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Parrot KR-4S1

ID = 216329

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Parrot KR-4S1 ; Koyo Denki Co. Ltd.; (ID = 2157816) Radio

Parrot KR-4S1 ; Koyo Denki Co. Ltd.; (ID = 2157818) Radio

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Parrot KR-4S1 ; Koyo Denki Co. Ltd.; (ID = 2157821) Radio

Parrot KR-4S1 ; Koyo Denki Co. Ltd.; (ID = 2157822) Radio

Parrot KR-4S1 ; Koyo Denki Co. Ltd.; (ID = 2157823) Radio

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Koyo Denki Co. Ltd.;: Parrot KR-4S1 [Radio] ID = 2157816 1400x1050

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For model Parrot KR-4S1, Koyo Denki Co. Ltd.; Kodaira, Tokyo:
JAP; Koyo Denki Co. Ltd.; Kodaira, Tokyo; Parrot KR-4S1 - 1

Country:

Japan

Manufacturer / Brand:

Koyo Denki Co. Ltd.; Kodaira, Tokyo

Year: 1954 ??

Category: Broadcast Receiver - or past WW2 Tuner

Valves / Tubes

4: 1V6 1AH4 or 5678 1AG5 1AG4

Main principle	Superheterodyne (common)
Wave bands	Broadcast only (MW).
Details
Power type and voltage	Dry Batteries / 45 & 1,5 Volt
Loudspeaker	Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.5 inch = 6.4 cm
Power out	0.4 W (unknown quality)
from Radiomuseum.org	Model: Parrot KR-4S1 - Koyo Denki Co. Ltd.; Kodaira,
Material	Plastics (no bakelite or catalin)
Shape	Very small Portable or Pocket-Set (Handheld) < 8 inch.
Dimensions (WHD)	128 x 83 x 38 mm / 5 x 3.3 x 1.5 inch
Notes	Koyo AM Portable Tube Radio Model Parrot KR-4S1. Tuning Range 540 - 1600 KC, Earphones jack. Different colours known (white, blue and red). On the sticker schematic, tube types for both, the KR-4S1 and KR-4S2 are actually: 1V6, 1AH4-sF or 5678, 1AG5-sF and 1AG4. There is an other sticker schematic which shows only the KR-4S1 with only slight differences. The radio is also known as Parrot KR-451, the letter S being read as a 5, which is wrong.
Net weight (2.2 lb = 1 kg)	0.535 kg / 1 lb 2.9 oz (1.178 lb)

Model page created by Franz Scharner. See "Data change" for further contributors.

All listed radios etc. from Koyo Denki Co. Ltd.; Kodaira, Tokyo
Here you find 52 models, 48 with images and 8 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.

Collection of Peter Kahlich (D)

Collection of Richard Saeta (USA)