• Country
• United States of America (USA)

• Manufacturer / Brand
• Master-Craft Products Co.; Chicago, IL

• Year
• 1927/1928

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 285811

• Wave bands
• - without

• Power type and voltage
• Powered by external power supply or a main unit. / 22.5 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Tube Renewer - Master-Craft Products Co.;

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 1.5 x 0.3125 x 3.625 inch / 38 x 8 x 92 mm

• Notes

• Tube Rejuvenator for 201A- and 199-type tubes, made of red bakelite.

• Price in first year of sale
• 1.00 $

• Mentioned in
• -- Original-techn. papers.

• Literature/Schematics (1)
• Radio Engineering (Nov. 1927, p. 1066)

• Literature/Schematics (2)
• Radio News (Jan. 1928, p. 851)

• Author
• Model page created by Gottfried Silberhorn. See "Data change" for further contributors.

• Other Models

• Here you find 1 models, 1 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Master-Craft Products Co.; Chicago, IL