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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. Naval Radio Transmitter Facility Aguada - Wikipedia

   en.wikipedia.org/wiki/Naval_Radio_Transmitter...

   Naval Radio Transmitter Facility Aguada is a tall guyed radio mast erected by the United States Navy. It is used as a facility of the US Navy for ashore and U.S. and NATO ships, planes, and submarines operating at sea in areas of broadcast coverage near Aguada, Puerto Rico at 18°23′55″N 67°10′38″W  /  18.39861°N 67.17722°W ...

4. Antenna types - Wikipedia

   en.wikipedia.org/wiki/Antenna_types

   A horn antenna has a flaring metal horn attached to a waveguide. It is a simple antenna with moderate gain of 15 to 25 dBi, used for applications such as radar guns, radiometers, and as feed antennas for parabolic dishes. Slot Consists of a waveguide with one or more slots cut in it to emit the microwaves. Linear slot antennas emit narrow fan ...

5. Inverted vee antenna - Wikipedia

   en.wikipedia.org/wiki/Inverted_vee_antenna

   An inverted vee antenna is a type of antenna similar to a horizontal dipole, but with the two sides bent down towards the ground, typically creating a 120- or 90-degree angle between the dipole legs. It is typically used in areas of limited space as it can significantly reduce the ground foot print of the antenna without significantly impacting ...

6. Project Sanguine - Wikipedia

   en.wikipedia.org/wiki/Project_Sanguine

   The ends of the transmission lines were grounded by 1 to 3 miles (1.6 to 4.8 km) of buried copper cable and ground rods, [2] later replaced by arrays of electrodes in deep 300-foot (91 m) boreholes [1] The transmitters sent alternating currents of 300 amperes through the lines, which passed through the buried electrodes deep into the Earth.

7. Mast radiator - Wikipedia

   en.wikipedia.org/wiki/Mast_radiator

   By 1930 the disadvantages of the T antenna led broadcasters to adopt the mast radiator antenna. [9] One of the first types used was the diamond cantilever or Blaw-Knox tower. This had a diamond (rhombohedral) shape which made it rigid, so only one set of guy lines was needed, at its wide waist. The pointed lower end of the antenna ended in a ...