encrypted signal
81Token (railway signalling) — A token being offered by a signalman on the Keighley and Worth Valley Railway …
82Satellite Internet access — Satellite Internet services are used in locations where terrestrial Internet access is not available and in locations which move frequently. Internet access via satellite is available worldwide, including vessels at sea and mobile land… …
83Burglar alarm — Silent alarm redirects here. For the album, see Silent Alarm (album). Burglar (or intrusion), fire and safety alarms are all electronic today. Sensors are connected to a control unit via a low voltage hardwire or narrowband RF signal which is… …
84Secondary surveillance radar — SSR antenna of Deutsche Flugsicherung at Neubrandenburg, in Mecklenburg/Western Pomerania Secondary surveillance radar (SSR)[1] is a radar system used in air traffic control (ATC), that not only detects an …
85Signals intelligence operational platforms by nation — This article is a subset article under the main article Signals intelligence, which addresses the unifying conceptual and technical factors and common technologies in this intelligence discipline. This article deals with current signals… …
86Multichannel code — With the popularization of digital audio there is a Growing demand for compression and transmission techniques. The use of perceptual coding (based on psicoacustic model) has been a major breakthrough in Regarding the compressión digital audio.… …
87Digital television — List of digital television broadcast standards DVB standards (Europe) DVB S (satellite) DVB S2 DVB T (terrestrial) DVB T2 DVB …
88Deep packet inspection — (DPI) (also called complete packet inspection and Information eXtraction IX ) is a form of computer network packet filtering that examines the data part (and possibly also the header) of a packet as it passes an inspection point, searching for… …
89Alias episodes (season 4) — NOTOC Authorized Personnel Only: Part 1 Original airdate: January 5, 2005 *Directed by: Ken Olin *Written by: J.J. Abrams, Jeff MelvoinThe show opens with a flashback from a scene of Sydney in hand to hand combat on a moving train. We learn that… …
90WYBE — This article is for the television station in Philadelphia. For the television station in Pinehurst, North Carolina, see WYBE CA. WYBE Philadelphia, Pennsylvania Branding MiND: Media Independence Channels Digital: 35 (UHF) …
