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gptkbp:instanceOf
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gptkb:radio_broadcasting_technology
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gptkbp:alternativeTo
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satellite radio
internet radio
FM radio broadcasting
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gptkbp:antennaType
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vertical monopole antenna
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gptkbp:audio
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narrower than FM
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gptkbp:broadcasts
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monophonic sound
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gptkbp:canBe
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local station
clear-channel station
regional station
international station
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gptkbp:canBeSimulcastWith
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digital AM (HD Radio)
|
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gptkbp:competitor
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digital radio
FM radio broadcasting
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gptkbp:decliningPopularity
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since late 20th century
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gptkbp:firstAired
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1906
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gptkbp:frequency
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530 kHz to 1700 kHz
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gptkbp:inventedBy
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gptkb:Reginald_Fessenden
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gptkbp:mayReceive
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gptkb:AM_radio_receivers
car radios
portable radios
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gptkbp:operates
|
medium frequency band
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gptkbp:regulates
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gptkb:Federal_Communications_Commission
gptkb:International_Telecommunication_Union
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gptkbp:servesArea
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long distance, especially at night
|
|
gptkbp:signalQuality
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susceptible to static and interference
|
|
gptkbp:subject
|
atmospheric noise
fading
electrical interference
nighttime skywave propagation
daytime groundwave propagation
multipath distortion
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gptkbp:transmission
|
analog
|
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gptkbp:transmittedBy
|
audio signals
|
|
gptkbp:transmitterLocation
|
varies from less than 1 kW to 50 kW or more
|
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gptkbp:usedFor
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gptkb:news
gptkb:sports_commentator
gptkb:music
talk shows
public service announcements
religious programming
government information
|
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gptkbp:usedIn
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gptkb:Asia
gptkb:Australia
gptkb:Europe
gptkb:North_America
rural areas
emergency broadcasting
|
|
gptkbp:uses
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gptkb:amplitude_modulation
|
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gptkbp:bfsParent
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gptkb:MF_(medium_frequency)
gptkb:WNYC_radio_transmission_towers
|
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gptkbp:bfsLayer
|
7
|
|
https://www.w3.org/2000/01/rdf-schema#label
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AM radio broadcasting
|