• Year
  • 1958/1959
perfect model
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 72633

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

 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
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical / Ø 22 cm = 8.7 inch
  • Power out
  • 2 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Sonra Sekretär III 697/62GWU - Stern-Radio Sonneberg, VEB,
  • Shape
  • Tablemodel with Push Buttons.
  • Dimensions (WHD)
  • 570 x 315 x 190 mm / 22.4 x 12.4 x 7.5 inch
  • Notes
  • Der Super Sekretär III 697/62 ist ein Allstromgerät mit 4 Tasten. TA- Betrieb ist deshalb nur über einen Trenntrafo möglich.
    Ab Ende 1957 bis Anfang 1960 Verwendung des Markenzeichen "SONRA" auf den Rückwänden, Skalen und auf den Gehäusefronten.

  • Net weight (2.2 lb = 1 kg)
  • 7.5 kg / 16 lb 8.3 oz (16.52 lb)
  • Price in first year of sale
  • 400.00 DM
  • Source of data
  • Radiokatalog Band 2, Ernst Erb

 Collections | Museums | Literature


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


The model Sonra Sekretär III can be seen in the following museums.


Forum contributions about this model: Stern-Radio: Sonra Sekretär III 697/62GWU

Threads: 1 | Posts: 3

Hello. I have a problem with my Sekretär III radio. The FM doesn't work well when using the radio's own antenna. There is a lot of squealing and interference noise, especially in the higher frequency end of the scale. My theory is that the radio frequencies are coupled back into the antenna from the FM-section due to (originally) poor or weakened shielding somewhere. If I connect only one pin of the dipole-antenna or use just one wire as an external antenna the radio works quite well with only an occasional little squeal at some spots of the dial during tuning. Using it like that, normal listening is not affected very much so it is something that can be lived with. However, I would like to hear if someone else has experienced similar behaviour in their Sekretär radios or other models. Also if there is a way to fix the problem, I would appreciate your suggestions.


Timo Haveri, 31.Jan.10

Weitere Posts (3) zu diesem Thema.