• Country
• United States of America (USA)

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

• Year
• 1936–1938

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 164281

• • Brand: Grunow (trade name)

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

• Number of Tubes
• 7

• Valves / Tubes
• 6K7G 6A8G 6K7G 6Q7G 6G5 6F6G 80

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

• Tuned circuits
• 7 AM circuit(s)

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

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

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 12 inch = 30.5 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: Grunow 755 Ch= 7-Q - General Household Utilities Co

• Shape
• Console with any shape - in general

• Dimensions (WHD)
• 24 x 40 x 11.5 inch / 610 x 1016 x 292 mm

• Notes

• Tuning eye; different power transformers are used for 115 V (50-60 cycle), 115 V (25-50 cycle) or 115, 135, 220, 250 V (50-60 cycle) mains supply. Consoles-model has 7 tubes, electric eye, 12 inch speaker. 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.

• Source of data
• Pre-War Consoles

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

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

• Literature/Schematics (3)
• The Grunow Folder for 1938.

• 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.