9R-4J; Trio-Kenwood (ID = 82243) Amateur-R
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9R-4J; Trio-Kenwood (ID = 52045) Amateur-R
Trio-Kenwood: 9R-4J [Amateur-R] ID = 52045 800x533
Select picture or schematic to display from thumbnails on the right and click for download.
For model 9R-4J, Trio-Kenwood Electronic Inc.; Komagane
Country:  Japan
Manufacturer / Brand:  Trio-Kenwood Electronic Inc.; Komagane
alternative name
Trio Corp.
Year: 1959–1963 Category: Amateur-Receiver (amateur bands, may include broadcast bands)
Valves / Tubes 9: 6BD6 6BE6 6BE6 6BD6 6BD6 6AV6 6AV6 6AR5 5Y3GT
Main principle Superhet with RF-stage; ZF/IF 455 kHz
Wave bands Broadcast plus more than 2 Short Wave bands.
Power type and voltage Alternating Current supply (AC) / 110/220 Volt
Loudspeaker - This model requires external speaker(s).
Power out
from Model: 9R-4J - Trio-Kenwood Electronic Inc.;
Material Metal case
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 395 x 210 x 305 mm / 15.6 x 8.3 x 12 inch

AM/CW with BFO, ANL, AVC/MVC. In Europe under the Jennen-Label and in the US-Market as Lafayette HE-10. Kit-Form avaliable. Also as OTRA 9R-4J. Looks very similar to Hallicrafters S-38 (which has fewer tubes and no RFstage). Needs a speaker with output-transformer!

Net weight (2.2 lb = 1 kg) 9 kg / 19 lb 13.2 oz (19.824 lb)
External source of data Eilert Menke
Mentioned in Shortwave Receivers - Past & Present (3rd ed.)

Model page created by a member from D. See "Data change" for further contributors.

All listed radios etc. from Trio-Kenwood Electronic Inc.; Komagane
Here you find 804 models, 740 with images and 214 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.

Collection of a member from D
Collection of a member from D


Forum contributions about this model
Trio-Kenwood: 9R-4J
Threads: 1 | Posts: 1
Hits: 2005     Replies: 0
trio-kenwo: 9R-4J;
Jan Terranea

This radio is also named: OTRA 9R-4J.

Under that name this radio was imported in the Netherlands by the firm "Jennen" in Amsterdam.

with reference to the book: Hoe word ik zendamateur, published by "de Muiderkring - Bussum".


Trio-Kenwood: 9R-4J
End of forum contributions about this model