• Country
• United States of America (USA)

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

• Year
• 1940 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 109147

• • alternative name: GenRad

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

• Number of Tubes
• 8

• Valves / Tubes
• 6J7 6L7 6H6 6J5 6J5 25L6 25L6 5U4

• Wave bands
• Wave Bands given in the notes.

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

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Beat Frequency Oscillator 700a - General Radio Company;

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 490 x 280 x 320 mm / 19.3 x 11 x 12.6 inch

• Notes
• Wide range beat frequency oscillator. 2 bands 0–40 kHz and 10 kHz to 5 MHz.

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

• Author
• Model page created by Federico Valdameri † 7.2015. 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)