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2. Radio masts and towers - Wikipedia

   en.wikipedia.org/wiki/Radio_masts_and_towers

   The antenna used for broadcasting through the 1920s was the T-antenna, which consisted of two masts with loading wires on top, strung between them, requiring twice the construction costs and land area of a single mast. [2] (pp 77–78) In 1924 Stuart Ballantine published two historic papers which led to the development of the single mast antenna.

3. 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 ...

4. Monopole antenna - Wikipedia

   en.wikipedia.org/wiki/Monopole_antenna

   Showing that due to its reflection (b), the monopole antenna (a) has the same radiation pattern over perfect ground as a dipole in free space (c) with the same current but twice the voltage Vertical radiation patterns of three common length monopole mast radiator antennas over perfect ground. The distance of the line from the origin at a given ...

5. Antenna types - Wikipedia

   en.wikipedia.org/wiki/Antenna_types

   An umbrella antenna consists of a central radiating tower with multiple wires attached at the top as a "capacitance hat", that extend out radially from the mast and are insulated at their ends; the overhead configuration resembles an open metal umbrella frame, hence the name "umbrella" antenna.

6. 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.

7. Guyed mast - Wikipedia

   en.wikipedia.org/wiki/Guyed_mast

   Guyed masts are frequently used for radio masts and towers. The mast can either support radio antennas (for VHF, UHF and other microwave bands) mounted at its top, or the entire structure itself can function as a mast radiator antenna (for VLF, LF, MF). In the latter case, the mast needs to be insulated from the ground. Guyed radio masts are ...

8. KVLY-TV mast - Wikipedia

   en.wikipedia.org/wiki/KVLY-TV_mast

   The KVLY-TV mast (formerly the KTHI-TV mast) is a television-transmitting mast in Blanchard, North Dakota. It is used by Fargo station KVLY-TV (channel 11) and KXJB-LD 's Argusville / Valley City / Mayville translator K28MA-D (channel 28), along with KNGF (channel 27).

9. List of catastrophic collapses of broadcast masts and towers

   en.wikipedia.org/wiki/List_of_catastrophic...

   Tallest ever mast aboard any ship. It was replaced by horizontal wire antenna between two shorter masts. KTUL Tower Coweta, OK: December 26, 1987: Lattice steel guyed tower 582 Ice storm Listed at 1909 feet a mast in NRTA Transmitting Station 501, Anning, Kunming, Yunnan, China: January 1988: Guyed steel lattice mast 143.5 Material fault and ...