• Country
• Czechoslovakia

• Manufacturer / Brand
• Tesla; Praha, Bratislava etc.

• Year
• 1966–1975 ??

• Category
• Microphone or Pick-up element

• Radiomuseum.org ID
• 148636

• • Brand: Supraphon

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

• Number of Transistors
• 2

• Semiconductors
• KF521 KC509

• Wave bands
• - without

• Power type and voltage
• Powered by external power supply or a main unit.

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: AMC420 - Tesla; Praha, Bratislava etc.

• Dimensions (WHD)
• 28 x 28 x 184 mm / 1.1 x 1.1 x 7.2 inch

• Notes
• Kondensatormikrofon, Übertragungsbereich 50...15000 Hz, Kugelcharakteristik.
  Eingebautes Verstärkerteil mit KF521 (FET) und KC509, Ausgangsimpedanz: 200 Ohm.

• Net weight (2.2 lb = 1 kg)
• 0.2 kg / 0 lb 7 oz (0.441 lb)

• Source of data
• -- Collector info (Sammler)

• Author
• Model page created by Wolfgang Lill. See "Data change" for further contributors.

• Other Models

• Here you find 1838 models, 1159 with images and 668 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tesla; Praha, Bratislava etc.