• Country
• United States of America (USA)

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

• Year
• 1932 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 120141

• • alternative name: GenRad

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

• Number of Tubes
• 2

• Valves / Tubes
• 31 31

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Storage and/or dry batteries / 45-150 & 2 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Test Signal Generator 604-B - General Radio Company;

• Shape
• Tablemodel, low profile (big size).

• Notes

• Supplies 3 to 100 MHz with exchangeable coil batteries, 400 Hz internal modulation or external modulation up to 20.000 Hz, one built-in meter.

  This unit must be powered with a CC voltage ranging from 45 to 150 V, depending on the frequency that must be generated. The ignition voltage of the tubes can also be adjusted.

• Source of data
• -- Original prospect or advert

• Literature/Schematics (1)
• Guida Pratica del Radioriparatore E. Costa 3a edizione 1943

• Author
• Model page created by a member from A. 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)