• Country
• United States of America (USA)

• Manufacturer / Brand
• Hammarlund Mfg. Co. Inc.; New York, NY

• Year
• 1930 ??

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

• Radiomuseum.org ID
• 44037

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

• Number of Tubes
• 1

• Valves / Tubes

• Wave bands
• Short Wave (SW only)

• from Radiomuseum.org
• Model: DC Converter - Hammarlund Mfg. Co. Inc.; New

• Notes

• The Hammarlund DC Conerter is for converting DC operated radios to receive shortwave broadcast. It plugs into the sockeet of the receiver's detector tube, which also gives power to the DC Converter.

• External source of data
• Ernst Erb

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

• Other Models

• Here you find 144 models, 92 with images and 58 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hammarlund Mfg. Co. Inc.; New York, NY