• Paese
• Gran Bretagna (Regno Unito)

• Produttore / Marca
• Murphy Radio Ltd.; Welwyn Garden City

• Anno
• 1935

• Categoria
• Radio (o sintonizzatore del dopoguerra WW2)

• Radiomuseum.org ID
• 78528

Clicca sulla miniatura dello schema per richiederlo come documento gratuito.

• Numero di tubi
• 5

• Valvole
• AC/TP AC/VP1 V914 AC2/Pen U12

• Principio generale
• Supereterodina (in generale); ZF/IF 117 kHz

• N. di circuiti accordati
• 7 Circuiti Mod. Amp. (AM)

• Gamme d'onda
• Onde medie (OM) e onde lunghe (OL).

• Tensioni di funzionamento
• Alimentazione a corrente alternata (CA) / 200-250 Volt

• Altoparlante
• AP elettrodinamico (bobina mobile e bobina di eccitazione/di campo)

• Materiali
• Mobile in legno

• Radiomuseum.org
• Modello: A26 - Murphy Radio Ltd.; Welwyn

• Forma
• Soprammobile verticale (sviluppato in altezza; no cattedrale, sin decorazioni).

• Dimensioni (LxAxP)
• 16 x 17 x 9.75 inch / 406 x 432 x 248 mm

• Annotazioni

• The " 26 " Series receivers were scheduled for release in April 1935.

  Technical details of the '' 26 '' receivers are now available, and it is revealed that the reduction in prices has been brought about by the acceptance of a lower overall gain as compared with the "24" series. As the latter provided an ample margin of range for most people's requirements, the reduced noise level on distant stations in the new receivers is a point in their favor. The principal change in the circuit is to be found in the second detector stage in which a double diode is now used without the triode amplifier which usually accompanies it. The omission of amplification in the AVC circuit will affect the behavior of the set only for very large signal inputs, while on the LF side the reduced gain has made the heterodyne whistle filter of the A24 unnecessary.

  The cost has therefore been reduced by a decrease in the number and not in the quality of the chassis components. Other changes in the A26 include the extension of the medium-waveband down to 195 metres, the incorporation of the on-off switch with the volume control instead of the wave-range switch, and the omission of the gramophone jack. In connection with the latter, it is proposed to issue an instruction to dealers indicating how gramophone connections may be made when there is a specific demand for this feature.
  Wireless World April 5, 1935, Page 339

  Cabinet design: R.D.Russell.

• Fonte dei dati
• Radio! Radio!

• Bibliografia
• Wireless World (The), London (WW, 79) (April 5, 1935, Page 339)

• Letteratura / Schemi (1)
• Trader Service Sheet (suppl. of Wireless & El. Trader, etc.) (740)

• Autore
• Modello inviato da Konrad Birkner † 12.08.2014. Utilizzare "Proponi modifica" per inviare ulteriori dati.

• Altri modelli

• In questo link sono elencati 366 modelli, di cui 299 con immagini e 234 con schemi.
  Elenco delle radio e altri apparecchi della Murphy Radio Ltd.; Welwyn Garden City