• Country
• United States of America (USA)

• Manufacturer / Brand
• General Radio Company; Cambridge (MA)

• Year
• 1949 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 357036

• • alternative name: GenRad

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

• Number of Tubes
• 3

• Valves / Tubes
• 957 1S5 1S5

• Wave bands
• - without

• Power type and voltage
• Dry Batteries / 30 & 7.5 & 1 x 1.5 & 1 x 1.5 & 1 x 1.5 Volt

• Loudspeaker
• - - No sound reproduction output.

• from Radiomuseum.org
• Model: Vacuum-Tube Voltmeter 727A - General Radio Company;

• Mentioned in
• Vacuum-Tube Voltmeters, John F. Rider, 2nd Edition, 1951

• Author
• Model page created by Wolfgang Müllner. See "Data change" for further contributors.

• Other Models

• Here you find 241 models, 212 with images and 131 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from General Radio Company; Cambridge (MA)