AM
E400799
AM is a radio broadcasting band used for transmitting audio signals via amplitude modulation, commonly for talk radio and news stations.
All labels observed (1)
| Label | Occurrences |
|---|---|
| AM canonical | 2 |
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
amplitude modulation system
ⓘ
radio broadcasting band ⓘ |
| advantage |
long-range coverage especially at night
ⓘ
relatively simple receiver design ⓘ |
| allocatedBy | International Telecommunication Union ⓘ |
| audioBandwidthLimit | about 5 kHz to 10 kHz in typical broadcasting ⓘ |
| bandName | medium wave band in many regions ⓘ |
| canInclude | single-sideband variants in some services ⓘ |
| carrierPropertyVaried | amplitude ⓘ |
| commonContentType |
news bulletins
ⓘ
religious programming ⓘ sports commentary ⓘ talk shows ⓘ traffic reports ⓘ |
| comparedTo | FM broadcasting ⓘ |
| demodulatedBy |
envelope detector
ⓘ
synchronous detector ⓘ |
| disadvantage |
lower audio fidelity than FM
ⓘ
narrower audio bandwidth ⓘ susceptibility to electrical noise ⓘ |
| fullName | Amplitude Modulation ⓘ |
| historicalUse |
aviation communication (AM voice) in some bands
ⓘ
early commercial radio broadcasting ⓘ military radio communication ⓘ |
| informationCarriedIn | variations in carrier amplitude ⓘ |
| modulationType | amplitude modulation ⓘ |
| propagationCharacteristic |
ground wave propagation
ⓘ
skywave propagation at night ⓘ |
| receiverType | AM radio receiver ⓘ |
| regulatedIn |
Europe
ⓘ
Japan ⓘ United States of America ⓘ
surface form:
United States
|
| requires |
audio-frequency modulating signal
ⓘ
carrier wave ⓘ |
| signalFormat | double-sideband with carrier ⓘ |
| subjectTo |
channel spacing regulations
ⓘ
licensing by national regulators ⓘ power limits for transmitters ⓘ |
| transmitterType | AM broadcast transmitter ⓘ |
| typicalFrequencyRange |
530 kHz to 1700 kHz
ⓘ
medium frequency band ⓘ |
| usedFor |
emergency broadcasts
ⓘ
long-distance radio communication ⓘ news radio ⓘ radio broadcasting ⓘ sports radio ⓘ talk radio ⓘ transmitting audio signals ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.