Editing RFT BG 20-6 Smaragd

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__NOTOC__
 
== Data ==
 
''''' RFT Tape Machine BG 20-6 Smaragd '''''
 
{{navigation}}
 
'''General:'''
 
* Manufacturer: [[RFT]] Zwönitz
 
* Model: Smaragd
 
* Year of manufacture: from ca 1956
 
* Made in: Germany, '''GDR'''
 
* Color: brown
 
* Remote control: yes, electric wired
 
* Power consumption: 250 watts
 
* Dimensions:
 
* Weight approx: 20 kg
 
* New price approx.: 1200 DDR mark
 
  
'''Connections:'''
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Navigation
* Number of outputs:
 
** Radio ect. "diode socket" MONO
 
** Loudspeaker: 2 Watt
 
* Number of inputs:
 
** Microphone
 
** Radio
 
'''Technical data:'''
 
* Tube device: Mono
 
* max. coil diameter: 18 cm
 
* drive: 1 motor, pole-changing, large flywheel mass, 1 × belt drive
 
* heads: 1 × erase-/ 1 × sound head, moderate quality
 
* Tracks: half-track mono
 
* Tape speeds: 2 ( 9.5 and 19 cm/s )
 
* Synchronisation fluctuations: 0.3
 
* Pitch fluctuations:
 
* Overall frequency response: 40-16,000 Hz at 9.5 cm/s, 40-18,000 Hz at 19 cm/s.
 
* Signal-to-noise ratio: 45 dB
 
* Spurious signal-to-noise ratio:
 
* Distortion: 5%
 
* Equalization:
 
* Crosstalk attenuation:
 
* Cancellation attenuation: max 40 dB
 
* Premagnetization and extinction frequency:
 
  
'''Special features:'''
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    Bandmaschinen
* remote control: yes
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** electromechanical control
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Allgemein
** electric brakes, electric clutches (drive)
 
** display tube EM 11 - magic eye !
 
  
== Remarks ==
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    Hersteller: RFT Zwönitz
* problems with modern tape material, min 35 µm BASF~ er (tape tension), sound respectable at 19 cm/s
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    Modell: Smaragt
 +
    Baujahre: ab 1956
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    Hergestellt in: Deutschland, DDR
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    Farbe: Braun
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    Fernbedienung: ja,Elektrisch Kabelgebunden
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    Leistungsaufnahme: 250VA
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    Abmessungen:
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    Gewicht: ca. 20kg
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    Neupreis ca.: 1200 DDR Mark
  
* Other models of the same series:
 
  
== Pictures ==
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Anschlüsse
[[File:Smaragd_BG_20.jpg|RFT BG 20-6 Smaragd]]
 
  
== Reports ==
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    Anzahl der Ausgänge:
 +
        Radio ect."Diodenbuchse" MONO
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        Lautsprecher 4W
 +
    Anzahl der Eingänge:
 +
        Mikrofon
 +
        Radio
 +
       
  
== Links ==
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Technische Daten
 +
    Röhrengerät Mono
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    max. Spulendurchmesser: 18cm
 +
    Antrieb: 1 Motor Polumschaltbar*, grosse Schwungmasse, 1 x Riemenantrieb
 +
    Köpfe: Lösch-Tonkopf ,mässige Qualität ! 
 +
    Spuren: Halbspur Mono
 +
    Bandgeschwindigkeiten: 2 (9,5 und 19cm/s)*
 +
   
 +
    Gleichlaufschwankungen: 0,3
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    Tonhöhenschwankungen:
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    Gesamtfrequenzgang: 40 - 16000Hz bei 9,5cm/s, 40 - 18000Hz bei 19cm/s
 +
    Signalrauschabstand: 45 dB
 +
    Fremdspannungsabstand:
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    Klirrfaktor: 5%
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    Entzerrung:
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    Übersprechdämpfung:
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    Löschdämpfung:max 40 dB
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    Vormagnetisierungs- und Löschfrequenz:
  
[[Category:Tape machines]]
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Besondere Ausstattungen
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    fernbedienbar : Elektromechanische Steuerung
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                    Elektrische Bremsen 
 +
 
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[Bearbeiten] Bemerkungen : Probleme mit modernen Bandmaterial (Bandzug),klanglich respektabel !
 +
       
 +
 
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Weitere Modelle der gleichen Serie:

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