2 R-28

Sony Corporation; Tokyo

Data

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Country
Japan

Manufacturer / Brand
Sony Corporation; Tokyo

Year
1968

Category
Broadcast Receiver - or past WW2 Tuner

Radiomuseum.org ID
107887

Picture
Schematics

2 R-28; Sony Corporation; (ID = 987453) Radio — Sony Corporation; 2 R-28 (3)

2 R-28; Sony Corporation; (ID = 987454) Radio — Sony Corporation; 2 R-28 (3)

2 R-28; Sony Corporation; (ID = 987455) Radio — Sony Corporation; 2 R-28 (3)

2 R-28; Sony Corporation; (ID = 2829030) Radio — Sony Corporation; 2 R-28 (3)

2 R-28; Sony Corporation; (ID = 2270037) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 2270038) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 2270036) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 2270040) Radio — Sony Corporation; 2 R-28 (1)
With leather case

2 R-28; Sony Corporation; (ID = 2270039) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 423803) Radio — Sony Corporation; 2 R-28 (2)

2 R-28; Sony Corporation; (ID = 423806) Radio — Sony Corporation; 2 R-28 (2)

2 R-28; Sony Corporation; (ID = 262998) Radio — Sony Corporation; 2 R-28 (2)

2 R-28; Sony Corporation; (ID = 423805) Radio — Sony Corporation; 2 R-28 (2)

2 R-28; Sony Corporation; (ID = 588505) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 700041) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 700044) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 1451612) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 1451646) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 1451648) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 1451649) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 1514284) Radio — Sony Corporation; 2 R-28 (2)

2 R-28; Sony Corporation; (ID = 1514879) Radio — Sony Corporation; 2 R-28 (2)

2 R-28; Sony Corporation; (ID = 1514880) Radio — Sony Corporation; 2 R-28 (2)

2 R-28; Sony Corporation; (ID = 1514881) Radio — Sony Corporation; 2 R-28 (2)

2 R-28; Sony Corporation; (ID = 1515125) Radio — Sony Corporation; 2 R-28 (2)

2 R-28; Sony Corporation; (ID = 1515126) Radio — Sony Corporation; 2 R-28 (2)

2 R-28; Sony Corporation; (ID = 1754299) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 1754300) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 1754302) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 1905913) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 2010404) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 2010405) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 2010406) Radio — Sony Corporation; 2 R-28 (1)

2 R-28; Sony Corporation; (ID = 2010407) Radio — Sony Corporation; 2 R-28 (1)

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

Technical Specifications

Number of Transistors
6

Semiconductors
2SA201 2SA198 2SA198 2SB270 2SB187 2SB187 1S426

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 / AA: 2 x 1.5 Volt

Loudspeaker
Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

Power out
0.2 W (unknown quality)

Material
Plastics (no bakelite or catalin)

from Radiomuseum.org
Model: 2 R-28 - Sony Corporation; Tokyo

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

Dimensions (WHD)
61 x 94 x 31 mm / 2.4 x 3.7 x 1.2 inch

Notes
6 Transistor and 1 diode superheterodyne ... Frequency Range MW 530 - 1605 kc (5660 187 m)

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

Source of data
Handbuch VDRG 1968/1969

Mentioned in
-- Collector info (Sammler)

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

Other Models
Here you find 3913 models, 3773 with images and 947 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Sony Corporation; Tokyo

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