• Country
• United States of America (USA)

• Manufacturer / Brand
• Freshman Co. Inc., Chas.., (Polydyne); New York

• Year
• 1922

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 210760

• • Brand: C.A.Earl

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Various materials

• from Radiomuseum.org
• Model: Grid Leak Assembly Variable - Freshman Co. Inc., Chas..,

• Dimensions (WHD)
• 57 x 29 x 12 mm / 2.2 x 1.1 x 0.5 inch

• Notes
• An electrical apparatus comprising a dielectric plate, a conducting coating on one side thereof, terminals for connecting an electric current to the opposite ends of side plate, an elongated strip conductor pivoted centreally on side plate with its entire contiguous surface in constant electrical contact with the contend surface thereof, means for rotating said conductor to present its ends at different distances from the terminals; Albert Franklin US patent nr. 1,599,225 dated Oct. 5, 1922, Serial nr. 592,574.

• Net weight (2.2 lb = 1 kg)
• 0.1 kg / 0 lb 3.5 oz (0.22 lb)

• Price in first year of sale
• 1.00 $

• Mentioned in
• Radio Manufacturers of the 1920's, Vol. 2 (p.24)

• Literature/Schematics (2)
• Radio Digest Illustrated, 1922 Nov. 18, p. 4

• Author
• Model page created by Emilio Focosi. See "Data change" for further contributors.

• Other Models

• Here you find 131 models, 79 with images and 44 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Freshman Co. Inc., Chas.., (Polydyne); New York