• Country
• United States of America (USA)

• Manufacturer / Brand
• Aero Products Inc.; Chicago, Illinois (Hoodwin)

• Year
• 1933 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 31476

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

• Number of Tubes
• 4

• Valves / Tubes
• 58 57 47 unknown_Tube

• Main principle
• TRF without regeneration; Screengrid 1926-1935

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 110 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: International 4 - Aero Products Inc.; Chicago,

• Shape
• Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).

• Notes

• See also Hoodwin 4 Tube AC TRF.

• Price in first year of sale
• 10.95 USD

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 4 = ca. 1934 and before

• Mentioned in
• Cathedral & Tombstone Radios (page 35.)

• Literature/Schematics (1)
• Short Wave Craft May 1933 page 59

• Other Models

• Here you find 21 models, 21 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Aero Products Inc.; Chicago, Illinois (Hoodwin)