• Country
• United States of America (USA)

• Manufacturer / Brand
• Insuline Corp. Of America (ICA); New York City

• Year
• 1931

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 44923

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

• Number of Tubes
• 5

• Valves / Tubes
• 36 36 36 33 33

• Main principle
• TRF without regeneration; 1 AF stage(s)

• Tuned circuits
• 3 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Direct Current supply (DC) / 105-120; 220-240 Volt

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

• from Radiomuseum.org
• Model: Envoy Midget - Insuline Corp. Of America ICA;

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

• Notes
• Parallel tube AF amplifier. There are two versions: either 105-120 V or 220-240 V.

• Net weight (2.2 lb = 1 kg)
• 11 kg / 24 lb 3.7 oz (24.229 lb)

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)

• Literature/Schematics (1)
• -- Collector info (Sammler)

• Other Models

• Here you find 91 models, 22 with images and 39 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Insuline Corp. Of America (ICA); New York City