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24 relations: Amateur radio, Aurora, Carrier frequency, Deutsche Welle, Digital Radio Mondiale, Dipole antenna, DXing, Frequency, Hertz, International Telecommunication Union, Ionosphere, Loop antenna, Maximum usable frequency, Near vertical incidence skywave, Northern Europe, Radio spectrum scope, Shortwave bands, Sines, Single-sideband modulation, Skip zone, Solar cycle, Telecommunications network, Terminator (solar), Thunderstorm.
Amateur radio
Amateur radio, also known as ham radio, describes the use of radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communication.
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Aurora
An aurora (plural: auroras or aurorae), sometimes referred to as polar lights, northern lights (aurora borealis) or southern lights (aurora australis), is a natural light display in the Earth's sky, predominantly seen in the high-latitude regions (around the Arctic and Antarctic).
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Carrier frequency
In telecommunication systems, Carrier frequency is a technical term used to indicate.
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Deutsche Welle
Deutsche Welle ("German wave" in German) or DW is Germany's public international broadcaster.
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Digital Radio Mondiale
Digital Radio Mondiale (DRM; mondiale being Italian and French for "worldwide") is a set of digital audio broadcasting technologies designed to work over the bands currently used for analogue radio broadcasting including AM broadcasting, particularly shortwave, and FM broadcasting.
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Dipole antenna
In radio and telecommunications a dipole antenna or doublet is the simplest and most widely used class of antenna.
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DXing
DXing is the hobby of receiving and identifying distant radio or television signals, or making two way radio contact with distant stations in amateur radio, citizens' band radio or other two way radio communications.
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Frequency
Frequency is the number of occurrences of a repeating event per unit of time.
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Hertz
The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.
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International Telecommunication Union
The International Telecommunication Union (ITU; Union Internationale des Télécommunications (UIT)), originally the International Telegraph Union (Union Télégraphique Internationale), is a specialized agency of the United Nations (UN) that is responsible for issues that concern information and communication technologies.
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Ionosphere
The ionosphere is the ionized part of Earth's upper atmosphere, from about to altitude, a region that includes the thermosphere and parts of the mesosphere and exosphere.
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Loop antenna
A loop antenna is a radio antenna consisting of a loop or coil of wire, tubing, or other electrical conductor usually fed by a balanced source or feeding a balanced load.
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Maximum usable frequency
In radio transmission maximum usable frequency (MUF) is the highest radio frequency that can be used for transmission between two points via reflection from the ionosphere (skywave or "skip" propagation) at a specified time, independent of transmitter power.
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Near vertical incidence skywave
Near vertical incidence skywave, or NVIS, is a skywave radio-wave propagation path that provides usable signals in the range between groundwave and conventional skywave distances—usually 30–400 miles (50–650 km).
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Northern Europe
Northern Europe is the general term for the geographical region in Europe that is approximately north of the southern coast of the Baltic Sea.
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Radio spectrum scope
The radio spectrum scope (also radio panoramic receiver, panoramic adapter, pan receiver, pan adapter, panadapter, panoramic radio spectroscope, panoramoscope, panalyzor and band scope) was invented by Marcel Wallace and measures the magnitude of an input signal versus frequency within one or more radio bands - e.g. shortwave bands.
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Shortwave bands
Shortwave bands are frequency allocations for use within the shortwave radio spectrum (the upper MF band and all of the HF band).
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Sines
Sines is a Portuguese city of Setúbal District, the Alentejo region and subregion of the Alentejo coast, with about 18,298 inhabitants (2015 INE).
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Single-sideband modulation
In radio communications, single-sideband modulation (SSB) or single-sideband suppressed-carrier modulation (SSB-SC) is a type of modulation, used to transmit information, such as an audio signal, by radio waves.
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Skip zone
A skip zone, also called a silent zone or zone of silence, is a region where a radio transmission can not be received.
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Solar cycle
The solar cycle or solar magnetic activity cycle is the nearly periodic 11-year change in the Sun's activity (including changes in the levels of solar radiation and ejection of solar material) and appearance (changes in the number and size of sunspots, flares, and other manifestations).
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Telecommunications network
A telecommunications network is a collection of terminal nodes, links are connected so as to enable telecommunication between the terminals.
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Terminator (solar)
A terminator or twilight zone is a moving line that divides the daylit side and the dark night side of a planetary body.
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Thunderstorm
A thunderstorm, also known as an electrical storm, lightning storm, or thundershower, is a storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere, known as thunder.
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80 meter, 80 meter band, 80 meters, 80 meters radio band, 80 metres, 80m, 80m band.
References
[1] https://en.wikipedia.org/wiki/80-meter_band
