• Country
• United States of America (USA)

• Manufacturer / Brand
• Silver - Marshall; Chicago, IL

• Year
• 1931

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 58014

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

• Number of Tubes
• 5

• Valves / Tubes
• 24 27 24 45 80

• Main principle
• TRF with regeneration; Screengrid 1926-1935

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Alternating Current supply (AC) / 105-120 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Metal case

• from Radiomuseum.org
• Model: Bearcat SM-737 - Silver - Marshall; Chicago, IL

• Shape
• Tablemodel, with any shape - general.

• Notes

• The Silver-Marshall 737AC Bearcat is a short wave receiver covering 19.5 to 183 meters in four bands with the supplied 8 plug-in coils (two coils per band). Additionally, four accessory coils could be purchased to cover down to 592 meters. The S-M 870 and S-M 850 speakers could be used with the 737AC. Interestingly, the receiver utilizes a National Company Type B Dial for tuning.

  Coil Data:

  131L	19.5-31.3 meters
  131M	30 -56 meters
  131N	54-101.5 meters
  131O	98-183 meters
  131P	163-343 meters (Accessory Coil)
  131Q	273-592 meters (Accessory Coil)

   

• Price in first year of sale
• 139.00 $

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Mentioned in
• Rider's Perpetual, Volume 1 = 1931/1934 (1919 to 1931) (Advert in Radio News Jan. 1931)

• Literature/Schematics (1)
• S-M Data Sheet 737AC Oct. 1930

• Other Models

• Here you find 225 models, 116 with images and 122 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Silver - Marshall; Chicago, IL