789

Stromberg-Carlson (Australasia) Pty. Ltd. Sydney

Dati
Forum
Immagini
Collezioni

  • Anno
  • 1937
  • Categoria
  • Radio (o sintonizzatore del dopoguerra WW2)
  • Radiomuseum.org ID
  • 165398

Clicca sulla miniatura dello schema per richiederlo come documento gratuito.

 Specifiche tecniche

  • Numero di tubi
  • 7
  • Principio generale
  • Supereterodina con stadio RF; ZF/IF 392 kHz; 3 Stadi BF
  • N. di circuiti accordati
  • 7 Circuiti Mod. Amp. (AM)
  • Gamme d'onda
  • Onde medie (OM) e corte (OC).
  • Tensioni di funzionamento
  • Batterie (di accumulatori e/o a secco) / 135 & 2 Volt
  • Altoparlante
  • AP magnetodinamico (magnete permanente e bobina mobile) / Ø 10 inch = 25.4 cm
  • Materiali
  • Mobile in legno
  • Radiomuseum.org
  • Modello: 789 - Stromberg-Carlson Australasia
  • Forma
  • Console, con gambe d'appoggio basse (< 50%).
  • Annotazioni

  • Model 789 Stromberg-Carlson Seven-Valve DW battery powered Superhet.

    High sensitivity and low noise level are outstanding features of the latest Model 789 Stromberg-Carlson seven-valve dual-wave release.

    Exceptionally high sensitivity is assured by the use of a 1A4 as RF amplifier, and of two stages of intermediate frequency amplification (also using 1A4's). A KK2 is used as a mixer, with a 1B5 as a second detector, AVC, and first audio stage feeding a 30 driver with a KDDI as class "B" power output stage.

    Throughout the entire design, particular attention has been paid to keeping current consumption as low as possible. A special switch is also incorporated, enabling the dial lights to be extinguished when the set is in operation, further reducing battery drain.

    An edge-lit vertical straight line tuning dial, identical to that used in the eight and nine valve A.C. receivers, is fitted. The stations are marked in large clear-cut figures and are divided vertically into States, while the four international overseas channels are grouped on the left-hand side of the dial.

    The tuning range is from 175-570 metres on the broadcast band and 16.8 to 51 metres on the short waves. A large control knob gives speedy, easy tuning, having dual dial ratios of sixty and ten to one.

    A 10" dust-proof permanent magnetic dynamic speaker is fitted, which, combined with the outstanding acoustic properties of the Concert Grand Cabinet, gives the  789 a high degree of tonal quality and faithfulness of reproduction under a wide range of atmospheric conditions and · geographical obstructions.

    An additional feature is the variable tone control.
    Controls from left to right are as follows:-

    • On-off and dial lights switch,
    • Volume
    • Tone
    • station selector
    • wave changer and gram switch.

    Altogether, the 789 is a dual-wave battery receiver that will fill the demand for a deluxe radio for the man on the land.

    Australasian Radio World, Sep 1, 1937. Page 36.

     

  • Riferimenti schemi
  • Australian Official Radio Service Manual Vol. I
  • Bibliografia
  • Australasian Radio World, Sep 1, 1937. Page 36.
  • Autore
  • Modello inviato da Stuart Irwin. Utilizzare "Proponi modifica" per inviare ulteriori dati.

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