• Country
• United States of America (USA)

• Manufacturer / Brand
• Howard Radio Company; Chicago (IL)

• Year
• 1937

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

• Radiomuseum.org ID
• 44710

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

• Number of Tubes
• 8

• Valves / Tubes
• 6K7G 6A8G 6K7G 6Q7G 6C5G 6V6G 6V6G 0Z4

• Main principle
• Superhet with RF-stage; ZF/IF 262 kHz; 2 AF stage(s)

• 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
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Metal case

• from Radiomuseum.org
• Model: HA-8 - Howard Radio Company; Chicago

• Shape
• Chassis only or for «building in»

• Notes
• Push-pull AF amplifier, built-in vibrator for B+.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 10 = 1939 and before

• Mentioned in
• Radio Retailing (Radio & Television R.) (March 1937.)

• Other Models

• Here you find 354 models, 152 with images and 214 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Howard Radio Company; Chicago (IL)