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  • Antenna Noise and Signal Cancelling at LF
    By using the signals from two antennas, controlling their relative amplitudes and controlling the phase of one of them, unwanted signal or unwanted noise can be phased out. Circuitry is described which uses the signal from a wire antenna to provide selective cancelling against the signal output from an LF loop antenna.
  • An easy loop for VLF
    An easy VLF loop, 200Hz-20kHz reception without transformers by Renato Romero and Marco Bruno
  • Longwave Home Page
    The World of Radio Below 500 kHz by the Longwave Club of America
  • VLF-LF And the Loop Aerial
    The article discusses the theory of loop aerials for receiving and how they reduce the level of local noise. A Loop Aerial is described suitable for use on the LF and VLF bands together with a circuit of an interface loop tuner and preamplifier. The discussion extends to the problems of amplifier noise and the advantages of tuning the loop.
  • A LF power amplifier
    A Low Frequency (LF) RF Power Amplifier by VK5BR it operates in a linear mode and can handle CW, AM and SSB.
  • LF MF Antenna Tuner
    W5JGV antenna tuner for 150 - 500 Khz band
  • Antennas for MF and LF
    Long Waves, Short Antennas, designing antennas for MF and LF communications
  • Introduction to Longwave Radio
    A brief introduction to longwave radio
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