Dishonest people, reporters and everyday folk are known to use the radio scanners to snoop in on broadcasts .Evesdropping to the broadcasts of the police services has been occuring for quite a while. The radio scanners used by them to eavesdrop are simply radio receivers capable of track loads of of frequencies which cannot be heard normally using everyday radio equipment.
There are many folk who use these radio scanners for fun, however some people use it with bad intentions such as tracking the activities of law enforcement to help in their wrong doings. Other than being used in law agencies these radio scanners are used for high frequency transmissions in big business and emergency services to keep their information secret. Seeing the rising number of break ins taking place in their transmission devices the corporations began to transmit it encrypted. This technology eventually opened up the market for mobile scanners as technology kept pace with the technological breakthroughs created by the corporations.
Project 25 is a group of standards for digital radio transmissions used by public safety agencies in the United States to aid them share information with each other.It's similar to European Tetra protocol although it is not linked to it in any level. The project was introduced after 9/11 .According to this protocol a spectrum of freqencies has to be reserved for the usage of law enforcement and emergency services. However this move was jeopardized by the emergence of digital radio scanners that made the broadcasts available to the public as good as the older scanners did with high frequency broadcasts. These portable radio scanners are available in lots of radio stores that sell electronic items and of course on the net.
Post 9/11 the US government decided to encrypt digital frequencies to stop the public from listening in using portable radio scanners. This opened up a lott of debate and plenty of liberal followers tried to keep the right of the public to snoop into the airwaves using their right to the information act .Their efforts were futile as government chose to encrypt their digital broadcasts. Many people tried to purchase mobile radio scanners which could decrypt the digital broadcasts but such devices were legally banned and yanked from the shelves.
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