• Country
• Japan

• Manufacturer / Brand
• Sony Corporation; Tokyo

• Year
• 1955

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 71100

• Number of Transistors
• 5

• Semiconductors

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries

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

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: TR-52 - Sony Corporation; Tokyo

• Notes
• In April 1955 SONY has built a prototype of it's first Transistor Radio, looking like United Nations Building - but TR-52 (TR52, TR 52) was never really released because of the front-plate "ungluing". U.N. is the nickname.

• Author
• Model page created by Ernst Erb. See "Data change" for further contributors.

• Other Models

• Here you find 3971 models, 3831 with images and 955 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sony Corporation; Tokyo