• Country
• Germany

• Manufacturer / Brand
• Braun; Frankfurt

• Year
• 1936–1938

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 1223

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

• Number of Tubes
• 4

• Valves / Tubes
• AK2 AF7 AL4 AZ1

• Main principle
• Superhet, single span (BC/MW and LW in 1 band); ZF/IF 1540 kHz; Reaction

• Tuned circuits
• 3 AM circuit(s)

• Wave bands
• Broadcast (MW) and Long Wave.

• Details
• Record Player (not changer)

• Power type and voltage
• Alternating Current supply (AC) / 110; 125; 150; 220; 240 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Power out
• 4.5 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Phono-Super 137W - Braun; Frankfurt

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 470 x 355 x 430 mm / 18.5 x 14 x 16.9 inch

• Notes
• Braun Einbereichs-Phono-Super 137W.
  Lautsprecher vom Ausgangstrafo primärseitig abschaltbar; Ausgang für 2. LS: 7000 Ohm; Bandbreiten. und Empindlichkeitsregler; abschaltbare Interferenzsperre.

• Price in first year of sale
• 244.00 RM

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

• Circuit diagram reference
• Lange+Schenk+FS-Röhrenbestückung

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

• Other Models

• Here you find 1061 models, 931 with images and 652 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Braun; Frankfurt