• Country
• United States of America (USA)

• Manufacturer / Brand
• Hedco, Chicago

• Year
• 1954

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 143369

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

• Number of Tubes
• 4

• Valves / Tubes
• 1R5 1T4 1S5 3V4

• Main principle
• Superheterodyne (common); ZF/IF 460 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries / 1.5 & 67.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.5 inch = 6.4 cm

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Symphonette Ch= 45-KA-37 - Hedco, Chicago

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes
• The Hedco Model Symphonette 45-KA-37 is an Battery Operated Portable 4 Tube AM Superheterodyne Receiver.

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 1-55, Set 263, Folder 15)

• Author
• Model page created by Egon Penker. See "Data change" for further contributors.

• Other Models

• Here you find 1 models, 1 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hedco, Chicago