• Country
• Great Britain (UK)

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

• Year
• 1967 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 180986

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

• Number of Transistors
• 7

• Semiconductors
• AF117 AF117 AF117 OC71 OC81D OC81 OC81

• Main principle
• Superheterodyne (common); ZF/IF 470 kHz; 3 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

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

• Power type and voltage
• Dry Batteries / 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical

• Power out
• 1 W (unknown quality)

• from Radiomuseum.org
• Model: B818A - Murphy Radio Ltd.; Welwyn

• Notes
• MW bandspread for radio Luxembourg. Battery type PP9. Electricaly the same as the late production B818.

• Source of data
• -- Schematic

• Literature/Schematics (1)
• Radio And Television Servicing books (R&TVS)

• Author
• Model page created by Keith Staines. See "Data change" for further contributors.

• Other Models

• Here you find 366 models, 300 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