41S

• Country
• United States of America (USA)

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

• Year
• 1939

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 48786

• Picture
• Schematics

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

• Number of Tubes
• 4

• Valves / Tubes
• 1A7G 1N5G 1H5G 1T5GT

• Main principle
• Superheterodyne (common)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries

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

• Material
• Various materials

• from Radiomuseum.org
• Model: 41S - Motorola Inc. ex Galvin Mfg.Co

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 145 x 220 x 110 mm / 5.7 x 8.7 x 4.3 inch

• Notes

• Motorola 41-S "Sporter" is an early example of a personal portable reciever. The chassis uses octal bantam tubes and is housed in a wooden cabinet covered with artificial brown leather. The loop antenna is housed within the shoulder strap and is reported to be non-directional.

  The reciever requires three proprietary batteries; one General No.2F1/Burgess No.2F for 1.5V A supply, one General No.20AAA9/Burgess No.W20PI for 30V B supply and one General No. 34AAA9/Burgess No. W34 for 51V B supply. Both B batteries are put in series for 81V of B supply.

• External source of data
• Ernst Erb

• Source of data
• Collector's Guide to Antique Radios 4. Edition

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

• Mentioned in
• The Radio Collector's Directory and Price Guide 1921 - 1965 (E. Erb, Radios von gestern (Seite 67))

• 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)