• Country
• Germany

• Manufacturer / Brand
• Espe-Werke Strelow & Prunzel GmbH (SP); Potsdam

• Year
• 1928/1929

• Category
• Detector-Radio (Crystal or diode, without tubes/transistors)

• Radiomuseum.org ID
• 14478

• Main principle
• Crystal or Solid State Detector; Crystal-detection 1 circuit (no tubes)

• Tuned circuits
• 1 AM circuit(s)

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

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Detektor-Empfänger [Flachpult] - Espe-Werke Strelow & Prunzel

• Notes
• Flachpult für Steckspule, Luftdrehko 500 cm

• Price in first year of sale
• 9.00 RM

• External source of data
• E. Erb 3-907007-36-0

• Source of data
• Radio-Diehr, Berlin, 1928/1929 / Radiokatalog Band 2, Ernst Erb

• Other Models

• Here you find 6 models, 5 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Espe-Werke Strelow & Prunzel GmbH (SP); Potsdam