• Country
• Germany

• Manufacturer / Brand
• Nora, Aron, Heliowatt; Berlin

• Year
• 1941/1942

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 7830

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

• Number of Tubes
• 5

• Valves / Tubes
• ECH3 ECH4 EBL1 AZ1 EM1

• Main principle
• Superheterodyne (common); ZF/IF 128 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 110-220 Volt

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

• Power out
• 4.5 W (unknown quality)

• from Radiomuseum.org
• Model: 710W - Nora, Aron, Heliowatt; Berlin

• Notes

• Ch= Philips 789A. Sogenanntes Verlagerungsgerät.

• Source of data
• Radiokatalog Band 1, Ernst Erb

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

• Mentioned in
• Funkgeschichte der GFGF (Nr. 234, 235, 236 (2017))

• Literature/Schematics (1)
• Lange / Nowisch, "Empfängerschaltungen der Radioindustrie"

• Other Models

• Here you find 633 models, 556 with images and 342 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Nora, Aron, Heliowatt; Berlin