Vacuum Tube Voltmeter (VTVM) IM-28 early (no PCB)

• Country
• United States of America (USA)

• Manufacturer / Brand
• Heathkit (Brand), Heath Co.; Benton Harbor (MI)

• Year
• 1970

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 152525

• • alternative name: Heath Company

• Picture
• Schematics

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

• Number of Tubes
• 2

• Valves / Tubes
• 6AL5 12AU7

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110; 220 AC & DC 1,5 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Vacuum Tube Voltmeter IM-28 [early ] - Heathkit Brand, Heath Co.;

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 290 x 125 x 100 mm / 11.4 x 4.9 x 3.9 inch

• Notes
• Wired completely, no Printed Circuit Board. Modified for Europe in Germany.
  Umschaltbarer Universaltastkopf für Wechselspannungs-, Gleichspannungs- und Widerstandsmessung. Unterschied zu (VTVM): keine Leiterplatte intern, 6,3mm Klinkenbuchse, Preise in Österreich: Bausatz ATS 1850.- Betriebsfertig ATS 2600.-

• Net weight (2.2 lb = 1 kg)
• 2.3 kg / 5 lb 1.1 oz (5.066 lb)

• Mentioned in
• -- Original-techn. papers.

• Author
• Model page created by Dieter ADAM. See "Data change" for further contributors.

• Other Models

• Here you find 715 models, 699 with images and 506 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Heathkit (Brand), Heath Co.; Benton Harbor (MI)