• Country
• Great Britain (UK)

• Manufacturer / Brand
• Hetrodex, (where?)

• Year
• 1932 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 145967

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

• Number of Tubes
• 4

• Valves / Tubes
• SG215 PM2DX PM1HL PM2

• Main principle
• TRF with regeneration; 2 AF stage(s); Screengrid 1926-1935

• Tuned circuits
• 1 AM circuit(s)

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

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• Magnetic loudspeaker (reed) generic. / Ø 10 inch = 25.4 cm

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Screened IX - Hetrodex, where?

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

• Notes
• Tuned frame aerial followed ba an RF stage (screen grid), then aperiodic coupling to det.stage.
  Bakelite and aluminium chassis. Sold by (and probably made for) Harrod's.

• Source of data
• - - Data from my own collection

• Author
• Model page created by Gerry Howe. See "Data change" for further contributors.

• Other Models

• Here you find 1 models, 1 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hetrodex, (where?)