line-of-sight transmission

line-of-sight transmission

Epidemiology A mode of 'transmission' of a pseudoepidemic, in which those afflicted are within view of others similarly affected. See Mass sociogenic illness, Pseudoepidemic.
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Equipped with 14dBi gain, the S-4900 is compatible with SWIT Electronics' S-4904 and S4914 transmitters, and is capable of achieving 1km line-of-sight transmission distance.
While traditional microwave networks require substantial equipment and infrastructure due to the line-of-sight transmission requirement, he said TVWS could traverse rugged terrain, foliage and other barriers with minimal requirements.
This topology corresponds to Line-of-Sight transmission in wireless channels.
Using line-of-sight transmission and a two-step activation process, the system is immune to interference or accidental activation from stray radio frequency interference in a typical plant environment.
The system is actually a Raytheon software-definable radio that features Have Quick I/II, fixed-frequency and frequency-hopping Sincgars, Melp and enhanced Melp vocoders, Jstars interoperable waveforms, GPS 1 PPS and 800 kHz clock inputs, Dama-181B, -182A, -183 and -183A, Satcom and line-of-sight transmission and modulates via AM, FM/FSK, SBPSK, DEQPSK, CPM, ECCM and SOQPSK (to name a few features).
According to the company, the XBee-PRO ZNet 2.5 provides up to 1 mile (1.6km) RF line-of-sight transmission, in this way increasing the number of applications in which ZigBee mesh networking can be used.
CAISI provides 11 megabytes of wireless line-of-sight transmission, encryption on all wireless local area network links, and a 2-megabyte Digital Subscriber Line backup capability for non-line-of-sight requirements within a 4-mile distance.
CAISI, with 11Mb wireless line-of-sight transmission, encryption on all wireless LAN links and 2Mb Digital-Subscriber Line backup capability for non-LOS requirements within a four mile distance, extends tactical connectivity capability from the theater level to the Brigade Support Area, and is providing traditionally-lacking communications for combat service support missions such as supply chain management, maintenance and business systems.
Steep canyons and tall pine trees made burying cable or installing line-of-sight transmission equipment difficult.
Typically they employ infrared light, which requires line-of-sight transmission and user-initiated commands to function properly.
Radio-frequency headphones and speakers aren't limited to line-of-sight transmission. Their transmitters essentially broadcast the audio signal to the headphones or speakers.
Repeaters might be necessary--depending on the terrain and the need to achieve line-of-sight transmission. An antenna, radio receiver and modem at the control center captures data and sends it to a personal computer where an interface board and custom software complete the link and allow for on-line monitoring of pit power.