• Country
• Germany

• Manufacturer / Brand
• Graetz Radio, Berlin Treptow SO36, Vorkrieg

• Year
• 1936/1937

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 1677

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

• Number of Tubes
• 3

• Valves / Tubes
• AF7 AL4 AZ1

• Main principle
• TRF with regeneration; 1 AF stage(s)

• Tuned circuits
• 1 AM circuit(s)

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

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

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 21 cm = 8.3 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: Graetzor 40W - Graetz Radio, Berlin Treptow

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

• Dimensions (WHD)
• 520 x 310 x 250 mm / 20.5 x 12.2 x 9.8 inch

• Notes
• Ch=43W. Zur Reduzierung der Leistungsaufnahme kann eine Sparschaltung eingeschaltet werden.

• Net weight (2.2 lb = 1 kg)
• 11.8 kg / 25 lb 15.9 oz (25.991 lb)

• Price in first year of sale
• 160.00 RM

• Source of data
• HandB.d.d.Rundfunk-Handels 1936/37 / Radiokatalog Band 2, Ernst Erb

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

• Other Models

• Here you find 75 models, 68 with images and 60 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Graetz Radio, Berlin Treptow SO36, Vorkrieg