• Country
• Germany

• Manufacturer / Brand
• Grawor, Rundf.techn.Erz. Grass & Worff (REG); Berlin

• Year
• 1933 ?

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 74069

• • alternative name: Gravor

• Power type and voltage
• No Power needed

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 20 cm = 7.9 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: Perkeo-Dynamo K - Grawor, Rundf.techn.Erz. Grass

• Shape
• Tablemodel, high profile (upright - NOT Cathedral nor decorative).

• Dimensions (WHD)
• 380 x 410 x 220 mm / 15 x 16.1 x 8.7 inch

• Notes
• 4 Anschlüsse: 0-1 RE304, 0-2 RE134, RE374, 0-3 RES 164, 1374, 2-3 RE604

• Net weight (2.2 lb = 1 kg)
• 4 kg / 8 lb 13 oz (8.811 lb)

• Price in first year of sale
• 60.00 RM

• External source of data
• Katalog Rundfunkgroßhandel Speiermann, Weigel & CO. Chemnitz, Ausgabe 1933/34

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Author
• Model page created by Robert Weiner. See "Data change" for further contributors.

• Other Models

• Here you find 141 models, 136 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Grawor, Rundf.techn.Erz. Grass & Worff (REG); Berlin