• Country
• Great Britain (UK)

• Manufacturer / Brand
• Heathkit (UK) by Daystrom

• Year
• 1971 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 79960

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

• Number of Tubes
• 7

• Valves / Tubes
• 12AX7 12AX7 12AU7 12AU7 12AU7 6C4 6X4

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110, 220 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Electronic-Switch S-3U - Heathkit UK by Daystrom

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 242 x 173 x 129 mm / 9.5 x 6.8 x 5.1 inch

• Notes

• The model S-3U differs from the model S-3 by a fifth chopper frequency step of about 10kHz.
  
  Similarly, the front Panel Rate switch also has five levels instead of just four as in Model S-3.

   

  (Bausatz 149 DM, Fertiggerät 285 DM.
  Das Modell S-3U unterscheidet sich vom Modell S-3 durch eine fünfte Chopper-Frequenzstufe von ca 10kHz. Dementsprechend weist auch der "Rate"-Schalter auf der Frontplatte fünf Stufen auf statt nur vier wie bei Modell S-3.)

   

• Net weight (2.2 lb = 1 kg)
• 3.7 kg / 8 lb 2.4 oz (8.15 lb)

• Mentioned in
• -- Original prospect or advert (deutscher Heathkit Katalog 1971/72)

• Author
• Model page created by Hinrich Grensemann † 15.5.16. See "Data change" for further contributors.

• Other Models

• Here you find 55 models, 53 with images and 26 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Heathkit (UK) by Daystrom