• Country
• United States of America (USA)

• Manufacturer / Brand
• Simpson Electric Co.; Chicago, IL - Lac du Flambeau, WI

• Year
• 1950 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 221181

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

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Wave bands
• - without

• Power type and voltage
• Dry Batteries

• Loudspeaker
• - - No sound reproduction output.

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Microvolt Attenuator 260 Adapter 655 - Simpson Electric Co.; Chicago,

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

• Notes
• DC µV "Add-A-Tester" adapter for the Simpson 260 VOM; range: 25µV - 250mV.

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

• Other Models

• Here you find 147 models, 130 with images and 60 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Simpson Electric Co.; Chicago, IL - Lac du Flambeau, WI