Smaragd BG20/4
Messgerätewerk Zwönitz, VEB; Zwönitz (Ostd.)
- Country
- Germany
- Manufacturer / Brand
- Messgerätewerk Zwönitz, VEB; Zwönitz (Ostd.)
- Year
- 1959/1960
- Category
- Sound/Video Recorder and/or Player
- Radiomuseum.org ID
- 78039
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 3
- 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
- Power out
- 1.5 W (unknown quality)
- Material
- Various materials
- from Radiomuseum.org
- Model: Smaragd BG20/4 - 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 60-15000/60-10000 Hz. Weiterentwicklung des BG20/3. 18-cm-Spulen, Bandzähluhr, Tonblende, Tricktaste (Löschunterbrechung). Koffer aus Sperrholz mit Kunstleder überzogen, Bakelit-Abdeckung. Auch als Einbauchassis im Handel (390 × 160 × 278 mm).
- Net weight (2.2 lb = 1 kg)
- 18 kg / 39 lb 10.4 oz (39.648 lb)
- Price in first year of sale
- 1,110.00 DM
- Source of data
- Radiokatalog Band 2, Ernst Erb
- Mentioned in
- -- Original-techn. papers. (Radio und Fernsehen 5/58 und 11/59)
- Literature/Schematics (1)
- -- Collector info (Sammler) (Funkverlag Hein, Service-CD)
- Author
- Model page created by Wolfgang Eckardt. 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.)
Collections
The model Smaragd is part of the collections of the following members.
Museums
The model Smaragd can be seen in the following museums.
Forum contributions about this model: Messgerätewerk: Smaragd BG20/4
Threads: 1 | Posts: 2
Question about RFT Smaragd BG 20-4 recorder | 1 |
![]() Hello! I have a problem with the record/play head shield plate in the front of the head. It does not open when recorder is not in play-mode. It seems as a missing spring of some kind...? Can anybody give me a tip how it should works? See picture down here! Thanks /Lennart Schander |
Lennart Schander, 09.Sep.05