• Country
• Great Britain (UK)

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

• Year
• 1928/1929

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 220035

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

• Number of Tubes
• 5

• Valves / Tubes
• PM1HF PM1HF PM1HF PM1HF PM2

• Main principle
• TRF with regeneration; 2 AF stage(s)

• Tuned circuits
• 1 AM circuit(s)

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

• Power type and voltage
• Storage and/or dry batteries / 2 & 108 & 9 Volt

• Loudspeaker
• Magnetic loudspeaker (reed) generic.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Portable 25B - Pye Ltd., Radio Works;

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

• Dimensions (WHD)
• 16.25 x 16.25 x 8.5 inch / 413 x 413 x 216 mm

• Notes

• Two aperiodic HF stages, two transformer-coupled LF amplifiers. Single-dial tuning with reaction. Grid bias battery 9 volts.

  Cabinet in polished walnut. Fitted with Pye Senior or Celestion cone speaker with reinforced membrane.

• Net weight (2.2 lb = 1 kg)
• 30 lb (30 lb 0 oz) / 13.620 kg

• Price in first year of sale
• 23.04 GBP

• Mentioned in
• Wireless World (The), London (WW, 79) (June 5th, 1929)

• Author
• Model page created by Vinicio Massai. 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