100 Watt Broadcast Band Transmitter

Colmovox (Brand), Colville-Moore Wireless Supplies Ltd.; Sydney NSW

Dati
Forum
Immagini
Collezioni

  • Anno
  • 1936
  • Categoria
  • Trasmettitore commerciale (TX non ricetrasmettitore)
  • Radiomuseum.org ID
  • 327875

 Specifiche tecniche

  • Numero di tubi
  • 8
  • Principio generale
  • Trasmettitore
  • Gamme d'onda
  • Solo onde medie (OM).
  • Tensioni di funzionamento
  • Alimentazione a corrente alternata (CA)
  • Materiali
  • Mobile di metallo
  • Radiomuseum.org
  • Modello: 100 Watt Broadcast Band Transmitter - Colmovox Brand, Colville-Moore
  • Forma
  • Boatanchor (pesante apparecchio militare o commerciale, > 20 kg)
  • Annotazioni

  • TECHNICAL DESCRIPTION OF 100 WATT BROADCAST TRANSMITTER:

    The transmitter is a 4-stage crystal transmitter, built and designed by Colville Wireless Equipment Co., and installed in December 1936.

    Crystal oscillator is an E424 valve, crystal A.T. cut, 1st Buffer QB05/15, 2nd Buffer C2/75, and the final amplifier is a TB2/250. Modulated by a pair of MC2/200's in push-pull, sub modulators a pair of 250's in push pull.

    Studio equipment consists of velocity microphones and crystal pick-ups. Aerial system is a vertical radiator 150 feet high, gives the station a remarkable field strength (approx. 60 millivolts per metre).

    A cathode ray oscilloscope is installed at the station for checking purposes.

    The input power is taken from the town 3 phase power supply and uses 3 phase full wave rectification for plate and filament supply.

    Extracted from The Broadcasting Business Yearbook 1937, Page 130.

  • Bibliografia
  • -- Original prospect or advert (The Broadcasting Business Yearbook 1937, Page 130.)
  • Autore
  • Modello inviato da Gary Cowans. Utilizzare "Proponi modifica" per inviare ulteriori dati.

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