• Country
• United States of America (USA)

• Manufacturer / Brand
• Amrad Corporation; Medford Hillside (MA)

• Year
• 1923

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 32604

• • alternative name: American Radio & Research

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

• Number of Tubes
• 4

• Valves / Tubes

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown)

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Amrad 35 3500-1 3475 & 2634 - Amrad Corporation; Medford

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Dimensions (WHD)
• 390 x 260 x 200 mm / 15.4 x 10.2 x 7.9 inch

• Notes
• 2 Box: 3475 & 2634.
  This model 3500-1 employs 2 selector switches (right and left of the lower centre dial). The 3500-2 has only one selector switch (double arm) at the right from the center lower dial, near the bottom of the panel.

• Net weight (2.2 lb = 1 kg)
• 5.5 kg / 12 lb 1.8 oz (12.115 lb)

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Circuit diagram reference
• Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

• Mentioned in
• Collector's Guide to Antique Radios 4. Edition

• Other Models

• Here you find 107 models, 81 with images and 44 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Amrad Corporation; Medford Hillside (MA)