Sekretär III 697/75GWU 3D

Stern-Radio Sonneberg, VEB, RFT; SONRA; -vorm.: EAK (Ostd.) - ex. AEG

Data
Forum
Pictures
Collections

  • Year
  • 1960 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 126147

 Technical Specifications

  • Number of Tubes
  • 6
  • Number of Transistors
  • Main principle
  • Superheterodyne (common); ZF/IF 473/10700 kHz
  • Tuned circuits
  • 6 AM circuit(s)     9 FM circuit(s)
  • Wave bands
  • Broadcast, Long Wave and FM or UHF.
  • Power type and voltage
  • AC/DC-set / 220 Volt
  • Loudspeaker
  • 3 Loudspeakers / Ø 22 cm = 8.7 inch
  • Power out
  • 2 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Sekretär III 697/75GWU 3D - Stern-Radio Sonneberg, VEB,
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 560 x 315 x 185 mm / 22 x 12.4 x 7.3 inch
  • Notes
  • TA nur mit Trenntrafo möglich.
  • Net weight (2.2 lb = 1 kg)
  • 7 kg / 15 lb 6.7 oz (15.419 lb)
  • Source of data
  • - - Data from my own collection
  • Author
  • Model page created by Klemens Rhode. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Sekretär III is part of the collections of the following members.

 Forum

Forum contributions about this model: Stern-Radio: Sekretär III 697/75GWU 3D

Threads: 1 | Posts: 3

I'm restoring a Sekretär III 697/75GWU 3D radio. There wasn't a schematic for this model in RMorg but I used a schematic for model Sekretär III 697/62GWU which I believe to be close enough. There are no component values in the schematic and I need to know the value of one resistor. It is burned open and the markings are no longer visible. I think it is R11 in the schematic (in the lower left corner, antenna circuit). I have no idea how it got burned. There is no visible damage in the other components.

Also I removed the 50 + 100 uF electrolytic capacitor can but I forgot to look which one is the first and which one is the second filter. I'm guessing that the 100 uF is the first. Am I right?

The final question is about the half wave selenium rectifier. I measured its resistance with a digital ohm meter and I got 1.3 megaohms in the other direction and 1.6 megaohms in the other. I assume that it is bad?

All answers will be greatly appreciated.

Timo

Timo Haveri, 16.Jun.08

Weitere Posts (3) zu diesem Thema.