Transistor Radios Around the World

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Before '54 --- North America --- Western Europe --- Japan and Pacific --- East Bloc and USSR

1957 Koyo Weston KR-6TS1T

Coat pocket radio, thermoplastic cabinet
5 3/8 x 3 1/2 x 1 5/8 inches / 137 x 89 x 41 mm
Seven transistors (Texas Instruments, 2x 2N185, 2N238, 2N252, 2N253, 2N254); one diode (Raytheon, 1N295)
Superheterodyne circuit
Four 1.5-volt cells
Manufactured by Koyo Denki Co. Ltd.; Tokyo

The earlier KR-6TS1 version used NEC transistors — this later KR-6TS1T model uses Texas Instruments transistors — see the chassis photos below. This example was produced in late 1957.

Koyo Weston KR-6TS1T

chassis photo 1 — click on the photo for a larger image

chassis photo 2 — click on the photo for a larger image

inside back cover

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