• Country
• Hungary

• Manufacturer / Brand
• Lengyel István gépészmérnök (Sure); Budapest

• Year
• 1938

• Category
• Microphone or Pick-up element

• Radiomuseum.org ID
• 288442

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Mikrofon Crystal Piezophone - Lengyel István gépészmérnök

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Notes

• 30-10000 Hz.

• Price in first year of sale
• 65.00 Pengő

• Literature/Schematics (2)
• Rádiótechnika Budapest, 1938.

• Author
• Model page created by Sándor Selyem-Tóth. See "Data change" for further contributors.

• Other Models

• Here you find 14 models, 12 with images and 5 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Lengyel István gépészmérnök (Sure); Budapest