• Country
• United States of America (USA)

• Manufacturer / Brand
• McMurdo Silver Co., Inc.(post WW2); Hartford

• Year
• 1948

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 357004

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

• Number of Tubes
• 4

• Valves / Tubes
• 6AL5 6AR5 6AR5 6X4

• Wave bands
• - without

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

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Vomax VTVM 900A - McMurdo Silver Co., Inc.post

• Shape
• Tablemodel, with any shape - general.

• Notes

• 3 (2x1.5) V Dry Cell for Resistance Measurement Range.

• Price in first year of sale
• 68.50 USD

• Mentioned in
• Vacuum-Tube Voltmeters, John F. Rider, 2nd Edition, 1951

• Literature/Schematics (1)
• Radio Craft (May 1948, page 41, "NEW...900A")

• Author
• Model page created by Wolfgang Müllner. See "Data change" for further contributors.

• Other Models

• Here you find 17 models, 9 with images and 9 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from McMurdo Silver Co., Inc.(post WW2); Hartford