• Country
• Germany

• Manufacturer / Brand
• Beyer; Berlin, später Beyerdynamic; Heilbronn

• Year
• 1965 ?

• Category
• Microphone or Pick-up element

• Radiomuseum.org ID
• 140989

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

• Number of Transistors
• 1

• Semiconductors
• AC128

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Dry Batteries / 6 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Mikrofon M 57 V - Beyer; Berlin, später

• Shape
• Miscellaneous shapes - described under notes.

• Dimensions (WHD)
• 64 x 90 x 33 mm / 2.5 x 3.5 x 1.3 inch

• Notes
• Amateurfunk-Mikrofon M 57 V
  Dynamisches Handmikrofon mit eingebautem Transistorverstärker, Übertragungsbereich 300 bis 4000 Hz, Impedanz 0,33 kOhm, Verwendung mobil, portabel mit Schalter.

• Price in first year of sale
• 38.00 $

• Mentioned in
• - - Manufacturers Literature (Funktechnik 05. 1965)

• Literature/Schematics (1)
• Funkschau (10/1965, S. 267)

• Literature/Schematics (2)
• Funk-Technik (FT) (4/1965, S. 133 - 135 / Beschreibung, Daten, Schema)

• Author
• Model page created by Karlheinz Fischer. See "Data change" for further contributors.

• Other Models

• Here you find 151 models, 143 with images and 57 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Beyer; Berlin, später Beyerdynamic; Heilbronn