• Country
• United States of America (USA)

• Manufacturer / Brand
• Motorola Inc. (ex Galvin Mfg.Co. Chicago); Schaumburg (IL)

• Year
• 1947 ??

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

• Radiomuseum.org ID
• 48804

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

• Number of Tubes
• 8

• Valves / Tubes
• 6SK7GT 6SA7GT 6SK7GT 6SQ7GT 6J5GT 6V6GT 6V6GT 0Z4

• Main principle
• Superhet with RF-stage; ZF/IF 262 kHz

• Tuned circuits
• 7 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
• - This model requires external speaker(s).

• Material
• Metal case

• from Radiomuseum.org
• Model: 47-D1 Ch= A03 - Motorola Inc. ex Galvin Mfg.Co

• Shape
• Chassis only or for «building in»

• Notes

• 5 preselect pushbuttons. Uses external electrodynamic speaker. Vibrator for B+.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 15 = 1947 and before

• Other Models

• Here you find 4508 models, 2955 with images and 4002 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Motorola Inc. (ex Galvin Mfg.Co. Chicago); Schaumburg (IL)