• Country
• United States of America (USA)

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

• Year
• 1946 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 217647

• Number of Tubes
• 4

• Valves / Tubes
• 6AQ6 7L7 7A5 7Y4

• Main principle
• Audio-Amplification

• Wave bands
• - without

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

• Loudspeaker
• Permanent or electro-dynamic (moving coil), system not known yet.

• Material
• Metal case

• from Radiomuseum.org
• Model: Signal Tracer 7031 - Philco, Philadelphia Stg. Batt

• Shape
• Tablemodel, with any shape - general.

• Author
• Model page created by Hans-Joachim Korn † 16.11.15. See "Data change" for further contributors.

• Other Models

• Here you find 4093 models, 2225 with images and 3741 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA