• Country
• Germany

• Manufacturer / Brand
• Körting-Radio; Leipzig, später Grassau

• Year
• 1963 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 117955

• • alternative name: Dietz & Ritter GmbH, Dr.

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

• Number of Tubes
• 7

• Valves / Tubes
• ECC85 ECH81 EF89 EABC80 EAM86 EL84 ECL86

• Main principle
• Superheterodyne (common); ZF/IF 472 kHz; 2 AF stage(s)

• Wave bands
• Broadcast, Long Wave, Short Wave plus FM or UHF.

• Details
• Changer (Record changer)

• Power type and voltage
• Alternating Current supply (AC) / 50 watts, 60 cycles 117 volts = 110 - 120 Volt

• Loudspeaker
• 4 Loudspeakers / Ø 6 inch = 15.2 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: Körting-Delmonico 931 and 931A Ch= 24611 for 23661 - Körting-Radio; Leipzig, später

• Shape
• Console, Lowboy (legs < 50 %).

• Dimensions (WHD)
• 25 x 33 x 17 inch / 635 x 838 x 432 mm

• Notes

• Delmonico International, a division of Thompson-Starrett Co., Inc., in 120-20 Roosevelt Avenue, Corona 66, New York imported at least chassis, perhaps the full radio from different companies. One was Körting-Radio in Germany. SAMS Photofact set 668, folder 4 from December 1963 shows for the same chassis/schematic the following Körting-Delmonico models: 931, 941, 951, 961, 981, 1091 and 1221. The models or the owner manual may also show a suffix - like 931A etc. The chassis are the German domestic Excello Stereo Chassis 24611 for music console 23661 - but at least the transformer (110-120 volts) and scale were changed for export. They receive "Long Wave" 150 to 360 kHz, Broadcast (Medium Wave) 515 to 1620 kHz, Short Waves 8.5 to 19.3 MHz and FM 88 - 108 MHz. They all have a record changer for 4 speeds and a stereo amplifier.
  
  The model 931 uses the tubes linked above. According to the owners manual, the 931A uses ECC85, ECH81, EBF89, ECL86, EM84, ECL86 and EZ80 plus two diodes OA172. The FM multiplex adapter uses two 2SB54 transistors and two RL232 diodes. There is a ferrite antenna, short wave bandspread tuning, compensated volume control, separate bass and treble controls etc.

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 668 Folder 4, December 1963.)

• Author
• Model page created by Martin Kajdas. See "Data change" for further contributors.

• Other Models

• Here you find 800 models, 653 with images and 451 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Körting-Radio; Leipzig, später Grassau