• Country
• Great Britain (UK)

• Manufacturer / Brand
• Pye Ltd., Radio Works; Cambridge

• Year
• 1959

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 102382

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

• Number of Transistors
• 6

• Semiconductors
• Tr_XXXX or. Yellow_Circle

• Main principle
• Superheterodyne (common); ZF/IF 470 kHz; 2 AF stage(s)

• Tuned circuits
• 5 AM circuit(s)

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

• Power type and voltage
• Dry Batteries / 6 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm

• from Radiomuseum.org
• Model: Q5 [Early ] - Pye Ltd., Radio Works;

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes

• Transistors: "White Circle" numbers 1, 2, 3, 4, 5, 5. Later production used "Yellow Circle" transistors & a 9 volt battery.

  The Invicta version is the Model 31, not to be confused with the 1948 mains Invicta 31

• Circuit diagram reference
• Radio and TV Servicing books (R&TVS) book

• Mentioned in
• -- Original-techn. papers.

• Author
• Model page created by Peter Hoddow. See "Data change" for further contributors.

• Other Models

• Here you find 620 models, 476 with images and 342 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Pye Ltd., Radio Works; Cambridge