• Country
• United States of America (USA)

• Manufacturer / Brand
• Fluke, John, Mfg. Co. Inc.; Everett (WA)

• Year
• 1977 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 139652

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
• Line / Storage batteries (perhaps also batteries) / 115; 230 / unknown Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Null Detektor / Meter 845AB - Fluke, John, Mfg. Co. Inc.;

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 216 x 178 x 203 mm / 8.5 x 7 x 8 inch

• Notes
• Null Detektor/Meter, extremely high input impedance, greater than 10¹² Ohm.
  19 ranges from 1µV to 1000V.
  Floating input to 1100V above ground.
  Recorder output isolated from input.
  Accuracy: ±(2% end-scale +0.1µV)
  Spannung und Strom der Akkus nicht bekannt.
  Originalpreis in D: 7120 DM.

• Net weight (2.2 lb = 1 kg)
• 4.6 kg / 10 lb 2.1 oz (10.132 lb)

• Source of data
• - - Data from my own collection

• Author
• Model page created by Rudolf Osterkamp. See "Data change" for further contributors.

• Other Models

• Here you find 93 models, 88 with images and 66 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Fluke, John, Mfg. Co. Inc.; Everett (WA)