• Country
• Germany

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

• Year
• 1938–1940

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 2467

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

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

• Number of Tubes
• 6

• Valves / Tubes
• AC2 AC2 AD1 RS241 RS241 RGQZ1,4/0,4d

• Main principle
• Audio-Amplification; 4 AF stage(s)

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110; 125; 150; 220 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 25 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Breitband-Kraftverstärker 25W HKBW II 10988c - Körting-Radio; Leipzig, später

• Shape
• Miscellaneous shapes - described under notes.

• Dimensions (WHD)
• 510 x 295 x 190 mm / 20.1 x 11.6 x 7.5 inch

• Notes

• Breitband-Kraftverstärker für Wandmontage. Eingangs-Steuerspannung 40 mV; Ausgangs-Impedanzen: 6/250/500 Ohm.

  In Literatur auch als HKBW25 bezeichnet.

• Net weight (2.2 lb = 1 kg)
• 18 kg / 39 lb 10.4 oz (39.648 lb)

• Price in first year of sale
• 530.00 RM

• Source of data
• Handbuch WDRG 1938 / Radiokatalog Band 1, Ernst Erb

• Circuit diagram reference
• Lange-Nowisch

• Mentioned in
• -- Original prospect or advert

• Other Models

• Here you find 815 models, 667 with images and 471 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Körting-Radio; Leipzig, später Grassau