• Country
• United States of America (USA)

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

• Year
• 1962 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 183802

• • alternative name: Heath Company

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

• Number of Tubes
• 9

• Valves / Tubes
• 6AB4 6AB4 6EJ7 or EF184 12AU7 12AU7 12AU7 12AU7 1V2 3RP1 108C1 108C1

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 220 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

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

• Dimensions (WHD)
• 165 x 250 x 280 mm / 6.5 x 9.8 x 11 inch

• Notes

• Deutliche Abweichungen vom bereits angelegten Modell Heathkit IO-21:
  Röhrenanzahl und damit wohl grösserer Schaltungsumfang.
  Zwei Stabis (108C1) statt nur einem.
  Anodenspannungsgleichrichtung mit Diodenbrücke statt mit Röhre.

  Verstärker: X = Y (2 dB von 2 Hz ... 200 KHz), Empfindlichkeit 0,25 Veff.

• Net weight (2.2 lb = 1 kg)
• 4.5 kg / 9 lb 14.6 oz (9.912 lb)

• Source of data
• - - Data from my own collection

• Mentioned in
• Funk-Technik (FT) (9/1962, S. 324 / Werbeanzeige)

• Author
• Model page created by Peter Gruschka. See "Data change" for further contributors.

• Other Models

• Here you find 713 models, 697 with images and 503 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)