• Country
• Germany

• Manufacturer / Brand
• Braun; Frankfurt

• Year
• 1937/1938

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 1227

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

• Number of Tubes
• 6

• Valves / Tubes
• KK2 KF4 KB2 KC1_p8 KC3 KDD1

• Main principle
• Superheterodyne (common); ZF/IF 488 kHz

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and Short Wave.

• Power type and voltage
• Storage and/or dry batteries / 120 / 2 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Koffer Super BKS237K - BSK237K - Braun; Frankfurt

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 400 x 300 x 190 mm / 15.7 x 11.8 x 7.5 inch

• Notes
• Beide Schreibweisen kommen vor: BSK und BKS! 2 eingebaute Rahmenantennen

• Net weight (2.2 lb = 1 kg)
• 7.8 kg / 17 lb 2.9 oz (17.181 lb)

• Price in first year of sale
• 241.00 RM

• Source of data
• Handbuch WDRG 1937 / Radiokatalog Band 1, Ernst Erb

• Circuit diagram reference
• Lange-Nowisch

• Mentioned in
• Radios von gestern, 1. Auflage

• Literature/Schematics (1)
• Katalog Loeven 1937

• Picture reference
• Das Modell ist im «Radiokatalog» (Erb) abgebildet.

• Other Models

• Here you find 1067 models, 936 with images and 653 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Braun; Frankfurt