• Country
• United States of America (USA)

• Manufacturer / Brand
• Guthman & Co., Inc., Edwin I.; Chicago (IL)

• Year
• 1939/1940

• Category
• Commercial Receiver (may include amateur bands)

• Radiomuseum.org ID
• 207872

• Number of Tubes
• 10

• Valves / Tubes
• 7A7 6J5 6SF5 6K8 VR150 6B8 6SK7 6SK7 7C5 7C5 80

• Main principle
• Superheterodyne (common)

• Wave bands
• Broadcast plus more than 2 Short Wave bands.

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• Presumably Dynamic Loudspeaker (moving coil)

• Power out
• 12 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: U-50 - Guthman & Co., Inc., Edwin I.;

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

• Notes
• Guthman Silver Super U-50K (kit) / U-50W (wired): coverage 525 kHz - 62 MHz in six switchable bands, regenerative IF, crystal filter.
  Sold as kit (U-50K, 49,95 US$) or already wired (U-50W).
  Set designed by McMurdo Silver, who was employed by Edwin I. Guthman as chief engineer after his company folded in 1938 and designed a line of amateur radio equipment.

• Price in first year of sale
• 57.00 $

• Source of data
• Communications Receivers

• Author
• Model page created by Martin Bösch. See "Data change" for further contributors.

• Other Models

• Here you find 7 models, 7 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Guthman & Co., Inc., Edwin I.; Chicago (IL)