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2. Radio masts and towers - Wikipedia

   en.wikipedia.org/wiki/Radio_masts_and_towers

   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.

3. Mast radiator - Wikipedia

   en.wikipedia.org/wiki/Mast_radiator

   Base-fed mast radiators have a high voltage on the base of the mast, which can deliver a dangerous electric shock to a grounded person touching it. The potential on the mast is typically several thousand volts with respect to the ground. Electrical codes require such exposed high voltage equipment to be fenced off from the public, so the mast ...

4. Counterpoise (ground system) - Wikipedia

   en.wikipedia.org/wiki/Counterpoise_(ground_system)

   Counterpoises are typically used in antenna systems for radio transmitters where a good earth ground connection cannot be constructed.. Monopole antennas used at low frequencies, below 3 MHz, such as the mast radiator antennas used for AM broadcasting, require the radio transmitter to be electrically connected to the Earth under the antenna; this is called a ground (or earth).

5. Monopole antenna - Wikipedia

   en.wikipedia.org/wiki/Monopole_antenna

   For monopole antennas operating at lower frequencies, below 20 MHz, the ground plane is usually the Earth; in this case the antenna is a vertical mast mounted on the ground on an insulator to isolate it electrically from the ground. One side of the feedline is connected to the mast and the other to an Earth ground at the base of the antenna. In ...

6. Antenna types - Wikipedia

   en.wikipedia.org/wiki/Antenna_types

   Ground plane A whip antenna with several rods extending horizontally from base of the whip in a star-shaped pattern, similar to an upside-down radiate crown, that form the artificial, elevated ground plane that gives the antenna its name. The ground plane rods attach to the ground wire of the feedline, the other wire feeds the whip.

7. Folded unipole antenna - Wikipedia

   en.wikipedia.org/wiki/Folded_unipole_antenna

   The folded unipole antenna is a type of monopole mast radiator antenna used as a transmitting antenna mainly in the medium wave band for AM radio broadcasting stations. It consists of a vertical metal rod or mast mounted over and connected at its base to a grounding system consisting of buried wires. The mast is surrounded by a "skirt" of ...