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Country:  Japan
Manufacturer / Brand:  Sony Corporation; Tokyo
Year: 1956 Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 7:
Wave bands Broadcast only (MW).
Power type and voltage Storage and/or dry batteries
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
Power out
from Model: TR-72MA - Sony Corporation; Tokyo
Material Modern plastics (no Bakelite or Catalin)
Notes In March 1956 SONY produced two models similar to TR-72 for the Tokyo Mitsukoshi department store, the TR-72MA and the TR-72MB. TR-72MA and TR-72MB are similar to TR-72. This information has been taken from:

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

All listed radios etc. from Sony Corporation; Tokyo
Here you find 3524 models, 3264 with images and 747 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.