US Gloritone Model 99A

• 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
• 224251

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

• Picture
• Schematics

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

• Number of Tubes
• 5

• Valves / Tubes
• 24 24 47 35 80

• Main principle
• Superheterodyne (common); Screengrid 1926-1935

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 60 Hz: 115 Volt

• Loudspeaker
• Permanent or electro-dynamic (moving coil), system not known yet.

• Material
• Wooden case

• from Radiomuseum.org
• Model: US Gloritone Model 99A - Apex Electric, Pool; Chicago;

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

• Dimensions (WHD)
• 375 x 420 x 235 mm / 14.8 x 16.5 x 9.3 inch

• Notes

• See also the model 99-X for 25 Hz line voltage.

  From a US Radio & Television brochure: The Gloritone 99A was manufactured by the United States Radio and Television Corporation of Marion, Indiana.

  The 99A is an ac-powered set that covers the standard broadcast band and uses 5 tubes: 224 (mixer/LO), 235 (IF), 224 (2nd detector), 247 (AF pentode), and 280 (rectifier). The mixer/LO uses a self-oscillating "autodyne" circuit. This was done to combine the operations of the mixer and oscillator into a single tube, thereby minimizing tube count and keeping production costs down. This was a fairly common practice in economy sets of the era. The radio has no Automatic-Volume-Control (AVC) and has its manual volume control placed within the antenna circuit. This same chassis was used for both the 99A table model and the 99B floor model radios. 

• Price in first year of sale
• 40.00 USD

• Mentioned in
• US Radio & Television brochure

• Author
• Model page created by Alan Larsen. See "Data change" for further contributors.

• 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)