• Country
• United States of America (USA)

• Manufacturer / Brand
• Harvey Radio Labs., Harvey - Wells; Brookline, Southbridge, MA

• Year
• 1934

• Category
• Amateur Transmitter (only)

• Radiomuseum.org ID
• 286216

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

• Number of Tubes
• 7

• Valves / Tubes
• 59 59 RK20 RK20 56 45 45

• Main principle
• Transmitter

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Powered by external power supply or a main unit.

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Transmitter RK-20 - Harvey Radio Labs., Harvey -

• Shape
• Rack

• Notes

• The Harvey Radio Laboratories RK-20 Transmitter has an output of 30 watts phone and 100 watts CW on the 160, 80, 40, 20 and 10 meter bands. 

• Price in first year of sale
• 69.50 USD

• Mentioned in
• QST (August 1934 pages 27-31)

• Author
• Model page created by Wayne Childress. See "Data change" for further contributors.

• Other Models

• Here you find 35 models, 26 with images and 7 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Harvey Radio Labs., Harvey - Wells; Brookline, Southbridge, MA