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Propagation
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136 kHz Antennas
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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
Longwave Links
136 kHz direct conversion receiver
IK2PII describe here a simple direct conversion receiver thinked for QRSS and DFCW communications as ...
136kHz at G3YMC
136 kHz experience by G3YMC
136KHz portable station
136kHz portable station project by PA4VHF Dick
Votes: 2 | Rating: 9
200W 136 kHz transmitter
A transmitter project for the 136 kHz band by IK2PII
A LF power amplifier
A Low Frequency LF RF Power Amplifier by VK5BR it operates in a linear mode ...
Votes: 2 | Rating: 1.5
Amrad LF operatoins
Lot of useful information on experiments on 136 Khz band with antenna tips DSP infos ...
Votes: 4 | Rating: 9
An easy loop for VLF
An easy VLF loop 200Hz 20kHz reception without transformers by Renato Romero and Marco Bruno ...
Votes: 7 | Rating: 4.86
Antenna Noise and Signal Cancelling at LF
By using the signals from two antennas controlling their relative amplitudes and controlling the phase ...
Votes: 6 | Rating: 4.5
Antenna Noise and Signal Cancelling at LF
The fact that the phasing between a wanted signal and an unwanted signal can be ...
Antennas for MF and LF
Long Waves, Short Antennas, designing antennas for MF and LF communications
Votes: 2 | Rating: 6
CEPT ERC 136 Khz Recommendation
Use of the band of 135.7-137.8 kHz by the amateur service
DK8KW Longwave Information
Useful pages of longwave operations includes a lot of reference files beacons list sounds and ...
Votes: 1 | Rating: 8
European 135.7 - 137.8 kHz Band Plan
This is not an officially recognized band plan for the European LF allocation between 135 ...
Votes: 3 | Rating: 4
Frequency Calibration for Weak Signal Work
Accurate calibration of your receiver and sound card is necessary for good results with the ...
Votes: 1 | Rating: 7
Ham Radio below 9 kHz
DK8KV Longwave information
Votes: 2 | Rating: 6
Introduction to Longwave Radio
A brief introduction to longwave radio
Votes: 5 | Rating: 6.6
Keyboard Modes for 600 Meters
Evaluation of various operating modes on 600 meters
LF MF Antenna Tuner
W5JGV antenna tuner for 150 - 500 Khz band
Votes: 2 | Rating: 8
LF Sound Gallery
Sounds from the 136 kHz band
Votes: 4 | Rating: 3.25
Loading Coil for 136 kHz
Pictures of loading coils according to OK1FIG
Votes: 1 | Rating: 3
Long Wave Radio
The World of LF by G3YXM reference site for longwave operations Introduction to operating on ...
Votes: 1 | Rating: 1
Longwave DXing
Longwave refers to all frequencies below the lower end of the AM broadcasting band at ...
Longwave Home Page
The World of Radio Below 500 kHz by the Longwave Club of America
Votes: 5 | Rating: 7.4
Longwave Information
DK8KW Longwave Information Slow-Voice, Transmitting compressed analog Audio Signals on LF
Longwave operations
In the VLF portion of the spectrum it is easy to listen to the emissions ...
Longwave Overview
Longwave operations in Germany by DF0WD/DL4YHF
Longwave Station
DF0WD DL4YHF Longwave Station include a linear transverter and antenna tuner
Low Frequency operations by W3EEE
A squint at the world of LF This website was initially thrown together to provide ...
Low Frequency Transmission Modes
Article by W1TAG on operating modes used on low banding The 2200 meter band 135 ...
LowFER MedFER HiFER
What's all this stuff about LowFERs, MedFERs and HiFERs? What Is 'Part 15?'
Votes: 1 | Rating: 4
PIC controlled CW BPSK beacon transmitter
A description of a simple Lowfer beacon transmitter.
Votes: 1 | Rating: 3
Propagation on 137 kHz
Propagation in the LF-Band
Votes: 2 | Rating: 1
Radio waves below 22 kHz
Exploring ULF-ELF and VLF radio band
Votes: 6 | Rating: 7.83
Slow CW Sensitivity
DK8KW laboratory tests to get some indication about the ability to communicate with signals below ...
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 - Votes: 1 | Rating: 8
VLF Time Signal Broadcasts
Station List Compiled by William Hepburn, LWCA
Votes: 4 | Rating: 4
VLF-LF And the Loop Aerial
The article discusses the theory of loop aerials for receiving and how they reduce the ...
Votes: 5 | Rating: 5.4
W1TAG WD2XES WE2XGR/3
Experimental Stations Run by W1TAG WD2XES has been used to study LF antenna design propagation ...
Votes: 2 | Rating: 10
W4DEX Experimental Stations
WD2XSH Experimental Station 505 510 KHz WD2XKO Transmitting Station Stanfield NC operating between 135 7 ...
WD2XGJ Experimental Station
Experimental Longwave Transmissions from Tower Hill wayland Massachusetts Operator Name Warren Ham Call K2ORS Frequency ...
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