• Country
• United States of America (USA)

• Manufacturer / Brand
• Philco, Philadelphia Stg. Batt. Co.; USA

• Year
• 1937 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 361048

• Number of Tubes
• 0

• Valves / Tubes
• Neon_Indicator

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Tube Tester 421 - Philco, Philadelphia Stg. Batt

• Shape
• Tablemodel, with any shape - general.

• Notes

• 8 sockets.

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

• Other Models

• Here you find 4089 models, 2223 with images and 3736 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA