• Country
• United States of America (USA)

• Manufacturer / Brand
• Keithley Instruments Inc.; Cleveland (OH)

• Year
• 1960 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 279233

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

• Number of Tubes
• 5

• Valves / Tubes
• 6419

• Number of Transistors
• 4

• Semiconductors

• Wave bands
• - without

• from Radiomuseum.org
• Model: Milliohmmeter 502 - Keithley Instruments Inc.;

• Author
• Model page created by John McGinty. See "Data change" for further contributors.

• Other Models

• Here you find 38 models, 33 with images and 16 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Keithley Instruments Inc.; Cleveland (OH)