Longwave

Low Frequency VLF ELF

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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

  • A LF power amplifier

    • A Low Frequency LF RF Power Amplifier by VK5BR it operates in a linear mode ...
    Hits: 3323 | Votes: 2 | Rating: 1.5

  • Amrad LF operatoins

    • Lot of useful information on experiments on 136 Khz band with antenna tips DSP infos ...
    Hits: 1403 | Votes: 4 | Rating: 9

  • An easy loop for VLF

    • An easy VLF loop 200Hz 20kHz reception without transformers by Renato Romero and Marco Bruno ...
    Hits: 7488 | Votes: 8 | Rating: 4.38

  • Antennas for MF and LF

    • Long Waves, Short Antennas, designing antennas for MF and LF communications
    Hits: 2406 | Votes: 2 | Rating: 6

  • DK8KW Longwave Information

    • Useful pages of longwave operations includes a lot of reference files beacons list sounds and ...
    Hits: 1464 | Votes: 1 | Rating: 8

  • LF MF Antenna Tuner

    • W5JGV antenna tuner for 150 - 500 Khz band
    Hits: 2864 | Votes: 2 | Rating: 8

  • LF Sound Gallery

    • Sounds from the 136 kHz band
    Hits: 1019 | Votes: 4 | Rating: 3.25

  • Long Wave Radio

    • The World of LF by G3YXM reference site for longwave operations Introduction to operating on ...
    Hits: 630 | Votes: 1 | Rating: 1

  • Longwave DXing

    • Longwave refers to all frequencies below the lower end of the AM broadcasting band at ...
    Hits: 308

  • Longwave Home Page

    • The World of Radio Below 500 kHz by the Longwave Club of America
    Hits: 4891 | Votes: 5 | Rating: 7.4

  • Longwave Information

    • DK8KW Longwave Information Slow-Voice, Transmitting compressed analog Audio Signals on LF
    Hits: 240

  • Longwave operations

    • In the VLF portion of the spectrum it is easy to listen to the emissions ...
    Hits: 835

  • Longwave Station

    • DF0WD DL4YHF Longwave Station include a linear transverter and antenna tuner
    Hits: 354

  • LowFER MedFER HiFER

    • What's all this stuff about LowFERs, MedFERs and HiFERs? What Is 'Part 15?'
    Hits: 680 | Votes: 1 | Rating: 4

  • NDBs Received Worldwide

    • Database of 17 000 NDBs Ham Beacons Navtex DGPS and Utility stations received at over ...
    By: VA3PHP Hits: 53

  • Slow CW Sensitivity

    • DK8KW laboratory tests to get some indication about the ability to communicate with signals below ...
    Hits: 680 | Votes: 2 | Rating: 3.5

  • VLF Natural Radio Discussion Group

    • Discussion group dedicated to those who enjoy monitoring radio frequencies in the VLF radio spectrum ...
    By: KB0LSW Hits: 1181 | Votes: 1 | Rating: 8

  • VLF-LF And the Loop Aerial

    • The article discusses the theory of loop aerials for receiving and how they reduce the ...
    Hits: 3430 | Votes: 6 | Rating: 4.67

  • W1TAG WD2XES WE2XGR/3

    • Experimental Stations Run by W1TAG WD2XES has been used to study LF antenna design propagation ...
    Hits: 394 | Votes: 2 | Rating: 10

  • W4DEX Experimental Stations

    • WD2XSH Experimental Station 505 510 KHz WD2XKO Transmitting Station Stanfield NC operating between 135 7 ...
    Hits: 436

  • WD2XGJ Experimental Station

    • Experimental Longwave Transmissions from Tower Hill wayland Massachusetts Operator Name Warren Ham Call K2ORS Frequency ...
    Hits: 597
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