• Country
• United States of America (USA)

• Manufacturer / Brand
• Hallicrafters, The; Chicago, IL and Arlington/Grand Prairie, TX

• Year
• 1938/1939

• Category
• Amateur-Receiver (amateur bands, may include broadcast bands)

• Radiomuseum.org ID
• 18686

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

• Number of Tubes
• 8

• Valves / Tubes
• 6K7 6L7 6J5 6K7 6Q7 6J5 6F6 80

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz

• Wave bands
• Broadcast, Short Wave(s) and Police.

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

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Metal case

• from Radiomuseum.org
• Model: Sky Champion S-20 - Hallicrafters, The; Chicago,

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

• Dimensions (WHD)
• 18.5 x 8.5 x 9.375 inch / 470 x 216 x 238 mm

• Notes
• Coverage: 0.540-1.8, 1.7-5.75, 5.62-18.4, 17-44MHz, Recessed Dial. Replaced 1939 by S-20R with single ended tube, el. bandspread. S-20 is much rarer than S-20R

• Net weight (2.2 lb = 1 kg)
• 10.2 kg / 22 lb 7.5 oz (22.467 lb)

• Price in first year of sale
• 50.00 $

• External source of data
• E. Erb 3-907007-36-0

• Source of data
• Communications Receivers

• Circuit diagram reference
• Rider's Perpetual, Volume 14 = 1944 = before 1943

• Mentioned in
• Radio Shack Catalog (1939, p.72)

• Other Models

• Here you find 926 models, 476 with images and 526 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hallicrafters, The; Chicago, IL and Arlington/Grand Prairie, TX