• Country
• Germany

• Manufacturer / Brand
• Messgerätewerk Zwönitz, VEB; Zwönitz (Ostd.)

• Year
• 1958/1959

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 72473

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

• Number of Tubes
• 4

• Valves / Tubes
• EF86 ECC81 EL84 EM11

• Number of Transistors

• Semiconductors
• Tr.Gl.=Metal-rectif.

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Tape Recorder

• Power type and voltage
• Alternating Current supply (AC) / 110 - 240 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical / Ø 17 cm = 6.7 inch

• Power out
• 1.5 W (unknown quality)

• Material
• Various materials

• from Radiomuseum.org
• Model: Smaragd BG20/3 - Messgerätewerk Zwönitz, VEB;

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

• Dimensions (WHD)
• 435 x 225 x 350 mm / 17.1 x 8.9 x 13.8 inch

• Notes
• Doppelspurgerät, umschaltbar 19,05/9,53 cm/s mit 60-12000/60-9000 Hz. 18-cm-Spulen, Bandzähluhr, Tonblende, Tricktaste (Löschunterbrechung). Koffer aus Sperrholz mit Kunstleder überzogen, Bakelit-Abdeckung. Auch als Einbauchassis im Handel. Fernbedienungsanschluss.

• Net weight (2.2 lb = 1 kg)
• 17 kg / 37 lb 7.1 oz (37.445 lb)

• Price in first year of sale
• 1,050.00 DM

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Mentioned in
• -- Original-techn. papers. (Radio und Fernsehen 5/58)

• Literature/Schematics (1)
• Funkverlag Hein, Service-CD

• Author
• Model page created by Peter Edgar Kirchhof. See "Data change" for further contributors.

• Other Models

• Here you find 70 models, 62 with images and 47 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Messgerätewerk Zwönitz, VEB; Zwönitz (Ostd.)