The radio can be set to stay on this frequency until the transmission ends or it can be programmed to stay on this frequency for a predetermined amount of time. As the radio scans through its preprogrammed frequencies it will stop on a frequency with a signal stronger than the minimum squelch setting. This squelch is set to tune out any natural background radio noise. These radio scanners are equipped with a squelch which is a device that can be set to suppress the audio output of the receiver if the received signal is not strong enough.
Once a radio scanner has a set of different frequencies programmed into some or all of its memory channels and set to scan, it will listen momentarily to each of these channels in turn in ascending order of channel number. The more expensive scanners cover a wider range of frequencies, have a lot of memory channels and scan through these channels very quickly. Depending on the price, these scanning radios offer different features and capabilities. The radio scanner can also be programmed to scan or search between two given frequencies in predetermined steps.
A radio scanner is a radio receiver which is capable of scanning through a number of preprogrammed channels or frequencies.
Once a radio scanner has a set of different frequencies programmed into some or all of its memory channels and set to scan, it will listen momentarily to each of these channels in turn in ascending order of channel number. The more expensive scanners cover a wider range of frequencies, have a lot of memory channels and scan through these channels very quickly. Depending on the price, these scanning radios offer different features and capabilities. The radio scanner can also be programmed to scan or search between two given frequencies in predetermined steps.
A radio scanner is a radio receiver which is capable of scanning through a number of preprogrammed channels or frequencies.
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