• Country
• United States of America (USA)

• Manufacturer / Brand
• United Motors Service (Delco)

• Year
• 1947

• Category
• Car Radio, perhaps also + sound player/recorder

• Radiomuseum.org ID
• 64397

• • alternative name: Delco Radio Corp. (Appliance) || Delco-Remy Division, General Motors Corp. || United Motors Service Delco General Motors
  • Brand: Chieftain || Delco

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

• Number of Tubes
• 6

• Valves / Tubes
• 6SK7GT 6SA7GT 6SK7GT 6SQ7GT 6V6GT 0Z4

• Main principle
• Superhet with RF-stage; ZF/IF 262 kHz

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / =6 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Metal case

• from Radiomuseum.org
• Model: 2233029 GMC Truck Radio - United Motors Service Delco

• Shape
• Chassis only or for «building in»

• Notes

• Battery operated custom built truck superheterodyne receiver.

  Tuning range - broadcast 550 - 1600 kc.

  Elliptical electrodyn. speaker with cone dia 6 1/8" x 9".

  Vibrator for +B.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 18 = 1949 and before

• Mentioned in
• Photofact Folder, Howard W. SAMS (Set 93 Folder 6 Date 5-50)

• Other Models

• Here you find 585 models, 331 with images and 548 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from United Motors Service (Delco)