FET DIP Oscillator G3WPO Mk2 (Cirkit)

Cirkit dist.Ltd. (Ambit); Broxbourne

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  • Year
  • 1987 ??
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 211609

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

 Technical Specifications

  • Number of Transistors
  • 5
  • Semiconductors
  • Main principle
  • TRF with diode detector
  • Tuned circuits
  • 1 AM circuit(s)
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Dry Batteries / 9 Volt
  • Loudspeaker
  • Electrostatic Loudspeaker (high bias DC voltage) / Ø 1 inch = 2.5 cm
  • Power out
  • 0.01 W (unknown quality)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: FET DIP Oscillator G3WPO Mk2 - Cirkit dist.Ltd. Ambit;
  • Dimensions (WHD)
  • 58 x 92 x 125 mm / 2.3 x 3.6 x 4.9 inch
  • Notes
  • DIP oscillator and Wave meter

    Wavebands from 1.8MHz to 170MHz
    Sensitivity control varies drive from peak rectifier diodes to meter rather than oscillator level
    Oscillator drive level set by resistor on the plug-in coil via 2nd gates of 3SK88 FETs Audible tone volume controlled by detected level (piezo-ceramic beeper)
    You can add your own coils. A common modificaton is an FET buffer (2N3819 or similar) to drive a frequency counter.
    More sensitive Wavemeter and "Dip" than MkI
    Labelled "Made in England by Cirkit", (the MkI in 1981 is "Ambit" branded and has no resistor on the plug in coils to set Oscillator level, so coils are not exchangeable)
    See Articles for operation and use.
    Designs of both versions published in Radcom (RSGB) by G3WPO
  • Net weight (2.2 lb = 1 kg)
  • 0.320 kg / 0 lb 11.3 oz (0.705 lb)
  • Author
  • Model page created by Michael Watterson. See "Data change" for further contributors.

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