• Country
• United States of America (USA)

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

• Year
• 1961 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 99068

• • alternative name: Heath Company

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

• Number of Tubes
• 8

• Valves / Tubes
• 12AU7 12AU7 12AU7 12AU7 12AX7 6X4 1V2 3RP1

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 105-125 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Oscilloscope IO-21 - Heathkit Brand, Heath Co.;

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 6.5 x 9.5 x 10 inch / 165 x 241 x 254 mm

• Notes
• 20 Hz - 100 kHz in five overlapping ranges.

• Net weight (2.2 lb = 1 kg)
• 4.3 kg / 9 lb 7.5 oz (9.471 lb)

• Price in first year of sale
• 2,900.00 ATS

• Mentioned in
• - - Data from my own collection

• Author
• Model page created by Pius Steiner. 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)