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Glossary
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Amplitude Modulation (AM)
A modulation technique that varies the power output of a transmitter in accordance with the variations in the modulating audio signal.
A modulation technique that varies the power output of a transmitter in accordance with the variations in the modulating audio signal.
Balun
A device used with to match an unbalanced feed-line, like coaxial cable, to a balanced antenna, like a dipole.
A device used with to match an unbalanced feed-line, like coaxial cable, to a balanced antenna, like a dipole.
Band
A range of frequencies
A range of frequencies
Beat Frequency Oscillator (BFO)
A receiver circuit that generates a replacement carrier to enable intelligible reception of CW, FSK, and SSB signals.
A receiver circuit that generates a replacement carrier to enable intelligible reception of CW, FSK, and SSB signals.
Continuous Wave (CW)
The constant output of a radio transmitter that can be periodically interrupted to send messages by Morse code.
The constant output of a radio transmitter that can be periodically interrupted to send messages by Morse code.
DXing
Listening to distant stations (D=distant, X=transmitter)
Listening to distant stations (D=distant, X=transmitter)
Frequencies
A band is a group of frequencies. Sometimes, bands are grouped according to their wavelengths, in meters. The tuning locations of a station can be expressed as a frequency (kHz or MHz) or a wavelength (meters). Amateur radio operators generally refer to the frequencies they operate on by using the frequency's wavelength. For example, the 19-meter band refers to the range of frequencies with waves about 19 meters long.
A band is a group of frequencies. Sometimes, bands are grouped according to their wavelengths, in meters. The tuning locations of a station can be expressed as a frequency (kHz or MHz) or a wavelength (meters). Amateur radio operators generally refer to the frequencies they operate on by using the frequency's wavelength. For example, the 19-meter band refers to the range of frequencies with waves about 19 meters long.
Frequency Steps
Lets you set the frequency increment for tuning or scanning.
Lets you set the frequency increment for tuning or scanning.
Longwave (LW)
Radio signals 300 kHz and lower in frequency, although this term is often used to mean any radio signal lower than 540 kHz.
Radio signals 300 kHz and lower in frequency, although this term is often used to mean any radio signal lower than 540 kHz.
Lower SideBand (LSB)
The sideband lower in frequency than the transmitter’s carrier.
The sideband lower in frequency than the transmitter’s carrier.
Medium Wave (MW)
Radio signals from 300 to 3000 kHz, although this term is often used to mean any radio signal in the AM broadcast band (540 to 1700 kHz).
Radio signals from 300 to 3000 kHz, although this term is often used to mean any radio signal in the AM broadcast band (540 to 1700 kHz).
Shortwave (SW)
Frequencies between 1.7 MHz (1700 kHz) and 30 MHz
Frequencies between 1.7 MHz (1700 kHz) and 30 MHz
Sideband
A signal equal to the bandwidth of the modulating frequency found above and below the carrier frequency in an AM signal.
A signal equal to the bandwidth of the modulating frequency found above and below the carrier frequency in an AM signal.
Single SideBand (SSB)
A modulation technique that suppresses one sideband and the carrier and transmits only the remaining sideband.
A modulation technique that suppresses one sideband and the carrier and transmits only the remaining sideband.
Ultra High Frequencies (UHF)
The frequency range from 300 to 3000 MHz.
The frequency range from 300 to 3000 MHz.
Upper SideBand (USB)
The sideband higher in frequency than the transmitter’s carrier.
The sideband higher in frequency than the transmitter’s carrier.
Very High Frequencies (VHF)
The frequency range from 30 to 300 MHz.
The frequency range from 30 to 300 MHz.
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