• Country
• Germany

• Manufacturer / Brand
• Walther, Ing. Erhard; ERWA; Plauen (Ostd.)

• Year
• 1954 ??

• Category
• Microphone or Pick-up element

• Radiomuseum.org ID
• 237044

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

• Number of Tubes
• 1

• Valves / Tubes
• RV12P2000

• Number of Transistors

• Semiconductors
• Selen

• Main principle
• Audio-Amplification; 1 AF stage(s)

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 220 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Mikrofon S - Walther, Ing. Erhard; ERWA;

• Shape
• Miscellaneous shapes - described under notes.

• Dimensions (WHD)
• 80 x 280 x 80 mm / 3.1 x 11 x 3.1 inch

• Notes

• Mikrofon mit integriertem Röhrenverstärker und eingebautem Netzteil; Bauausführung der damaligen Zeit entsprechend als "Flasche", RFT-Bauteile. 

• Author
• Model page created by Günther Stabe † 19.8.20. See "Data change" for further contributors.

• Other Models

• Here you find 9 models, 6 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Walther, Ing. Erhard; ERWA; Plauen (Ostd.)