Radiogram A28RG

Murphy Radio Ltd.; Welwyn Garden City

Dati
Forum
Immagini
Collezioni

  • Anno
  • 1935
  • Categoria
  • Radio (o sintonizzatore del dopoguerra WW2)
  • Radiomuseum.org ID
  • 336445

Clicca sulla miniatura dello schema per richiederlo come documento gratuito.

 Specifiche tecniche

  • Numero di tubi
  • 9
  • Principio generale
  • Supereterodina (in generale); ZF/IF 119 kHz
  • Gamme d'onda
  • Onde medie (OM) e onde lunghe (OL).
  • Particolarità
  • Giradischi (non cambiadischi)
  • Tensioni di funzionamento
  • Alimentazione a corrente alternata (CA) / 240 Volt
  • Altoparlante
  • AP elettrodinamico (bobina mobile e bobina di eccitazione/di campo)
  • Materiali
  • Mobile in legno
  • Radiomuseum.org
  • Modello: Radiogram A28RG - Murphy Radio Ltd.; Welwyn
  • Forma
  • Console, con gambe d'appoggio basse (< 50%).
  • Annotazioni

  • 9-valve, AC-powered, superhet radiogram with AFC and dynamic noise suppression.

    The superheterodyne circuit comprises a signal-frequency HF amplifier, frequency changer, IF stage, double-diode rectifier and AVC valve, LF amplifier with tone correction and inter-station noise suppression, and a pentode output valve.

    There are, in addition, two valves, whose special function is to correct reasonable errors of tuning on the part of the user. They are a double diode rectifier and a pentode valve arranged to shift slightly the tracking of the oscillator in the event of careless adjustment of the tuning control. There should be little excuse for inaccurate tuning, however, for the new tuning scale, let into the top of the cabinet, is of an improved type, quite free from parallax errors.

    The medium and longwave pointers work in slots in the same plane as the scale, which, in addition to wavelength calibrations, now carries a selection of station names.
    Wireless Word, August 30, 1935 Advertisement Page 259.

    For the noise reduction description, see Forum Article.

    The cabinet of Indian Laurel, Walnut & Pear Tree veneers.

  • Prezzo nel primo anno
  • 24.50 GB £
  • Bibliografia
  • - - Manufacturers Literature
  • Autore
  • Modello inviato da Gary Cowans. Utilizzare "Proponi modifica" per inviare ulteriori dati.

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