• Country
• United States of America (USA)

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

• Year
• 1934

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 44754

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

• Number of Tubes
• 19

• Valves / Tubes
• 58 2A7 58 58 58 58 56 56 56 56 56 56 56 56 2A5 2A5 2A5 2A5 83

• Main principle
• Superhet with RF-stage; ZF/IF 465 kHz; 4 AF stage(s)

• Tuned circuits
• 9 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and more than two Short Wave bands.

• Power type and voltage
• Alternating Current supply (AC) / 115 Volt

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

• from Radiomuseum.org
• Model: W [Explorer] - Howard Radio Company; Chicago

• Notes
• LW (150 - 350 kHz), BC (550 - 1500 kHz), SW1 (1.5 - 4.0 MHz), SW2 (4.0 - 12.0 MHz) and SW3 (11.0 - 25.0 MHz) bands. Heavy push-pull/parallel four tube final AF amplifier. Data and schematic are for final model W. Two earlier versions exist.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 6 = 1935 and before

• 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)