• Country
• United States of America (USA)

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

• Year
• 1931

• Category
• Pre-stage (adaptor for SW/FM/VHF/UHF incl. built-in), Frequency converter

• Radiomuseum.org ID
• 57956

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

• Number of Tubes
• 3

• Valves / Tubes
• 24 27 26

• Main principle
• Superheterodyne (common); ZF/IF 1000 kHz; Screengrid 1926-1935

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Alternating Current supply (AC) / 110 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: SW Converter 738 AC - Silver - Marshall; Chicago, IL

• Shape
• Tablemodel, with any shape - general.

• Notes
• Short Wave Converter. To be attached to any broadcast set.
  Listed price without tubes!

• Price in first year of sale
• 69.00 $

• External source of data
• Ernst Erb

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

• Circuit diagram reference
• Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

• Mentioned in
• Advert in Radio News Jan. 1931

• 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