• Country
• Japan

• Manufacturer / Brand
• OKI Electric Industry Co. Ltd. (Meikosha); Tokyo

• Year
• 1964 ??

• Category
• Military Transceiver (TRX)

• Radiomuseum.org ID
• 333817

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Transceiver

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / NiCd: 5 x 1.2 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3 cm = 1.2 inch

• Material
• Metal case

• from Radiomuseum.org
• Model: Manpack Radio Set - SSB Walkie-Talkie - Transmisor-Receptor TRP-4A - OKI Electric Industry Co. Ltd.

• Shape
• Boatanchor (heavy military or commercial set >20 kg).

• Dimensions (WHD)
• 270 x 380 x 140 mm / 10.6 x 15 x 5.5 inch

• Notes

• Military HF Tranceiver, Manpack Radio Set, SSB Walkie-Talkie TRP-4A
  6 Crystal set channels, working between 2.5 to 7.8 MHz
  Transmitting power: A3H 1 W, A3J and A1 3 W.

  ---

  Se trata de un transceptor mochila a bateria o generador de mano
  es estrictamente fabricado para operaciones en el campo de batalla
  su caja es totalmente en aluminio pintado.

  Posee 6 canales presintonizados a cristales para frecuencia de trabajo entre 2.5 y 7.8 MHz

  Viene equipado con un telefono de mano (microfono, auricular y PTT) y un manipulador telegrafico  los tipos de modulacion son A1, A3 (solo recepcion), A3H y A3J

• Net weight (2.2 lb = 1 kg)
• 10 kg / 22 lb 0.4 oz (22.026 lb)

• Author
• Model page created by Leandro Andres Masutti. See "Data change" for further contributors.

• Other Models

• Here you find 9 models, 8 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from OKI Electric Industry Co. Ltd. (Meikosha); Tokyo