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A mast radiator or mast antenna is a radio tower or mast in which the whole structure is an antenna. Mast antennas are the transmitting antennas typical for long or medium wave broadcasting. Structurally, the only difference is that some mast radiators require the mast base to be insulated from the ground.
This subsection could also be named "phased arrays", a type of composite directional antenna where the various component simple antennas are laid out a large fraction of a wavelength apart, with each antenna's feedline's phase individually shifted, so that the signal from a radio wave moving in some selected direction across the layout of the ...
In transmission, a radio transmitter supplies an electric current to the antenna's terminals, and the antenna radiates the energy from the current as electromagnetic waves (radio waves). In reception , an antenna intercepts some of the power of a radio wave in order to produce an electric current at its terminals, that is applied to a receiver ...
The name of the magazine is derived from the radio call sign prefix block assigned to South Africa by the International Telecommunication Union. Most South African amateur radio operators have call signs that begin with the letters ZS. [4] The other call sign prefixes are ZR, ZT and ZU.
Bonnie Crystal was granted the US patent 7,151,497 Coaxial Antenna System on December 19, 2006, after filing in 2003 for new types of coaxial antennas with reduced size providing efficient broadband, wideband and controlled bandwidths, using radiation by the outside of the coaxial elements.
Radio frequency antenna types (2 C, 110 P) Pages in category "Antennas (radio)" The following 176 pages are in this category, out of 176 total.
This is a list of radio stations in South Africa. M Note: The list of commercial stations tends to be more stable, with few additions or removals. The list of community stations tends to change quite a bit, with many changes over time (mainly due to funding issues).
[[Category:South Africa radio navigational boxes]] to the <includeonly> section at the bottom of that page. Otherwise, add <noinclude>[[Category:South Africa radio navigational boxes]]</noinclude> to the end of the template code, making sure it starts on the same line as the code's last character.