• Country
• Germany

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

• Year
• 1933

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 1662

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

• Number of Tubes
• 2

• Valves / Tubes
• REN1814 RENS1823d

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

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and 2 x Short Wave.

• Power type and voltage
• Direct Current supply (DC) / 110; 150; 220 Volt

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

• Power out
• 1.7 W (max.)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Graetzor 33G - Graetz Radio, Berlin Treptow

• Shape
• Tablemodel, high profile (upright - NOT Cathedral nor decorative).

• Dimensions (WHD)
• 340 x 403 x 253 mm / 13.4 x 15.9 x 10 inch

• Net weight (2.2 lb = 1 kg)
• 13 kg / 28 lb 10.1 oz (28.634 lb)

• Source of data
• Radiokatalog Band 2, Ernst Erb

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

• Literature/Schematics (1)
• -- Original-techn. papers.

• 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