Editing RFT BG 20-6 Smaragd

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== Data ==
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== Daten ==
''''' RFT Tape Machine BG 20-6 Smaragd '''''
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''''' RFT-Bandmaschine BG 20-6 Smaragd '''''
{{navigation}}
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{{Navigation}}
'''General:'''
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'''Allgemein:'''
* Manufacturer: [[RFT]] Zwönitz
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* Hersteller: [[RFT]] Zwönitz
* Model: Smaragd
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* Modell: Smaragd
* Year of manufacture: from ca 1956
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* Baujahre: ab ca 1956
* Made in: Germany, '''GDR'''
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* Hergestellt in: Deutschland, '''DDR'''
* Color: brown
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* Farbe: braun
* Remote control: yes, electric wired
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* Fernbedienung: ja, elektrisch kabelgebunden
* Power consumption: 250 watts
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* Leistungsaufnahme: 250 Watt
* Dimensions:
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* Abmessungen:
* Weight approx: 20 kg
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* Gewicht ca.: 20 kg
* New price approx.: 1200 DDR mark
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* Neupreis ca.: 1200 DDR-Mark
  
'''Connections:'''
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'''Anschlüsse:'''
* Number of outputs:
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* Anzahl der Ausgänge:
** Radio ect. "diode socket" MONO
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** Radio ect. "Diodenbuchse" MONO
** Loudspeaker: 2 Watt
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** Lautsprecher: 2 Watt
* Number of inputs:
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* Anzahl der Eingänge:
** Microphone
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** Mikrofon
 
** Radio
 
** Radio
'''Technical data:'''
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'''Technische Daten:'''
* Tube device: Mono
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* Röhrengerät: Mono
* max. coil diameter: 18 cm
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* max. Spulendurchmesser: 18 cm
* drive: 1 motor, pole-changing, large flywheel mass, 1 × belt drive
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* Antrieb: 1 Motor, polumschaltbar, große Schwungmasse, 1 × Riemenantrieb
* heads: 1 × erase-/ 1 × sound head, moderate quality
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* Köpfe: 1 × Lösch-/ 1 × Tonkopf, mäßige Qualität
* Tracks: half-track mono
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* Spuren: Halbspur Mono
* Tape speeds: 2 ( 9.5 and 19 cm/s )
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* Bandgeschwindigkeiten: 2 ( 9,5 und 19 cm/s )
* Synchronisation fluctuations: 0.3
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* Gleichlaufschwankungen: 0,3 %
* Pitch fluctuations:
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* Tonhöhenschwankungen:
* Overall frequency response: 40-16,000 Hz at 9.5 cm/s, 40-18,000 Hz at 19 cm/s.
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* Gesamtfrequenzgang: 40–16.000 Hz bei 9,5 cm/s, 40–18.000 Hz bei 19 cm/s
* Signal-to-noise ratio: 45 dB
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* Signalrauschabstand: 45 dB
* Spurious signal-to-noise ratio:
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* Fremdspannungsabstand:
* Distortion: 5%
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* Klirrfaktor: 5 %
* Equalization:
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* Entzerrung:
* Crosstalk attenuation:
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* Übersprechdämpfung:
* Cancellation attenuation: max 40 dB
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* Löschdämpfung: max 40 dB
* Premagnetization and extinction frequency:
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* Vormagnetisierungs- und Löschfrequenz:
  
'''Special features:'''
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'''Besondere Ausstattungen:'''
* remote control: yes
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* fernbedienbar: ja
** electromechanical control
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** elektromechanische Steuerung
** electric brakes, electric clutches (drive)
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** elektrische Bremsen, elektrische Kupplungen (Antrieb)
** display tube EM 11 - magic eye !
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** Anzeigeröhre EM 71 - Magisches Auge !
  
== Remarks ==
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== Bemerkungen ==
* problems with modern tape material, min 35 µm BASF~ er (tape tension), sound respectable at 19 cm/s
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* Probleme mit modernen Bandmaterial, min 35 µm BASF~ er (Bandzug), klanglich respektabel bei 19 cm/s
  
* Other models of the same series:
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* Weitere Modelle der gleichen Serie:
  
== Pictures ==
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== Bilder ==
[[File:Smaragd_BG_20.jpg|RFT BG 20-6 Smaragd]]
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[[Datei:Smaragd_BG_20.jpg|RFT BG 20-6 Smaragd]]
  
== Reports ==
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== Berichte ==
  
 
== Links ==
 
== Links ==
  
[[Category:Tape machines]]
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[[Kategorie:Bandmaschinen]]

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