narrowband$520052$ - определение. Что такое narrowband$520052$
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Что (кто) такое narrowband$520052$ - определение

NBTV; Narrow bandwidth television; Narrowband television; Narrow Band Television

ANDVT         
SECURE VOICE TERMINAL
ANVDT; Advanced Narrowband Digital Voice Terminal
The Advanced Narrowband Digital Voice Terminal (ANDVT) is a secure voice terminal for low bandwidth secure voice communications throughout the U.S.
Ultra Narrowband         
In communication engineering, Ultra NarrowBand (UNB) systems are those in which the channel has a very narrow bandwidth. Thethingsnetwork.
narrowband         
CONCEPT IN RADIO COMMUNICATIONS
Narrow-band
<networking> A communication channel with a low data rate. [More specific?] The term is sometimes used for an Internet connection via a dial-up modem, typically at 56 kbaud, in contrast to broadband. (2003-10-15)

Википедия

Narrow-bandwidth television

Narrow-bandwidth television (NBTV) is a type of television designed to fit into a channel narrower than the standard bandwidth used for official television standards.

The three predominant worldwide broadcast television standards use either 6 MHz wide channels (as in the Americas and Japan, as ATSC and ISDB-T both use those standards) or 8 MHz (as in most of Europe with DVB-T). Narrow-bandwidth television refers to any method that reduces the bandwidth below that threshold. (These techniques are frequently used in traditional television to allow for multiple digital subchannels on the same bandwidth, but this is not true narrow-bandwidth as the standards do not allow for it, and the extra bandwidth in these cases is usually transferred to another channel.)