• Country
• United States of America (USA)

• Manufacturer / Brand
• Apex Electric, Pool; Chicago; US Radio & Television Corp.; Marion; (US Radio&Refrigeration)

• Year
• 1931

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 63823

• • alternative name: Apex Electric Mfg. || Case Electric || Melrose || United States Radio & T

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

• Number of Tubes
• 4

• Valves / Tubes
• 57 57 47 80

• Main principle
• Superhet, IF regeneration; ZF/IF 455 kHz

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Broadcast only (MW).

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

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: 24 Ch= 400 - Apex Electric, Pool; Chicago;

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

• Dimensions (WHD)
• 300 x 370 x 170 mm / 11.8 x 14.6 x 6.7 inch

• Net weight (2.2 lb = 1 kg)
• 5 kg / 11 lb 0.2 oz (11.013 lb)

• External source of data
• Ernst Erb

• Source of data
• The Radio Collector's Directory and Price Guide 1921 - 1965

• Circuit diagram reference
• Rider's Perpetual, Volume 3 = 1933 and before

• Other Models

• Here you find 226 models, 89 with images and 130 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Apex Electric, Pool; Chicago; US Radio & Television Corp.; Marion; (US Radio&Refrigeration)