• Country
• United States of America (USA)

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

• Year
• 1942 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 112253

• • alternative name: GenRad

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

• Number of Tubes
• 3

• Valves / Tubes
• 6H6 6SL7GT 6SL7GT

• Power type and voltage
• 115 Volt

• Material
• Special material, described in the notes.

• from Radiomuseum.org
• Model: 650A Impedance Bridge - General Radio Company;

• Shape
• Tablemodel, slant panel.

• Dimensions (WHD)
• 305 x 225 x 480 mm / 12 x 8.9 x 18.9 inch

• Notes

• Holzgehäuse innen mit Kupfer ausgekleidet mit Kunststoffdeckel, Metall-Innenschale.

  Tube 6SL7GT is on the market not earlier than 1941 or 1942.

• Net weight (2.2 lb = 1 kg)
• 13 kg / 28 lb 10.1 oz (28.634 lb)

• Source of data
• -- Collector info (Sammler)

• Mentioned in
• USA-Communications magazine Nov 1939

• Literature/Schematics (1)
• Manuale Schemi elettrici

• Author
• Model page created by a member from I. See "Data change" for further contributors.

• Other Models

• Here you find 238 models, 212 with images and 128 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from General Radio Company; Cambridge (MA)