• Country
• United States of America (USA)

• Manufacturer / Brand
• Utah Radio Products Co.; Salt Lake City + Chicago

• Year
• 1956

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 123395

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

• Wave bands
• - without

• Power type and voltage
• No Power needed

• from Radiomuseum.org
• Model: HF-400 Trio - Utah Radio Products Co.; Salt

• Dimensions (WHD)
• 12 x 5 x 5 inch / 305 x 127 x 127 mm

• Notes
• Trio was a high frequency enclosure, intended to extend the frequency response of radio and TV sets. Three 3,5 inches tweeters. Frequency from 5 to 15KHz.
  RM, BM, B or C suffix depending upon the finish.

• Price in first year of sale
• 35.00 $

• Literature/Schematics (1)
• The Radio-Electronic Master Buying Guide, 1956

• Author
• Model page created by Emilio Ciardiello. See "Data change" for further contributors.

• Other Models

• Here you find 43 models, 41 with images and 11 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Utah Radio Products Co.; Salt Lake City + Chicago