• Country
• Germany

• Manufacturer / Brand
• Hegra, Hekra, (Marke), Hermann Grau, Berlin-Friedrichshagen - Vorkrieg

• Year
• 1929–1932

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 101597

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110; 220 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 24 cm = 9.4 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: Dynamik - Gehäuselautsprecher B2/3 - Hegra, Hekra, Marke, Hermann

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 420 x 400 x 270 mm / 16.5 x 15.7 x 10.6 inch

• Notes

• Dunkel gebeiztes Eichengehäuse, Vorderfront Nussbaum poliert.
  Verwendet das Chassis A3.

• Net weight (2.2 lb = 1 kg)
• 10.6 kg / 23 lb 5.6 oz (23.348 lb)

• Price in first year of sale
• 150.00 RM

• Mentioned in
• A. Stark, Preisliste 1929

• Literature/Schematics (1)
• Katalog Radio-Zentrale Prohaska 1928 (1931/32, Nr.499a)

• Author
• Model page created by Friedrich Meierhöfer † 16.4.22. See "Data change" for further contributors.

• Other Models

• Here you find 117 models, 99 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hegra, Hekra, (Marke), Hermann Grau, Berlin-Friedrichshagen - Vorkrieg