• Country
• United States of America (USA)

• Manufacturer / Brand
• Sears, Roebuck & Co.; Chicago (IL)

• Year
• 1917

• Category
• Radio module pre 1926 (not a part, not a key)

• Radiomuseum.org ID
• 218618

• • Brand: Silvertone

• Main principle
• Tuner pre 1926 (not a wave trap)

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Various materials

• from Radiomuseum.org
• Model: Improved Acme Receiving Transformer - Sears, Roebuck & Co.; Chicago

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 17 x 5.75 x 6 inch / 432 x 146 x 152 mm

• Notes
• Sears, Roebuck and Co. Improved Acme Receiving Transformer The primary and secondary coils are wound on hard fiber forms with green silk wire. The coil ends are of "Electrose" and the base is of hard wood, finished in mahogany. The primary tuning is accomplished by a sliding contact. The secondary has a ten-point switch which is connected to the sections of the coil. The switch has a large knob which is mounted in the center of the "Electrose" end. The instrument permits close tuning up to 2,500 meters. with a suitable antenna.

• Net weight (2.2 lb = 1 kg)
• 10 lb (10 lb 0 oz) / 4.540 kg

• Price in first year of sale
• 8.00 $

• Literature/Schematics (1)
• 1917 Sears, Roebuck and Co. Wireless Apparatus catalog page 50

• Author
• Model page created by Alan Larsen. See "Data change" for further contributors.

• Other Models

• Here you find 5482 models, 3214 with images and 4188 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sears, Roebuck & Co.; Chicago (IL)