Syntektor 54W

Körting-Radio; Leipzig, später Grassau

Data
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  • Year
  • 1953/1954
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 19364
    • alternative name: Dietz & Ritter GmbH, Dr.

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

 Technical Specifications

  • Number of Tubes
  • 8
  • Number of Transistors
  • Main principle
  • Superhet with RF-stage; ZF/IF 472/10700 kHz
  • Tuned circuits
  • 7 AM circuit(s)     15 FM circuit(s)
  • Wave bands
  • Broadcast, Long Wave, Short Wave plus FM or UHF.
  • Power type and voltage
  • Alternating Current supply (AC) / 110; 125; 220; 240 Volt
  • Loudspeaker
  • 2 Loudspeakers / Ø 21 cm = 8.3 inch
  • Power out
  • 5.7 W (max.)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Syntektor 54W - Körting-Radio; Leipzig, später
  • Shape
  • Tablemodel with Push Buttons.
  • Dimensions (WHD)
  • 646 x 390 x 275 mm / 25.4 x 15.4 x 10.8 inch
  • Notes

  • Dr. Ing. Waldemar Moortgat-Pick ist gemäss FG/141/30 der Vater des Körting Syntektor 54 und Royal Syntektor 55 - und natürlich für alle Geräte mit dieser interessanten Schaltung.

    Syntektor = Synchro-Detektor (Synchron-Demodulator für UKW-FM).

  • Net weight (2.2 lb = 1 kg)
  • 14.6 kg / 32 lb 2.5 oz (32.159 lb)
  • Price in first year of sale
  • 468.00 DM
  • External source of data
  • Erb
  • Mentioned in
  • -- Original-techn. papers.
  • Literature/Schematics (2)
  • Radio-Mentor (5/1954, S.249ff., Empfänger-Test)

 Collections | Museums | Literature

Collections

The model Syntektor is part of the collections of the following members.

Literature

The model Syntektor is documented in the following literature.

 Forum

Forum contributions about this model: Körting-Radio;: Syntektor 54W

Threads: 2 | Posts: 4

Zu den Synchro-Detektor-Schaltungen der Körting Syntektor Geräte erschienen Berichte in verschiedenen Fachzeitschriften. Hier nun eine Beschreibung des Syntektor 54 nach Unterlagen des Körting Labors.

Der Bericht (2 Seiten + Schaltbild) erschien in Heft 9/1953 der Zeitschrift 'Radio Magazin' und ist dort abgelegt.

Franz Harder, 21.Feb.18

Weitere Posts (1) zu diesem Thema.

Greetings Fellow Collectors!

 I am fortunate to be in the process of restoring an example of this somewhat historic and technically interesting model from the manufacturer Körting.

 After extensive routine work (cleaning, the restuffing of all paper capacitors, etc. etc.) and a complete realignment, I found the UKW to be exemplary in performance, but the LW/MW/KW bands had rather dismal performance at best.

 Knowing this model possesses a broadband (untuned) R.F. amplifier stage, I thought that its poorer than average AM performance was quite unusual, especially with the MW band.

 I proceeded to trace and investigate a cause.....Was it possibly a mistake in work by myself, or a hidden defect I had overlooked in the resto process?

 After a period of time poring over the schematic, taking passive and dynamic measurements and jotting notes,---I discovered the root cause.

A mistake in switchboard bus wiring had been made during assembly at the factory!

 A ground lead was connected to the wrong bus.  (39)

 No direct ground return was provided for bus (40)

 Apparently, these wiring errors were somewhat compensated for at the factory by (mis-) alignment and in doing so, must have allowed this particular unit to pass quality control/ testing.

 Simply moving the misplaced bus one row to the left side of the tasten Pertinax switchboard and adding the missing 1K resistor,(39 bis 39a,) together with a total realignment of the AM R.F. circuits made for a pleasing surprise of a radio that performs very well!

 Please note!

 Herr Staginnus has informed me that there are two variants of this model, as noted in the model page data list, schematics "c" and "d." (sch1, sch2) So, my example may not use the 1K cathode resistor switched into the EBF80 (1) cathode circuit for LW band only. (39-39a) I shall remove this resistor I had placed and revert back to direct bus connection per schematic "d," as I found it.

My radio did have the (40)  bus/ ground wiring error as mentioned. Sorry for any confusion, and thanks to Herr Staginnus for this observation. We learn!

 This radio is certainly worthy now of the installation of a new EM85 indicator tube!

 Of little technical use, but this is the first radio that I have literally restuffed the housings of the original Germanium diodes (discriminator) with matched, modern units (NTE110MP)

 I type this note as a hint to other owners of the model 54W in the event my radio was not the only example allowed to escape the factory of Körting with this error in bus wiring.

 Regards,

 D. Daly

Dennis Daly, 28.Sep.08

Weitere Posts (3) zu diesem Thema.