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2. Radio scanner - Wikipedia

   en.wikipedia.org/wiki/Radio_scanner

   A scanner (also referred to as a radio scanner) is a radio receiver that can automatically tune, or scan, two or more discrete frequencies, stopping when it finds a signal on one of them and then continuing to scan other frequencies when the initial transmission ceases. The term scanner generally refers to a communications receiver that is ...

3. List of radio stations in New Hampshire - Wikipedia

   en.wikipedia.org/wiki/List_of_radio_stations_in...

   The following is a list of FCC-licensed radio stations in the U.S. state of New Hampshire, which can be sorted by their call signs, frequencies, cities of license, licensees, and programming formats. List of radio stations

4. Radio-frequency identification - Wikipedia

   en.wikipedia.org/wiki/Radio-frequency_identification

   Radio-frequency identification ( RFID) uses electromagnetic fields to automatically identify and track tags attached to objects. An RFID system consists of a tiny radio transponder called a tag, a radio receiver, and a transmitter. When triggered by an electromagnetic interrogation pulse from a nearby RFID reader device, the tag transmits ...

5. Trunked radio system - Wikipedia

   en.wikipedia.org/wiki/Trunked_radio_system

   A trunked radio system is a two-way radio system that uses a control channel to automatically assign frequency channels to groups of user radios. In a traditional half-duplex land mobile radio system a group of users (a talkgroup) with mobile and portable two-way radios communicate over a single shared radio channel, with one user at a time ...

6. Let the city listen: The NYPD should keep police radio ...

   www.aol.com/let-city-listen-nypd-keep-080000195.html

   The NYPD has begun encrypting scanner radios that the press and the public have used to monitor basic police communications for more than 90 years. While the desire to put such communications on ...

7. List of radio stations in Massachusetts - Wikipedia

   en.wikipedia.org/wiki/List_of_radio_stations_in...

   The following is a list of the FCC-licensed radio stations in the United States Commonwealth of Massachusetts, which can be sorted by their call signs, frequencies, cities of license, licensees, and programming formats.