• Country
• United States of America (USA)

• Manufacturer / Brand
• Feiler; Chicago

• Year
• 1946/1947

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 217641

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 4

• Valves / Tubes
• 6C4 6BA6 6K6 6X5

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 60 Hz; 117 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm

• Material
• Metal case

• from Radiomuseum.org
• Model: Stethoscope TS-3 - Feiler; Chicago

• Shape
• Tablemodel, with any shape - general.

• Notes

• Model TS-3 is an a-c signal tracing Stethoscope. The 1" diameter aluminum probe contains a miniature tube in a detector-amplifier isolating circuit, while the larger case houses 3 more tubes, including a power output which drives the 5" PM speaker for audible signal tracing. An a-c voltmeter may be connected to front panel jacks which terminate VTVM and output meter circuits, while earphone jacks are also provided for extremely sensitive work. Model TS-2 is a simitarly constructed Stethoscope for portable battery operation.

  Note that the schematic is for a model TS-3A.  The differences between the TS-3 and TS-3A are unknown.

• Source of data
• Radio Retailing (Radio & Television R.)

• Literature/Schematics (1)
• -- Schematic

• Author
• Model page created by Heiko zur Mühlen. See "Data change" for further contributors.

• Other Models

• Here you find 2 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Feiler; Chicago