• Country
• United States of America (USA)

• Manufacturer / Brand
• Master Radio Manufacturing Co.; Los Angeles, CA

• Year
• 1930

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 46855

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

• Number of Tubes
• 6

• Valves / Tubes
• 26 26 26 24 45 80

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown); 1 AF stage(s)

• 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: Master Table Model 50 - Master Radio Manufacturing Co.

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Dimensions (WHD)
• 22 x 10.5 x 10.5 inch / 559 x 267 x 267 mm

• Notes

• One dial (primary tuning control knob)

  Same chassis and speaker as used in the Model 70.

• Price in first year of sale
• 66.50 $

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

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

• Mentioned in
• The Radio Collector's Directory and Price Guide 1921 - 1965 (July 1930, Radio Retailing magazine page 7)

• Other Models

• Here you find 3 models, 2 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Master Radio Manufacturing Co.; Los Angeles, CA