• Country
• United States of America (USA)

• Manufacturer / Brand
• Readrite Meter Works; Bluffton (OH)

• Year
• 1930 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 54968

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

• Number of Tubes
• 1

• Valves / Tubes
• 30

• Wave bands
• - without

• Power type and voltage
• Dry Batteries / 3 & 22.5 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Various materials

• from Radiomuseum.org
• Model: Oscillator 550 - Readrite Meter Works; Bluffton

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 11.5 x 6 x 5.5 inch / 292 x 152 x 140 mm

• Notes
• Licensed by A.T. & T. Co. Direct reading 550 - 1500 kHz and 120 - 185 kHz. Sharp 2d and 3d harmonics for 260 - 475 kHz.

• Net weight (2.2 lb = 1 kg)
• 3.6 kg / 7 lb 14.9 oz (7.93 lb)

• Price in first year of sale
• 30.00 $

• External source of data
• Ernst Erb

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

• Mentioned in
• Radio-Craft, Aug.1932, p.115

• Other Models

• Here you find 45 models, 35 with images and 22 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Readrite Meter Works; Bluffton (OH)