi Ltd.; Tokyo