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G7KLJ: Low-bands Radio Station

Amateur Radio for the low bands: 630m, 160m, 80m

Welcome to G7KLJ.com -- from Steve in Ashford, Kent.

Contact me

Contact Steve

Other Pages…

  • Cheap MOSFETs in amateur radio linear amplifiers
  • Class E AM Transmitter with Pulse Width Modulator
    • Medium to High Power Class E Transmitter
      • Transmit / Receive Sequencer Circuit
    • Video of Class D/E AM transmitter modulated 200%
  • Class E output Stage on 13V for g7hzi
    • Class E MOSFET Output Stage for 80m
  • Man-made noise (QRM) on 160m at my location
  • MOSFET linear amp – A New Home
    • Power Supply / Control / Power protection for HomeBrew HF MOSFET Linear Amplifier
    • MOSFET Linear Amplifier: Output Filtering
  • Phasing out the shite for listening on skywave
  • RF Linear Amplifier using cheap switching MOSFETs — It Works!
  • The “end fed dipole”
  • Topband (160m, “Top Band”) receiving antennas
    • Improving Front to Back Ratio of the K9AY Loop – cheaply!
  • Home Brew Winched-up Mast for Ham Radio
    • Home-Brew tilt-over radio mast – 50 ft. high
  • When and where to look for AM on 160m from Kent and Essex
  • Contact
  • Experimental AM Modulator for g7hzi
  • My Class E AM Transmitter with Class H Modulator
  • Reliable Top Band, 80m and 160 Propagation Indicators?
  • Opus DirectShow Streaming Decoder Filter
  • Specialist Bespoke Joinery

Medium to High Power Class E Transmitter

Got a spare 1kVA transformer laying about, going to turn it into a medium power 160m and 80m AM transmitter. Or, at least I will try…

Let’s start with a design for smooth and 100% reliable RX/TX change-over. (Transmit sequencer circuit)

 

 

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