The modern digital radio scanner is called "digital" because it is designed to be compatible with radio signals transmitted in digital mode rather than conventional analog mode. Most digital radio scanners still process the analog signals too. There has been no mandated changeover to digital radio like TV broadcasters recently experienced so both types of signals are in use.
Digital signals are less subject to interference and noise and deliver usable information better at the extremes of their range where analog signals become unpredictable. Digital signals can be encrypted easily while still being transmitted over the same frequency. Analog signal security usually involves changing frequencies rapidly within an agreed-upon range.
Non-encrypted digital signals meeting the APCO P-25 standard can be processed by digital radio scanners. Encrypted signals, cell-phone messages and portable radio digital signals are not processed by digital scanners. Digital radio scanners cannot be modified to process cell-phone messages. Prior to 1994 it was possible to buy scanners that could receive cell phone and cordless phone signals. Since that date an FCC rule has required ALL Scanners Sold in the USA to be Cellular frequency Deleted (Blocked).
FCC regulations do not prohibit the sale, ownership or use of digital radio scanners. Scanners must be FCC approved, of course. Some state and local governments have laws in effect limiting scanner use in vehicles or while committing a crime. Scanner regulations include a clause against scanned use to "break existing laws." Checking local rules is advised and the information presented is not legal advice.
There are many publicly available transmissions. Police and fire departments, some ham radio signals, news media vans and helicopters, sports officials, and racing team communications are just a few. Auto racing fans often use digital radio scanners to listen in on team communications.
Taking some time to understand the features will help you avoid paying for things you will never use. The many available brands and models of digital radio scanners offer a wide range of available features and prices. Personal research will pay off with a scanner you will be happy with.
Shopping for digital radio scanners should start with some research. The internet is the best public source of information about any subject - digital radio scanners are no exception. If you take some time to understand the many features available before shelling out your money your experience will be much better. Your do no want a tech-heavy unit that leaves you feeling lost. You certainly do not want to pay for features you will never use.
The close call feature will detect a transmission within a close distance (two hundred yards... Etc) and jump to that frequency even if it is not programmed for it.
Digital signals are less subject to interference and noise and deliver usable information better at the extremes of their range where analog signals become unpredictable. Digital signals can be encrypted easily while still being transmitted over the same frequency. Analog signal security usually involves changing frequencies rapidly within an agreed-upon range.
Non-encrypted digital signals meeting the APCO P-25 standard can be processed by digital radio scanners. Encrypted signals, cell-phone messages and portable radio digital signals are not processed by digital scanners. Digital radio scanners cannot be modified to process cell-phone messages. Prior to 1994 it was possible to buy scanners that could receive cell phone and cordless phone signals. Since that date an FCC rule has required ALL Scanners Sold in the USA to be Cellular frequency Deleted (Blocked).
FCC regulations do not prohibit the sale, ownership or use of digital radio scanners. Scanners must be FCC approved, of course. Some state and local governments have laws in effect limiting scanner use in vehicles or while committing a crime. Scanner regulations include a clause against scanned use to "break existing laws." Checking local rules is advised and the information presented is not legal advice.
There are many publicly available transmissions. Police and fire departments, some ham radio signals, news media vans and helicopters, sports officials, and racing team communications are just a few. Auto racing fans often use digital radio scanners to listen in on team communications.
Taking some time to understand the features will help you avoid paying for things you will never use. The many available brands and models of digital radio scanners offer a wide range of available features and prices. Personal research will pay off with a scanner you will be happy with.
Shopping for digital radio scanners should start with some research. The internet is the best public source of information about any subject - digital radio scanners are no exception. If you take some time to understand the many features available before shelling out your money your experience will be much better. Your do no want a tech-heavy unit that leaves you feeling lost. You certainly do not want to pay for features you will never use.
The close call feature will detect a transmission within a close distance (two hundred yards... Etc) and jump to that frequency even if it is not programmed for it.
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