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Low Frequency radio operations VLF ELF, longwave links

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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
    • VLF Loop Antenna - A project on building a VLF loop antenna
    • Longwave Home Page - The World of Radio Below 500 kHz by the Longwave Club of America
    • Antennas for 136kHz - A very long and exaustive documentation on building antennas for 136 khz. Includes links to antenna design software for longwave
    • A VLF loop by IK0VVE - This antenna was born from the demand to use a loop for vlf operations in portable posting, avoiding the aid of long wires to stretch.
    • Long Wave Radio - Dedicated to 136 Khz band by G3YXM includes news, links and software useful for LF working.
    • 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
    • Introduction to Longwave Radio - A brief introduction to longwave radio
    • Antennas for MF and LF - Long Waves, Short Antennas, designing antennas for MF and LF communications
    Alphabetical
        Result Page:  [<<] 1 2
    • Really Low Frequency Operating - The world below 500 kHz (The wavelength is 1500 meters or just about a mile) has a number of interesting listening and communications opportunities with possibly more to come.
      [ Hits: 684 | Votes: 3 | Rating: 5.67 ]
    • RSGB HF Committee - LF Band activities section
      [ Hits: 440 | Votes: 0 | Rating: 0.00 ]
    • Slow CW Sensitivity - DK8KW laboratory tests to get some indication about the ability to communicate with signals below noise level using Slow-CW.
      [ Hits: 513 | Votes: 2 | Rating: 3.50 ]
    • The Longwave Club of America - Lowfers are folks who experiment with radio communications at unusually low frequencies.
      [ Hits: 121 | Votes: 0 | Rating: 0.00 ]
    • ulfelf : Ulf Elf Group - Ulf Elf Group. Exploration of ULF, ELF, VLF Radio with emphasis on natural radio signals, the Schumann resonances, earthquake precursors, etc.
      [ Hits: 163 | Votes: 3 | Rating: 10.00 ]
    • VK2XV amateur radio - Amateur radio operator working MF and LF bands
      [ Hits: 112 | Votes: 0 | Rating: 0.00 ]
    • VLF broadcast stations (10 - 150 kHz) - List of worldwide radio stations on VLF
      [ Hits: 303 | Votes: 5 | Rating: 7.40 ]
    • VLF Group - Starlab Very low frequency group
      [ Hits: 175 | Votes: 0 | Rating: 0.00 ]
    • VLF Loop Antenna - A project on building a VLF loop antenna
      [ Hits: 4705 | Votes: 1 | Rating: 3.00 ]
    • VLF Natural Radio Discussion Group - Discussion group dedicated to those who enjoy monitoring radio frequencies in the VLF radio spectrum and slightly below the VLF spectrum (3-30 KHz).
      [ Hits: 977 | Votes: 1 | Rating: 8.00 ]
    • VLF Time Signal Broadcasts - Station List Compiled by William Hepburn, LWCA
      [ Hits: 1336 | Votes: 4 | Rating: 4.00 ]
    • 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.
      [ Hits: 2928 | Votes: 5 | Rating: 5.40 ]
    • W1TAG WD2XES WE2XGR/3 - Experimental Stations Run by W1TAG WD2XES has been used to study LF antenna design, propagation and communication modes. Signals from WD2XES have been copied as far away as Russia.
      [ Hits: 238 | Votes: 1 | Rating: 10.00 ]
    • W4DEX Experimental Stations - WD2XSH Experimental Station (505 - 510 KHz) WD2XKO Transmitting Station Stanfield,NC operating between 135.7 to 137.8 KHz.
      [ Hits: 250 | Votes: 0 | Rating: 0.00 ]
    • WD2XGJ Experimental Station - Experimental Longwave Transmissions from Tower Hill wayland Massachusetts Operator Name Warren, Ham Call K2ORS, Frequency: 137.7796 KHz
      [ Hits: 440 | Votes: 0 | Rating: 0.00 ]
      Result Page:  [<<] 1 2
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