• Country
• Great Britain (UK)

• Manufacturer / Brand
• Murphy Radio Ltd.; Welwyn Garden City

• Year
• 1935

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 78528

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 5

• Valves / Tubes
• AC/TP AC/VP1 V914 AC2/Pen U12

• Main principle
• Superheterodyne (common); ZF/IF 117 kHz

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• Alternating Current supply (AC) / 200-250 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Wooden case

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

• Shape
• Tablemodel, high profile (upright - NOT Cathedral nor decorative).

• Dimensions (WHD)
• 16 x 17 x 9.75 inch / 406 x 432 x 248 mm

• Notes

• 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.

• Source of data
• Radio! Radio!

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

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

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• Other Models

• Here you find 366 models, 299 with images and 234 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Murphy Radio Ltd.; Welwyn Garden City