• Country
• United States of America (USA)

• Manufacturer / Brand
• Johnson Company, E.F.; Waseca, MN

• Year
• 1959–1965 ?

• Category
• Amateur Transmitter (only)

• Radiomuseum.org ID
• 219753

• • Brand: Viking

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

• Number of Tubes
• 7

• Valves / Tubes
• 6DS5 or 6AU6 6DQ6A 6DQ6A 6DQ6A 12AX7 6AQ5 5U4GB

• Main principle
• Transmitter

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Alternating Current supply (AC) / 117 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Viking Challenger 240-182 - Johnson Company, E.F.; Waseca,

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 13.25 x 9 x 10 inch / 337 x 229 x 254 mm

• Notes
• The Challenger is a single knob bandswitched transmitter covering the amateur 80 through 6 meter bands and providing both CW and Phone operation. Frequency control is provided by crystal or external VFO. The power input rating is 120 watts CW and 70 watts Phone with the input restricted to 85 watts on 6 meters. 1959 kit price 114,75 $, wired and tested 154,75 $.

• Net weight (2.2 lb = 1 kg)
• 24 lb 0 oz (24 lb) / 10.896 kg

• Price in first year of sale
• 155.00 $

• Source of data
• - - Manufacturers Literature

• Author
• Model page created by Götz Linss † 27.06.21. See "Data change" for further contributors.

• Other Models

• Here you find 66 models, 56 with images and 29 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Johnson Company, E.F.; Waseca, MN