amplitude modulation

(redirected from AM station)
Also found in: Thesaurus, Medical, Financial, Encyclopedia.
Related to AM station: AM broadcasting

amplitude modulation

n. Abbr. AM
1. The encoding of a carrier wave by varying its amplitude in accordance with an input signal.
2. A broadcast system that uses amplitude modulation.

amplitude modulation

n
1. (Telecommunications) one of the principal methods of transmitting audio, visual, or other types of information using radio waves, the relevant signal being superimposed onto a radio-frequency carrier wave. The frequency of the carrier wave remains unchanged but its amplitude is varied in accordance with the amplitude of the input signal. Abbreviation: AM or am Compare frequency modulation
2. (Telecommunications) a wave that has undergone this process

am

(æm; unstressed əm, m)

v.
1st pers. sing. pres. indic. of be.
[before 900; Old English am, eam, eom]

AM

1. Asian male.
2. amplitude modulation: a method of impressing a signal on a radio carrier wave by varying its amplitude.
3. a system of broadcasting using this method.
Compare FM.
[1935–40]

Am


Chem. Symbol.
americium.

Am.

1. America.
2. American.

A.M.

Master of Arts.
[< Latin Artium Magister]

a.m.

or A.M.,

1. before noon.
2. the period from midnight to noon, esp. the period of daylight prior to noon.
Compare p.m.
[1755–65; < Latin ante merīdiem]
usage: The abbreviation a.m. refers to the period from midnight until noon. One minute before noon is 11:59 a.m. One minute after noon is 12:01 p.m. Many people distinguish between noon and midnight by saying 12 noon and 12 midnight. Expressions such as 6 a.m. in the morning and 9 p.m. at night are redundant.

amplitude modulation

A method of radio broadcasting in which the amplitude of the wave that carries the sound signal changes to reflect the various sounds that are to be reproduced, while the frequency of the wave remains the same. Compare frequency modulation.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.amplitude modulation - modulation of the amplitude of the (radio) carrier waveamplitude modulation - modulation of the amplitude of the (radio) carrier wave
modulation - (electronics) the transmission of a signal by using it to vary a carrier wave; changing the carrier's amplitude or frequency or phase
Translations
AMAmplitudenmodulation
modulation d'amplitude
References in periodicals archive ?
Its banner station is dzRH, the only nationwide AM station in the country.
He added that it was sad the AM station was off air for nearly 17 years.
the company that until last year managed the programming of the 740 AM station formerly known as "Boricua 740," filed for Chapter 7 liquidation at the U.
6, KWHN-AM, 1320, a news-talk format owned by Clear Channel, is the only AM station in the top 10.
Known as WEIM until April 2009, the AM station was bought by Central Broadcasting Co.
Currently it is working on AM station in Gedaref, eastern Sudan.
The 1359 AM station was originally set up to broadcast all sorts of news and community programmes to the Cardiff area.
Daily Breeze reports the El Segundo city council has approved buying a low-power AM station to be used by the city to inform its citizens.
In contrast, Blanco-Pi says AM synchronous boosters do not violate the competitive bidding processes and are "merely another tool that could be used by an AM station to improve and/or expand their coverage areas,just as an AM stations are entitled to use complex directional arrays, increase power or relocate their transmitter sites to extend their coverage.
This act allows AM licensees to buy or arrange to programme an FM translator to rebroadcast an AM station.
to swap 13 stations in Tampa and Charlotte, as well as one AM station in Philadelphia for two FM stations in Philadelphia, and three stations in Miami.