• Country
• United States of America (USA)

• Manufacturer / Brand
• General Household Utilities Co. (Grunow); Chicago Ill.

• Year
• 1936/1937

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 164229

• • Brand: Grunow (trade name)

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

• Number of Tubes
• 5

• Valves / Tubes
• 6A7 6D6 76 41 80

• Main principle
• Superheterodyne (common); ZF/IF 465 kHz

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast and Short Wave (SW).

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

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 8 inch = 20.3 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: Grunow 566 Ch= 5-S - General Household Utilities Co

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

• Dimensions (WHD)
• 15 x 9.25 x 7.75 inch / 381 x 235 x 197 mm

• Notes

• This model Grunow 566 has 5 tubes, tuning is 540-4000 kc. See this article containing Teledial models. Also Teledial models of other brands are covered. In particular the nine 1936/37 Grunow models presented in "Radio Retailing", March 1937, are linked.

• Price in first year of sale
• 19.95 $

• Circuit diagram reference
• Rider's Perpetual, Volume 8 = 1937 and before

• Mentioned in
• Radio Retailing (Radio & Television R.) (March 1937.)

• Literature/Schematics (1)
• Machine Age to Jet Age II (page 153.)

• Literature/Schematics (3)
• The Grunow Folder for 1937.

• Author
• Model page created by Hans-Joachim Korn † 16.11.15. See "Data change" for further contributors.

• Other Models

• Here you find 138 models, 100 with images and 126 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from General Household Utilities Co. (Grunow); Chicago Ill.