elevated antenna
11Invention of radio — Great Radio Controversy redirects here. For the album by the band Tesla, see The Great Radio Controversy. Contents 1 Physics of wireless signalling 2 Theory of electromagnetism …
12PAVE PAWS — Coverage of PAVE PAWS is shown in blue. This complements the coverage provided by the BMEWS system in red. Both report back to Cheyenne Mountain Air Base in Colorado …
13World Trade Center — For other uses, see World Trade Center (disambiguation). World Trade Center[1] …
14MIM-104 Patriot — Patriot system of the German Luftwaffe Type Mobile Surface to air missile system Place of …
15BTR-50 — Infobox Weapon name=BTR 50 caption=Ex Syrian or ex Egyptian BTR 50PK APC in Yad la Shiryon Museum, Israel. 2005. origin=USSR type=Amphibious Tracked Armoured Personnel Carrier is vehicle=yes service=1954 present used by=See Operators. wars=See… …
16BMP-1 variants — This is a complete list of variants and designations of the BMP 1 infantry fighting vehicle. It is sorted by country of origin. Variants Former USSRInfantry fighting vehicles* BMP (Ob yekt 764) Original main prototype of BMP 1 developed by the… …
17FUG — D 442 FUG/D 944 PSzH Polish D 442 FUG at a museum, 01.07.2007. Type Amphibious Armoured Scout Car Place of origin …
18VHF omnidirectional range — This article is about the radio navigation aid. For other uses, see Vor. D VOR (Doppler VOR) ground station, co located with DME …
19Magnetic loop — antennas (also known as Small Transmitting/Receiving Loops) have a small antenna size compared to other antennas for the same wavelength. A magnetic loop is one in which the current amplitude is constant round the circumference, and it is… …
20Lightning rod — A lightning rod (USA) or lightning conductor (UK) is a single component in a lightning protection system. In addition to rods placed at regular intervals on the highest portions of a structure, a lightning protection system typically includes a… …
