• Country
• United States of America (USA)

• Manufacturer / Brand
• Hudson Motor Car Co.

• Year
• 1940 ??

• Category
• Car Radio, perhaps also + sound player/recorder

• Radiomuseum.org ID
• 44769

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

• Number of Tubes
• 7

• Valves / Tubes
• 6SK7 6A8 6SK7 6H6 6SF5 6V6GT 6X5

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 6 Volt

• Loudspeaker
• Permanent or electro-dynamic (moving coil), system not known yet. / Ø 8 inch = 20.3 cm

• Power out
• 2.8 W (unknown quality)

• from Radiomuseum.org
• Model: DB-40 - Hudson Motor Car Co.

• Notes
• Built-in vibrator for B+

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 11 = ca. 1940 and before

• Other Models

• Here you find 15 models, 3 with images and 14 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hudson Motor Car Co.