• Country
• United States of America (USA)

• Manufacturer / Brand
• Supreme Instruments Corp.; Greenwood (MS)

• Year
• 1929–1931

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 62375

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

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 50 to 60 cycles, 110 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Radio Diagnometer 400-B - Supreme Instruments Corp.;

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 12 x 7.5 x 16.5 inch / 305 x 191 x 419 mm

• Notes

• The Supreme Diagnometer model 400-B was at least sold in 1929 and 1930 - we don't know yet up to which year. It has 3 precision meters (Weston or Jewell). In its 1930 catalog, Lafayette has put a price of $139.50 USD. See pictures with text. In an ad in "Radio Broadcast" October 1929 the price for this "Radio Diagnometer" model 400-B is also given by Supreme Instruments Corp. as $139.50 USD.

  This unit provides analysis of Penthode, Screen Grid, and Auto Receivers.
  Makes every test on Radio Set.

• Price in first year of sale
• 139.50 $

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

• Mentioned in
• Rider's Perpetual, Volume 2 = 1932 and before

• Literature/Schematics (1)
• Lafayette Radio Catalog (Wholesale Radio Service Co. Inc. catalog 1930 for 1929/30, page 36.)

• Literature/Schematics (2)
• -- Original prospect or advert (“Official Radio Service Manual” 1930, Editor Hugo Gernsback, reprinted 1984 by Vestal Press.)

• Other Models

• Here you find 85 models, 66 with images and 51 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Supreme Instruments Corp.; Greenwood (MS)