• Country
• United States of America (USA)

• Manufacturer / Brand
• Music Master; Chicago (1930's)

• Year
• 1932 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 285776

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

• Number of Tubes
• 4

• Valves / Tubes
• 58 57 47 80

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

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 120 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 6 inch = 15.2 cm

• Power out
• 2 W (unknown quality)

• Material
• Special material, described in the notes.

• from Radiomuseum.org
• Model: Maestro [4-Tube Tombstone] - Music Master; Chicago 1930's

• Shape
• Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

• Dimensions (WHD)
• 10 x 13 x 9 inch / 254 x 330 x 229 mm

• Notes

• Case is moulded from vulcanised rubber usually called Ebonite.  Original examples of this model have been seen with a base coat of silver paint, with a thin highlighted wash of brown or green.

• Net weight (2.2 lb = 1 kg)
• 18 lb (18 lb 0 oz) / 8.172 kg

• Author
• Model page created by Gary Tempest. See "Data change" for further contributors.

• Other Models

• Here you find 11 models, 10 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Music Master; Chicago (1930's)