• Country
• United States of America (USA)

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

• Year
• 1962 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 295475

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

• Number of Tubes
• 9

• Valves / Tubes
• 5654 5654 6EJ7 6EJ7 6EJ7 6EJ7 8223 12B4A 5651 0A2 0B2 5V4G

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 105-125 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: True RMS Voltmeter 320A - Ballantine Laboratories Inc.;

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 8.375 x 15.125 x 11.76 inch / 213 x 384 x 299 mm

• Notes

• Voltage range: 100µV to 330V (10µV sensitivity as null detector)

  dB range: -80dB to +40dB

  Freq range: 5Hz to 4MHz

  Accuracy: 2-7%

• Net weight (2.2 lb = 1 kg)
• 22 lb (22 lb 0 oz) / 9.988 kg

• Literature/Schematics (1)
• - - Manufacturers Literature (Instruction Book for Model 320A True Root Mean Square Electronic Voltmeter)

• Literature/Schematics (2)
• - - Manufacturers Literature (Ballantine Electronic Instruments Catalog (~1967))

• Author
• Model page created by James Baker. See "Data change" for further contributors.

• Other Models

• Here you find 17 models, 12 with images and 12 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ballantine Laboratories Inc.; Boonton, New Jersey