• Country
• United States of America (USA)

• Manufacturer / Brand
• Simpson Electric Co.; Chicago, IL - Lac du Flambeau, WI

• Year
• 1956 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 130780

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

• Number of Tubes
• 8

• Valves / Tubes
• 12AU7 6AN8 12AU7 12AT7 6AN8 6AN8 6AN8 5Y3GT

• Wave bands
• VHF incl. FM and/or UHF (see notes for details)

• Power type and voltage
• Alternating Current supply (AC) / 117 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Varidot 434A - Simpson Electric Co.; Chicago,

• Shape
• Tablemodel, with any shape - general.

• Notes
• Instrument designed to provide white dots for use in adjustment of convergence in B&W and color television receivers.
  Covers the low VHF USA band, channels 2 to 6, 55.25 MHz to 83.25 MHz.

• Net weight (2.2 lb = 1 kg)
• 5.3 kg / 11 lb 10.8 oz (11.674 lb)

• Literature/Schematics (1)
• -- Original-techn. papers.

• Author
• Model page created by Víctor Caselli-Diaconescu. See "Data change" for further contributors.

• Other Models

• Here you find 147 models, 130 with images and 60 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Simpson Electric Co.; Chicago, IL - Lac du Flambeau, WI