primary antenna array
21Power dividers and directional couplers — A 10 dB 1.7–2.2 GHz directional coupler. From left to right: input, coupled, isolated (terminated with a load), and transmitted port …
22Cognitive radio — A cognitive radio is a kind of two way radio that automatically changes its transmission or reception parameters, in a way where the entire wireless communication network of which it is a node communicates efficiently, while avoiding interference …
23Instrument landing system — The Instrument Landing System (ILS) is a ground based instrument approach system that provides precision guidance to an aircraft approaching a runway, using a combination of radio signals and, in many cases, high intensity lighting arrays to… …
24Signals 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… …
25Diego Garcia — For other uses, see Diego Garcia (disambiguation). Diego Garcia IATA: NKW – ICAO: FJDG Summary …
26Voyager 1 — This article is about the spacecraft. For the album by The Verve, see Voyager 1 (album). For fictional Voyager One from Space: 1999, see Voyager One (Space: 1999). Voyager 1 Voyager …
27LORAN — (LOng Range Aid to Navigation) is a terrestrial radio navigation system using low frequency radio transmitters that uses multiple transmitters (multilateration) to determine location and/or speed of the receiver. The current version of LORAN in… …
28Type 348 Radar — The Type 346 radar is a new APAR style active phased array radar, used on the Chinese People s Liberation Army Navy s latest Lanzhou class Destroyer (052C). The radar is used in conjunction with the HQ 9 SAM to provide long range air defense… …
29Messerschmitt Me 262 — Me 262 Schwalbe Messerschmitt Me 262A Role …
30Alec Trevelyan — James Bond Character bgcolor=#000 fgcolor=#fff name=Alec Trevelyan gender=Male occupation=Head of Janus (Former MI6 operative) affiliation=Janus status=Deceased role= Villain portrayed=Sean BeanAlexander Alec Trevelyan (006) is a fictional… …
