• Country
• United States of America (USA)

• Manufacturer / Brand
• Apparatus Design Co.; Little Rock, Arkansas

• Year
• 1933/1933 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 294211

• Number of Tubes
• 1

• Valves / Tubes
• 01A

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 103-130 Volts - 60 Cycles Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Confidence Special Tube Tester - Apparatus Design Co.; Little

• Shape
• Tablemodel without push buttons, Mantel/Midget/Compact up to 14

• Dimensions (WHD)
• 8.75 x 13.75 x 4.75 inch / 222 x 349 x 121 mm

• Author
• Model page created by Baptiste Hobbe. See "Data change" for further contributors.

• Other Models

• Here you find 5 models, 5 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Apparatus Design Co.; Little Rock, Arkansas