• Country
• United States of America (USA)

• Manufacturer / Brand
• Ballantine Laboratories Inc.; Boonton, New Jersey

• Year
• 1942 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 156880

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

• Number of Tubes
• 5

• Valves / Tubes
• 6J7 6SJ7 6SJ7 6AL5 6X5 0A2

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 115; 230 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Rack Mounted Voltmeter 300- S/2 - Ballantine Laboratories Inc.;

• Shape
• Rack

• Notes
• 1 mV to 100 V in five ranges, plus 1 and 10 kV with multipliers; 10 Hz to 150 kHz, logarithmic scale.

• Author
• Model page created by Meyer Rochwerger. See "Data change" for further contributors.

• Other Models

• Here you find 15 models, 10 with images and 9 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ballantine Laboratories Inc.; Boonton, New Jersey