• Anno
  • 1937–1939 ?
  • Categoria
  • Radio (o sintonizzatore del dopoguerra WW2)
  • Radiomuseum.org ID
  • 286219
    • alternative name: National Toy Co.
    • Brand: Thrillbox

 Specifiche tecniche

  • Principio generale
  • A circuiti accordati (amplif. diretta) senza reazione
  • Gamme d'onda
  • Solo onde medie (OM).
  • Tensioni di funzionamento
  • Fornita mediante altra unità o unità principale.
  • Altoparlante
  • - Per cuffie o amplificatori esterni
  • Materiali
  • Mobile di metallo
  • Radiomuseum.org
  • Modello: High Fidelity TRF Unit - National Company; Cambridge &
  • Forma
  • Rack
  • Dimensioni (LxAxP)
  • 0 x 3.5 x 0 inch / 0 x 89 x 0 mm
  • Annotazioni
  • The National High Fidelity TRF Unit is a single signal receiver. It was available as a kit. There are three models, covering the ranges of 540-875 KHz, 740-1230 KHz, and 1100-1700 KHz. Customers could choose the one frequency in the range that they desired. National recommended using four, or more, of these receivers, set to different frequencies, and using a push switch or relay system to select between the stations.

    The following components make up the unit: DLC (drilled only) or DLCA (drilled with sockets and terminals) chassis, DLPS (1/8-inch steel) or DLPA (3/16-inch aluminum) panel, and DLT transformers (four required per unit). 

  • Bibliografia
  • National Catalog No. 280 - 1938
  • Autore
  • Modello inviato da Wayne Childress. Utilizzare "Proponi modifica" per inviare ulteriori dati.

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