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Longwave, the Glossary

In radio, longwave, long wave or long-wave, and commonly abbreviated LW, refers to parts of the radio spectrum with wavelengths longer than what was originally called the medium-wave broadcasting band.^[1]

88 relations: Alexanderson alternator, Allouis, ALS162 time signal, AM broadcasting, Amateur radio, Amateur radio operator, Anthorn Radio Station, Atomic clock, Attenuation, BBC Light Programme, BBC Radio 4, BPC (time signal), Butterworth-Heinemann, Call sign, Cambridge University Press, China, Colorado, Communication with submarines, DCF77, Diffraction, Digital Radio Mondiale, Direction finding, Droitwich Transmitting Station, DXing, Earth, Effective radiated power, Electromagnetic spectrum, Europe 1, F region, Fail-safe, France, Frankfurt, Frequency standard, Geneva Frequency Plan of 1975, Germany, Grimeton Radio Station, Ground conductivity, Ground wave, Hertz, Index of wave articles, International broadcasting, International Telecommunication Union, Ionosphere, ITU Region, JJY, Kennelly–Heaviside layer, Low frequency, LowFER, Medium wave, Mongolia, ... Expand index (38 more) »
Bandplans

Alexanderson alternator

An Alexanderson alternator is a rotating machine, developed by Ernst Alexanderson beginning in 1904, for the generation of high-frequency alternating current for use as a radio transmitter.

See Longwave and Alexanderson alternator

Allouis

Allouis is a commune in the Cher department of the Centre-Val de Loire region of France.

See Longwave and Allouis

ALS162 time signal

ALS162 is a French longwave time signal and standard-frequency radio station and is used for the dissemination of the Metropolitan French national legal time to the public.

See Longwave and ALS162 time signal

AM broadcasting

AM broadcasting is radio broadcasting using amplitude modulation (AM) transmissions.

See Longwave and AM broadcasting

Amateur radio

Amateur radio, also known as ham radio, is the use of the radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communications.

See Longwave and Amateur radio

Amateur radio operator

An amateur radio operator is someone who uses equipment at an amateur radio station to engage in two-way personal communications with other amateur operators on radio frequencies assigned to the amateur radio service.

See Longwave and Amateur radio operator

Anthorn Radio Station

Anthorn Radio Station is a naval and government radio transmitting station located near Anthorn, Cumbria, England, overlooking the Solway Firth, and is operated by Babcock International (with whom former operators VT Communications are now merged).

See Longwave and Anthorn Radio Station

Atomic clock

An atomic clock is a clock that measures time by monitoring the resonant frequency of atoms.

See Longwave and Atomic clock

Attenuation

In physics, attenuation (in some contexts, extinction) is the gradual loss of flux intensity through a medium.

See Longwave and Attenuation

BBC Light Programme

The BBC Light Programme was a national radio station which broadcast chiefly mainstream light entertainment and light music from 1945 until 1967, when it was replaced by BBC Radio 1 and BBC Radio 2.

See Longwave and BBC Light Programme

BBC Radio 4

BBC Radio 4 is a British national radio station owned and operated by the BBC.

See Longwave and BBC Radio 4

BPC (time signal)

BPC is the callsign of a time signal broadcasting from the BPC Shangqiu Low-Frequency Time-Code Radio Station, cooperatively constructed by the National Time Service Center of the Chinese Academy of Sciences and Xi'an Gaohua Technology Co., Ltd.

See Longwave and BPC (time signal)

Butterworth-Heinemann

Butterworth–Heinemann is a British publishing company specialised in professional information and learning materials for higher education and professional training, in printed and electronic forms.

See Longwave and Butterworth-Heinemann

Call sign

In broadcasting and radio communications, a call sign (also known as a call name or call letters—and historically as a call signal—or abbreviated as a call) is a unique identifier for a transmitter station.

See Longwave and Call sign

Cambridge University Press

Cambridge University Press is the university press of the University of Cambridge.

See Longwave and Cambridge University Press

China

China, officially the People's Republic of China (PRC), is a country in East Asia.

See Longwave and China

Colorado

Colorado (other variants) is a landlocked state in the Mountain West subregion of the Western United States.

See Longwave and Colorado

Communication with submarines

Communication with submarines is a field within military communications that presents technical challenges and requires specialized technology.

See Longwave and Communication with submarines

DCF77

DCF77 is a German longwave time signal and standard-frequency radio station.

See Longwave and DCF77

Diffraction

Diffraction is the interference or bending of waves around the corners of an obstacle or through an aperture into the region of geometrical shadow of the obstacle/aperture.

See Longwave and Diffraction

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.

See Longwave and Digital Radio Mondiale

Direction finding

Direction finding (DF), or radio direction finding (RDF), is the use of radio waves to determine the direction to a radio source.

See Longwave and Direction finding

Droitwich Transmitting Station

The Droitwich transmitting station is a large broadcasting facility for long-wave and medium-wave transmissions, established in 1934 in the civil parish of Dodderhill, just outside the village of Wychbold, near Droitwich in Worcestershire, England.

See Longwave and Droitwich Transmitting Station

DXing

DXing, taken from DX, the telegraphic shorthand for "distance" or "distant", 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.

See Longwave and DXing

Earth

Earth is the third planet from the Sun and the only astronomical object known to harbor life.

See Longwave and Earth

Effective radiated power

Effective radiated power (ERP), synonymous with equivalent radiated power, is an IEEE standardized definition of directional radio frequency (RF) power, such as that emitted by a radio transmitter.

See Longwave and Effective radiated power

Electromagnetic spectrum

The electromagnetic spectrum is the full range of electromagnetic radiation, organized by frequency or wavelength.

See Longwave and Electromagnetic spectrum

Europe 1

Europe 1, (Europe un) formerly known as Europe n° 1, is a privately owned radio station created in 1955.

See Longwave and Europe 1

F region

The F region of the ionosphere is home to the F layer of ionization, also called the Appleton–Barnett layer, after the English physicist Edward Appleton and New Zealand physicist and meteorologist Miles Barnett.

See Longwave and F region

Fail-safe

In engineering, a fail-safe is a design feature or practice that, in the event of a failure of the design feature, inherently responds in a way that will cause minimal or no harm to other equipment, to the environment or to people.

See Longwave and Fail-safe

France

France, officially the French Republic, is a country located primarily in Western Europe.

See Longwave and France

Frankfurt

Frankfurt am Main ("Frank ford on the Main") is the most populous city in the German state of Hesse.

See Longwave and Frankfurt

Frequency standard

A frequency standard is a stable oscillator used for frequency calibration or reference.

See Longwave and Frequency standard

Geneva Frequency Plan of 1975

The Geneva Frequency Plan of 1975 (aka "The Final Acts of the Regional Administrative LF/MF Broadcasting Conference (Regions 1 and 3) Geneva, 1975" or simply "GE75") is the internationally agreed frequency plan which was drawn up to implement the provisions of the Final Acts of the Regional Administrative LF/MF Broadcasting Conference (Regions 1 and 3) held in Geneva, Switzerland, in 1975. Longwave and Geneva Frequency Plan of 1975 are Bandplans.

See Longwave and Geneva Frequency Plan of 1975

Germany

Germany, officially the Federal Republic of Germany (FRG), is a country in Central Europe.

See Longwave and Germany

Grimeton Radio Station

Grimeton Radio Station in southern Sweden, close to Varberg in Halland, is an early longwave transatlantic wireless telegraphy station built in 1922–1924, that has been preserved as a historical site.

See Longwave and Grimeton Radio Station

Ground conductivity

Ground conductivity refers to the electrical conductivity of the subsurface of the earth.

See Longwave and Ground conductivity

Ground wave

Ground wave is a mode of radio propagation that consists of currents traveling through the earth.

See Longwave and Ground wave

Hertz

The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), equivalent to one event (or cycle) per second.

See Longwave and Hertz

Index of wave articles

This is a list of wave topics.

See Longwave and Index of wave articles

International broadcasting

International broadcasting consists of radio and television transmissions that purposefully cross international boundaries, often with then intent of allowing expatriates to remain in touch with their countries of origin as well as educate, inform, and influence residents of foreign countries.

See Longwave and International broadcasting

International Telecommunication Union

The International Telecommunication Union (ITU)French: Union Internationale des Télécommunications is a specialized agency of the United Nations responsible for many matters related to information and communication technologies.

See Longwave and International Telecommunication Union

Ionosphere

The ionosphere is the ionized part of the upper atmosphere of Earth, from about to above sea level, a region that includes the thermosphere and parts of the mesosphere and exosphere.

See Longwave and Ionosphere

ITU Region

The International Telecommunication Union (ITU), in its International Radio Regulations, divides the world into three ITU regions for the purposes of managing the global radio spectrum.

See Longwave and ITU Region

JJY

JJY is the call sign of a low frequency time signal radio station located in Japan.

See Longwave and JJY

Kennelly–Heaviside layer

The Heaviside layer, sometimes called the Kennelly–Heaviside layer, named after Arthur E. Kennelly and Oliver Heaviside, is a layer of ionised gas occurring roughly between 90km and 150 km (56 and 93 mi) above the ground — one of several layers in the Earth's ionosphere.

See Longwave and Kennelly–Heaviside layer

Low frequency

Low frequency (LF) is the ITU designation for radio frequencies (RF) in the range of 30–300 kHz.

See Longwave and Low frequency

LowFER

LowFER (Low-Frequency Experimental Radio) refers to experimental radio communication practiced by hobbyists on frequencies below 300 kHz, a part of the radio spectrum known as low frequency.

See Longwave and LowFER

Medium wave

Medium wave (MW) is a part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. Longwave and medium wave are Bandplans.

See Longwave and Medium wave

Mongolia

Mongolia is a landlocked country in East Asia, bordered by Russia to the north and China to the south.

See Longwave and Mongolia

Morse code

Morse code is a telecommunications method which encodes text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs.

See Longwave and Morse code

National Institute of Standards and Technology

The National Institute of Standards and Technology (NIST) is an agency of the United States Department of Commerce whose mission is to promote American innovation and industrial competitiveness.

See Longwave and National Institute of Standards and Technology

Navigation is a field of study that focuses on the process of monitoring and controlling the movement of a craft or vehicle from one place to another.

See Longwave and Navigation

Newnes, New South Wales

Newnes, an abandoned oil shale mining site of the Wolgan Valley, is located in the Central Tablelands region of New South Wales, Australia.

See Longwave and Newnes, New South Wales

Non-directional beacon

A non-directional beacon (NDB) or non-directional radio beacon is a radio beacon which does not include directional information.

See Longwave and Non-directional beacon

Orders of magnitude (length)

The following are examples of orders of magnitude for different lengths.

See Longwave and Orders of magnitude (length)

Public Emergency Radio of the United States

The Public Emergency Radio of the United States was a communications system planned during the Cold War era in the 1970s, to be activated in anticipation of a nuclear attack.

See Longwave and Public Emergency Radio of the United States

QSL card

A QSL card is a written confirmation of either a two-way radiocommunication between two amateur radio or citizens band stations; a one-way reception of a signal from an AM radio, FM radio, television or shortwave broadcasting station; or the reception of a two-way radiocommunication by a third party listener.

See Longwave and QSL card

Radio

Radio is the technology of communicating using radio waves.

See Longwave and Radio

Radio clock

A radio clock or radio-controlled clock (RCC), and often colloquially (and incorrectly) referred to as an "atomic clock", is a type of quartz clock or watch that is automatically synchronized to a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock.

See Longwave and Radio clock

Radio propagation

Radio propagation is the behavior of radio waves as they travel, or are propagated, from one point to another in vacuum, or into various parts of the atmosphere.

See Longwave and Radio propagation

Radio Society of Great Britain

The Radio Society of Great Britain (RSGB) is the United Kingdom's recognised national society for amateur radio operators.

See Longwave and Radio Society of Great Britain

Radio spectrum

The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3,000 GHz (3 THz).

See Longwave and Radio spectrum

Radio teleswitch

A radio teleswitch is a device used in the United Kingdom primarily to allow electricity suppliers to switch large numbers of electricity meters between different tariff rates, by broadcasting an embedded signal in broadcast radio signals.

See Longwave and Radio teleswitch

Radio wave

Radio waves are a type of electromagnetic radiation with the lowest frequencies and the longest wavelengths in the electromagnetic spectrum, typically with frequencies below 300 gigahertz (GHz) and wavelengths greater than, about the diameter of a grain of rice.

See Longwave and Radio wave

Radiodiffusion-Télévision Française

Radiodiffusion-Télévision Française (RTF; French Radio and Television Broadcasting) was the French national public broadcaster television organization established on 9 February 1949 to replace the post-war "''Radiodiffusion Française''" (RDF), which had been founded on 23 March 1945 to replace ''Radiodiffusion Nationale'' (RN), created on 29 July 1939.

See Longwave and Radiodiffusion-Télévision Française

RBU (radio station)

RBU is a time code radio station located in Moscow.

See Longwave and RBU (radio station)

Refraction

In physics, refraction is the redirection of a wave as it passes from one medium to another.

See Longwave and Refraction

Satellite navigation

A satellite navigation or satnav system is a system that uses satellites to provide autonomous geopositioning.

See Longwave and Satellite navigation

Shangqiu

Shangqiu, alternately romanized as Shangkiu, is a city in eastern Henan province, Central China.

See Longwave and Shangqiu

Shipping Forecast

The Shipping Forecast is a BBC Radio broadcast of weather reports and forecasts for the seas around the British Isles.

See Longwave and Shipping Forecast

Shortwave listening

Shortwave listening, or SWLing, is the hobby of listening to shortwave radio broadcasts located on frequencies between 1700 kHz and 30 MHz Listeners range from casual users seeking international news and entertainment programming, to hobbyists immersed in the technical aspects of long-distance radio reception and sending and collecting official confirmations (QSL cards) that document their reception of remote broadcasts (DXing).

See Longwave and Shortwave listening

Shortwave radio

Shortwave radio is radio transmission using radio frequencies in the shortwave bands (SW).

See Longwave and Shortwave radio

Skywave

In radio communication, skywave or skip refers to the propagation of radio waves reflected or refracted back toward Earth from the ionosphere, an electrically charged layer of the upper atmosphere.

See Longwave and Skywave

Submarine

A submarine (or sub) is a watercraft capable of independent operation underwater.

See Longwave and Submarine

Taldom

Taldom (Та́лдом) is a town in Moscow Oblast, Russia, located north of Moscow, on a suburban railway connecting Moscow to Savyolovo.

See Longwave and Taldom

Time from NPL (MSF)

The Time from NPL is a radio signal broadcast from the Anthorn Radio Station near Anthorn, Cumbria, which serves as the United Kingdom's national time reference.

See Longwave and Time from NPL (MSF)

Title 47 CFR Part 15

Code of Federal Regulations, (47 CFR 15) is an oft-quoted part of Federal Communications Commission (FCC) rules and regulations regarding unlicensed transmissions.

See Longwave and Title 47 CFR Part 15

Transmitter

In electronics and telecommunications, a radio transmitter or just transmitter (often abbreviated as XMTR or TX in technical documents) is an electronic device which produces radio waves with an antenna with the purpose of signal transmission up to a radio receiver.

See Longwave and Transmitter

References

[1] https://en.wikipedia.org/wiki/Longwave

Also known as Long Waves, Long radio waves, Long wave, Long wave band, Long wave radio, Long-wave, Longwave radio.

, Morse code, National Institute of Standards and Technology, Navigation, Newnes, New South Wales, Non-directional beacon, Orders of magnitude (length), Public Emergency Radio of the United States, QSL card, Radio, Radio clock, Radio propagation, Radio Society of Great Britain, Radio spectrum, Radio teleswitch, Radio wave, Radiodiffusion-Télévision Française, RBU (radio station), Refraction, Satellite navigation, Shangqiu, Shipping Forecast, Shortwave listening, Shortwave radio, Skywave, Submarine, Taldom, Time from NPL (MSF), Title 47 CFR Part 15, Transmitter, United States, Very low frequency, Warsaw radio mast, Wavelength, WGU-20, World Heritage Site, WWVB, 500 kHz, 630-meter band.

Longwave, the Glossary

Table of Contents

See also

Bandplans

References