All Transistor - 4 Transistor Portable Radio
Yuko Electronic Co., Ltd.; Tokyo
- Country
- Japan
- Manufacturer / Brand
- Yuko Electronic Co., Ltd.; Tokyo
- Year
- 1958 ?
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 318003
from an ended auction at ebay.com
Picture from Worthpoint.
ebay.com_174106621027, seller e**h65
ebay.com_174106621027, seller e**h65
circit diagram
- Number of Transistors
- 4
- Main principle
- ZF/IF 455 kHz; 2 AF stage(s)
- Tuned circuits
- 4 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Dry Batteries / VS-300: 1 x 9 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: All Transistor - 4 Transistor Portable Radio - Yuko Electronic Co., Ltd.;
- Shape
- Very small Portable or Pocket-Set (Handheld) < 8 inch.
- Dimensions (WHD)
- 5 x 3 x 2 inch / 127 x 76 x 51 mm
- Notes
-
Although the circuit diagram says 2NJ8A, 2NJ5A, 2NJ9D, 2NJ9A made by TEN,
the shown circuit board uses 2S52, 2S45, 2S44, 2S56, 1N60 semiconductors by Toshiba.See also these models in different enclosures but with same circuit board
Stantex TR-4 and Harpers 4 Transistor
- Net weight (2.2 lb = 1 kg)
- 0.350 kg / 0 lb 12.3 oz (0.771 lb)
- Author
- Model page created by Mike Bacon. See "Data change" for further contributors.
- Other Models
-
Here you find 12 models, 12 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Yuko Electronic Co., Ltd.; Tokyo
Collections
The model All Transistor - 4 Transistor Portable Radio is part of the collections of the following members.