• Country
• Great Britain (UK)

• Manufacturer / Brand
• Denco, Clacton-on-Sea

• Year
• 1957 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 312573

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

• Number of Tubes
• 1

• Valves / Tubes
• DL92

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• Dry Batteries / 9 Volt

• Material
• Metal case

• from Radiomuseum.org
• Model: Modulated Test Oscillator MTO.1 - Denco, Clacton-on-Sea

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 4.0625 x 5.0625 x 3 inch / 103 x 129 x 76 mm

• Notes

• The unit covers 170kHz - 475kHz and 550kHz - 1600kHz in two ranges. This overall coverage spans the long and medium wavebands, as well as the typical European IF range around 460kHz, and 455kHz as used in American radios. 1600kHz was an IF used by better quality communications receivers where the higher IF reduced the possibility of image reception at high frequencies.

  Used a tapped 9V grid bias battery, typically an Ever Ready Winner 9.

• Price in first year of sale
• 3.75 £

• Mentioned in
• Advertisement in Practical Wireless September 1957

• Author
• Model page created by Stef Niewiadomski. See "Data change" for further contributors.

• Other Models

• Here you find 18 models, 8 with images and 7 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Denco, Clacton-on-Sea