• Country
• United States of America (USA)

• Manufacturer / Brand
• Patterson Radio Co. / Electric Co.; Los Angeles, CA

• Year
• 1934 ??

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

• Radiomuseum.org ID
• 50365

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

• Number of Tubes
• 2

• Valves / Tubes
• 58 58

• Main principle
• RF-Circuit or wave trap (separate, can also be an antenna with amp.)

• Wave bands
• Broadcast plus more than 2 Short Wave bands.

• Power type and voltage
• Powered by external power supply or a main unit.

• Loudspeaker
• - - No sound reproduction output.

• from Radiomuseum.org
• Model: Pre Selector - Patterson Radio Co. / Electric

• Notes
• Two stage preselector. Covers 550 to 15 metres in four bands. Supply voltages taken from main receiver.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 5 = ca. 1934 and before

• Mentioned in
• Rider's 5-1

• Other Models

• Here you find 111 models, 45 with images and 66 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Patterson Radio Co. / Electric Co.; Los Angeles, CA