Overview Of The Mobile Radio Scanner
The scanners are designed to meet the specific needs of the individual who use them. When a person is caught in a snowstorm with no means of getting help, the use of an emergency beacon will alert emergency services to one's location quickly. If a person wants to use their scanner in their car and home, it can easily be adapted to act as a home base unit.
When in a vehicle the average mobile radio scanner will pick up transmissions up to forty miles away. The range of the receiver is based on the size and type of antenna that is being sued. Some people use a glass mounted antenna which is permanently attached to a vehicle's glass. Some of these antennas are placed on the sun roof of a car. Other times the antenna will be installed on the rear glass of the vehicle. These antennas are not grounded to the vehicle and their range is more limited than a magnetic mounted antenna.
Glass mounted antennas are permanently attached to the glass on a vehicle. Some people use these antennas on their sun roofs. Other individuals place the antenna on the back window. Some of these antennas can be removed from the base unit. But most are permanent fixtures on the vehicle once they are installed.
Depending on the scanner selected, a mobile radio scanner is capable of monitoring hundreds of channels between 30Mhz and 3Ghz. VHF monitoring falls within 30Mhz and 300Mhz, This frequency is used primarily by the military, police, air traffic controllers, etc. The VHF to UHF is between 300Mhz and 3Ghz and is used by public service agencies with their two-way radios.
The scanners store thousands of channels and can scan hundreds of frequencies per second. Some of the scanners can follow trunked systems and the APCO-Project 25 digital radio frequencies used by federal, state, and local public agencies. Since the increase in terrorism and need for more secure communication, a mobile radio scanner cannot receive encrypted transmissions legally.
There are many times when the mobile radio scanner that one selects will provide security. This is especially true of individuals who travel a lot or live in areas with severe climate changes. Having a mobile scanner that can receive important information when one is traveling, or emit an emergency beacon when a person is stranded is of enormous benefit to most people.
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