Glossary: Difference between revisions
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A '''band''' is a contiguous segment of the radio frequency spectrum. For example, the 2 meter band, the most widely used [[VHF]] amateur radio band, extends from 144 to 148 MHz (megahertz). (Megahertz are a measurement of frequency.) Bands can overlap; for example, VHF itself is the band of frequencies from 30 to 300 MHz. | A '''band''' is a contiguous segment of the radio frequency spectrum. For example, the 2 meter band, the most widely used [[VHF]] amateur radio band, extends from 144 to 148 MHz (megahertz). (Megahertz are a measurement of frequency.) Bands can overlap; for example, VHF itself is the band of frequencies from 30 to 300 MHz. | ||
== Bandwidth == | |||
'''Bandwidth''' is the width of the [[#Band|band]] occupied by a particular signal. It varies significantly with the [[mode]] in use; an [[FT8]] signal has a bandwidth of about 50 [[#Hertz|Hz]], while an [[SSB]] signal is typically about 3,000 Hz (3 kHz). All else being equal, a signal with a narrower bandwidth will be received more strongly than a wider signal, but will not convey as much information in a given period of time. | |||
== Packet Radio == | == Packet Radio == | ||
Revision as of 19:25, 26 February 2023
This is a glossary of common amateur radio terms.
Band
A band is a contiguous segment of the radio frequency spectrum. For example, the 2 meter band, the most widely used VHF amateur radio band, extends from 144 to 148 MHz (megahertz). (Megahertz are a measurement of frequency.) Bands can overlap; for example, VHF itself is the band of frequencies from 30 to 300 MHz.
Bandwidth
Bandwidth is the width of the band occupied by a particular signal. It varies significantly with the mode in use; an FT8 signal has a bandwidth of about 50 Hz, while an SSB signal is typically about 3,000 Hz (3 kHz). All else being equal, a signal with a narrower bandwidth will be received more strongly than a wider signal, but will not convey as much information in a given period of time.
Packet Radio
Packet radio is a digital system that creates computer networks using radio links. APRS is a popular use of packet radio.
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