• Country
• United States of America (USA)

• Manufacturer / Brand
• Air King Products Co.; Brooklyn (NY)

• Year
• 1939 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 31604

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

• Number of Tubes
• 5

• Valves / Tubes
• 1A7G 1N5G 1H5G 1A5G 35Z5GT

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Line / Batteries (any type) / 110-125 AC/DC ; 90 & 1.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Portorola 3916 - Air King Products Co.;

• Dimensions (WHD)
• 340 x 250 x 175 mm / 13.4 x 9.8 x 6.9 inch

• Notes
• Built in loop antenna.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 11 = ca. 1940 and before

• Mentioned in
• Beitman Radio Diagrams, Vol. 02, 1939

• Other Models

• Here you find 293 models, 145 with images and 240 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Air King Products Co.; Brooklyn (NY)