• Anno
  • 1937
  • Categoria
  • Radio (o sintonizzatore del dopoguerra WW2)
  • Radiomuseum.org ID
  • 167209

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 Specifiche tecniche

  • Numero di tubi
  • 5
  • Numero di transistor
  • Principio generale
  • Supereterodina con stadio RF; ZF/IF 462.5 kHz; 2 Stadi BF
  • N. di circuiti accordati
  • 7 Circuiti Mod. Amp. (AM)
  • Gamme d'onda
  • Onde medie (OM) e corte (OC).
  • Tensioni di funzionamento
  • Batteria di accumulatori, per tutto (es. autoradio, radio amatoriali) / 6 Volt
  • Altoparlante
  • AP magnetodinamico (magnete permanente e bobina mobile)
  • Materiali
  • Mobile in legno
  • Radiomuseum.org
  • Modello: 21 - Briton Electrical & Radio Pty.
  • Forma
  • Console, con gambe d'appoggio basse (< 50%).
  • Annotazioni
  • 5 valve, dualwave superhet powered from a 6 volt battery.

    Of primary interest to the countryman is model 21, designed for vibrator operation. The performance is quite on a parallel with the A.C. model, and the vibrator cannot be heard in action It was found that an earth connection was necessary to ensure absolute vibrator silence, but even minus the earth there is only the faintest trace of the power unit in action, even at 16 metres. Two-volt battery valves are employed, IC4 (R.F.). KK2 (octode frequency converter), IC4 (1.F.), IK6 (duo-diode-pentode demodulator) and IF4 (pentode). The speaker is a Magnavox 254 M of permag. type.
    Power for the whole receiver is taken from a six-volt accumulator (this being the voltage necessary with any vibrator unit), and the vibrator is housed in a rubber-mounted metal box on the bottom shelf of the cabinet away from the chassis. Dial lamps are switched off as required by an alternative position of the wave-change switch, which is also combined to switch the receiver on and off. In action this receiver consumes under one ampere. It sells at 36 guineas.
    The Bulletin Sep 22, 1937, Page 41

  • Prezzo nel primo anno
  • 36.00 Aus£
  • Riferimenti schemi
  • Australian Official Radio Service Manual Vol. I I
  • Autore
  • Modello inviato da Stuart Irwin. Utilizzare "Proponi modifica" per inviare ulteriori dati.

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