transmitting wave
21seismic wave — Vibration generated by an earthquake, explosion, or similar phenomenon and propagated within the Earth or along its surface. Earthquakes generate two principal types of waves: body waves, which travel within the Earth, and surface waves, which… …
22ground wave — noun a radio wave propagated on or near the earth s surface • Hypernyms: ↑radio wave, ↑radio emission, ↑radio radiation * * * noun : a radio wave that is propagated along the surface of the earth * * * a radio wave that propagates on or near the… …
23direct wave — An electromagnetic wave that travels directly from a transmitting antenna to the receiving antenna along a straight line. Direct waves are responsible for part, but not all, of the signal propagation between two antennae when a sight line… …
24Ground Wave Emergency Network — The Ground Wave Emergency Network (GWEN) was a command and control communications system intended for use by the United States government to facilitate military communications during a nuclear war. The network was implemented as an array of… …
25Zeesen short-wave transmitter (1931) — The Zeesen short wave transmitter was a 70 metre high shortwave radio transmission mast constructed at Zeesen in Germany in 1931. Consisting of a lattice tower of pitch pine timbers, it was one of Germany s first short wave broadcasting… …
26Lisnagarvey transmitting station — The Lisnagarvey transmitting station is a facility for mediumwave broadcasting located on the south western edge of the town of Lisburn, Northern Ireland (grid reference J258919). The station was built by the BBC for the Regional Programme to be… …
27sound wave — n 1) SOUND (1) 2) sound waves pl longitudinal pressure waves esp. when transmitting audible sound …
28continuous wave Doppler ultrasonography — Doppler ultrasonography using two transducers, with one continually transmitting and the other continually recording the ultrasonic waves. It is used to record signals with very high velocities, such as occur in severely stenotic valves, but… …
29pure wave — noun : a radio wave produced by a transmitting set that is substantially free from harmonics or any frequency except the fundamental …
30Antenna (radio) — Whip antenna on car …
