• Country
• United States of America (USA)

• Manufacturer / Brand
• Magnavox Co., Commercial Wireless and Development Co.; San Francisco, later Fort Waye, IN

• Year
• 1924

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 120189

• Wave bands
• - without

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

• Loudspeaker
• Horn / Ø 14 inch = 35.6 cm

• Material
• Metal case

• from Radiomuseum.org
• Model: R3D - Magnavox Co., Commercial

• Dimensions (WHD)
• 355 x 725 x 310 mm / 14 x 28.5 x 12.2 inch

• Notes
• Field coil 8-50 Ohms (rheostat) for 6 Volt storage battery. Field current 0.6 - 0.1 Amp. Ind.coil Input 700 Ohms. Crystalline finish. R3 (without suffix) was the special driver for different horn speaker models from 1921 - 1924. But there was also a radio set named R-3 !

• Price in first year of sale
• 35.00 USD

• Mentioned in
• Radio Horn Speaker Encyclopedia, by Floyd A.Paul

• Literature/Schematics (2)
• Radio Broadcast, Apr. 1924, p. 529

• Author
• Model page created by Reiner Scholz. See "Data change" for further contributors.

• Other Models

• Here you find 1110 models, 528 with images and 813 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Magnavox Co., Commercial Wireless and Development Co.; San Francisco, later Fort Waye, IN