Radio Set SCR-274-N Command Radio

• Paese
• USA (Stati Uniti d'America)

• Produttore / Marca
• MILITARY U.S. (different makers for same model)

• Anno
• 1940

• Categoria
• Ricetrasmettitore militare

• Radiomuseum.org ID
• 312216

• Immagini
• Schemi

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• Principio generale
• Ricetrasmettitore

• Gamme d'onda
• Onde corte (solamente OC)

• Tensioni di funzionamento
• Batteria di accumulatori, per tutto (es. autoradio, radio amatoriali) / 28 Volt

• Altoparlante
• - Per cuffie o amplificatori esterni

• Materiali
• Mobile di metallo

• Radiomuseum.org
• Modello: Radio Set SCR-274-N [Command Radio] - MILITARY U.S. different makers

• Forma
• Diverse forme (descritte nelle note).

• Annotazioni

• Radio Set SCR-274-N, Command Radio.

  Communications equipment in modular construction for aircraft use.

  Receivers (Suffix A: 8000 Ohms output; Suffix B 8000 / 600 Ohms output) (powered by Dynamotor DM-32-A) (Adaptor FT-230-A for remote control, Adaptor FT-260-A for local control).

  • BC-453-A / B: 190 - 550 kHz
  • BC-454-A / B: 3.0 - 6.0 MHz
  • BC-455-A / B: 6.0-9.1 MHz
  • BC-946-B: 0.52 - 1.5 MHz

  Receiver Control Box

  • BC-450-A: to control three receivers

  Transmitters:

  • BC-696-A: 3.0 - 4.0 MHz
  • BC-457-A: 4.0 - 5.3 MHz
  • BC-458-A: 5.3 - 7.0 MHz
  • BC-459-A: 7.0 - 9.1 MHz

  Modulator Unit (powered by Dynamotor DM-33-A)

  • BC-456-A (to modulate several transmitters)

  Radio Control Box (to control up to four transmitters)

  • BC-451-A

  Antenna Relay Unit

  • BC-442-A

  Matching headsets / microphones

  • Microphone T-17
  • Headset HS-33

  Matching Test Sets

  • RC-54-A
  • RC-55-A

  The "Type K Command Radio" had been developed in 1936/37 as a modular communications system for Aircraft use (with separate receivers for separate wavebands, separate transmitters, control boxes and accessories),  and had been tested and improved for military use from 1939 on. In 1940, the U.S. Navy started  installing the equipment as RAT / RAV sets and the U.S. Army Air Corps introduced the equipment as SCR-274-N after May 1940.

  From these sets and it's successors AN/ARC-5 some 1,450,000 sets have been produced. Many of these have been sold as surplus and modified by hams in the postwar years, so sets in original condition are becoming rare.

   

• Bibliografia
• -- Original-techn. papers. (AN 08-40SCR274-2)

• Autore
• Modello inviato da Martin Bösch. Utilizzare "Proponi modifica" per inviare ulteriori dati.

• Altri modelli

• In questo link sono elencati 405 modelli, di cui 357 con immagini e 211 con schemi.
  Elenco delle radio e altri apparecchi della MILITARY U.S. (different makers for same model)