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2. TV Ears - Wikipedia

   en.wikipedia.org/wiki/Tv_ears

   Usually battery operated, the wireless headphone system uses digital frequency to operate. Unlike TV Ears, transmitters for wireless headphone systems are typically capable of projecting audio waves to several different headsets at one time. Wireless systems are good for up to 20 meters and for advanced music and in-home movie-watching experiences.

3. Wireless telegraphy - Wikipedia

   en.wikipedia.org/wiki/Wireless_telegraphy

   Wireless telegraphy. A US Army Signal Corps radio operator in 1943 in New Guinea transmitting by radiotelegraphy. Wireless telegraphy or radiotelegraphy is transmission of text messages by radio waves, analogous to electrical telegraphy using cables. [1] [2] Before about 1910, the term wireless telegraphy was also used for other experimental ...

4. List of Bluetooth profiles - Wikipedia

   en.wikipedia.org/wiki/List_of_Bluetooth_profiles

   Human Interface Device Profile (HID) [ edit] Provides support for HID devices such as mice, joysticks, keyboards, and simple buttons and indicators on other types of devices. It is designed to provide a low latency link, with low power requirements. PlayStation 3 controllers and Wii remotes also use Bluetooth HID.

5. Television antenna - Wikipedia

   en.wikipedia.org/wiki/Television_antenna

   A single transmitter location may transmit signals for several channels. CABD (communal antenna broadcast distribution) is a system installed inside a building to receive free-to-air TV/FM signals transmitted via radio frequencies and distribute them to the audience.

6. Digital television transition in the United States - Wikipedia

   en.wikipedia.org/wiki/Digital_television...

   Transition testing Wilmington, North Carolina test market. As part of a test by the FCC to iron out transition and reception concerns before the nationwide shutoff, all of the major commercial network stations in the Wilmington, North Carolina market ceased transmission of their analog signals on September 8, 2008, making it the first market in the nation to go digital-only.

7. Distributed transmission system - Wikipedia

   en.wikipedia.org/.../Distributed_transmission_system

   Distributed transmission system. In North American digital terrestrial television broadcasting, a distributed transmission system ( DTS or DTx) is a form of single-frequency network in which a single broadcast signal is fed via microwave, landline, or communications satellite to multiple synchronised terrestrial radio transmitter sites. The ...