100 Watt Broadcast Band Transmitter

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

Données
Forum
Images
Collections

  • Année
  • 1936
  • Catégorie
  • Émetteur commercial (pas d'émetteur/récepteur)
  • Radiomuseum.org ID
  • 327875

 Spécifications techniques

  • No. de tubes
  • 8
  • Principe général
  • Émetteur
  • Gammes d'ondes
  • PO uniquement
  • Tension / type courant
  • Alimentation Courant Alternatif (CA)
  • Matière
  • Boitier métallique
  • De Radiomuseum.org
  • Modèle: 100 Watt Broadcast Band Transmitter - Colmovox Brand, Colville-Moore
  • Forme
  • Gros appareil industriel ou militaire (> 20 kg)
  • Remarques

  • 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.

  • Littérature
  • -- Original prospect or advert (The Broadcasting Business Yearbook 1937, Page 130.)
  • Auteur
  • Modèle crée par Gary Cowans. Voir les propositions de modification pour les contributeurs supplémentaires.

 Collections | Musées | Littérature

 Forum