• Country
• United States of America (USA)

• Manufacturer / Brand
• Stewart Warner Corp.; Chicago (IL)

• Year
• 1936/1937

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 60917

• • Brand: Ferrodyne

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

• Number of Tubes
• 5

• Valves / Tubes
• 6A8G 6K7G 6Q7G 6K6G 5V4G

• Main principle
• Superheterodyne (common); ZF/IF 262 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast plus 2 Short Wave bands.

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

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 6 inch = 15.2 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: 1691 Ch= R-169 - Stewart Warner Corp.; Chicago

• Shape
• Tablemodel, with any shape - general.

• Notes

• The Stewart Warner model 1691 uses chassis R169. According to Rider's 8-11 of November 1936 is that the same chassis as R-172 but without "Tuning Eye Indicator". Tuning range is from 525 kc to 18.1 mc. The same documentation is shared by models 1691 to 1695 (with R-169) and models 1721 to 1729 with chassis R-172. They also call the family "model R-182-X" (with Phonograph toggle switch, Power transformer 100-240 volts 25-133 cycles, fuse and phonograph terminal strip). There is a 8 inch (R-247-A) or a 12 inch dynamic speaker (R-248-A), depending on the model. Stein mentiones 6 tubes but only broadcast plus one short wave.

• External source of data
• Ernst Erb

• Source of data
• The Radio Collector's Directory and Price Guide 1921 - 1965

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

• Mentioned in
• Table Top Radios Vol. 1 Stein 98

• Literature/Schematics (1)
• Machine Age to Jet Age II (page 290.)

• Literature/Schematics (2)
• Cathedral & Tombstone Radios (page 259.)

• Literature/Schematics (3)
• -- Original prospect or advert (The Stewart-Warner Folder for 1937.)

• Other Models

• Here you find 2120 models, 397 with images and 1977 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Stewart Warner Corp.; Chicago (IL)