Glossary-2
Spectrum Frequency range within which radiation has specific characteristics.
Squelch Muting of audio circuits when received signal levels fall below a pre-
determined value. With carrier squelch, all channel activity that exceeds
the radio’s preset squelch level can be heard.
Transceiver Transmitter-receiver. A device that both transmits and receives digital
signals. Also abbreviated as XCVR.
Transmitter Electronic equipment that generates and amplifies an RF carrier signal,
modulates the signal, and then radiates it into space.
TX Transmit.
UHF Ultra-High Frequency.
USB Universal Serial Bus: An external bus standard that supports data
transfer rates of 12 Mbps.
Term Definition
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