• Country
• Germany

• Manufacturer / Brand
• Reisz, Eugen, Apparatebau; Berlin

• Year
• 1923 ?

• Category
• Microphone or Pick-up element

• Radiomuseum.org ID
• 174012

• Wave bands
• - without

• Power type and voltage
• Dry Batteries

• Loudspeaker
• - For headphones or amp.

• Material
• Various materials

• from Radiomuseum.org
• Model: KS-Mikrophon M109 - Reisz, Eugen, Apparatebau;

• Dimensions (WHD)
• 150 x 100 x 50 mm / 5.9 x 3.9 x 2 inch

• Notes
• Kohlengriess-Mikrophon mit Plattenmembran in Marmorblock. Siehe das gleiche Mikrofon auch unter AEG - z.B. im Museum für Kommunikation in Frankfurt (April 2010).

• Net weight (2.2 lb = 1 kg)
• 0.8 kg / 1 lb 12.2 oz (1.762 lb)

• Price in first year of sale
• 175.00 RM

• Other Models

• Here you find 9 models, 9 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Reisz, Eugen, Apparatebau; Berlin