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Mast radiators can also be built as free-standing lattice towers, wide at the bottom for stability, narrowing to a slender mast. [4] The advantage of this construction is the elimination of guy lines and thus reduction in land area required. These towers can have a triangular or a square cross section, with each leg supported on an insulator.
Replaced by four free-standing wooden lattice towers South Wellfleet, Cape Cod, Massachusetts, United States November 25, 1901: 20 wooden poles arranged in a circle 64 Storm Identical design to Poldhu installation. Replaced by 4 free-standing wooden lattice towers. Machrihanish, Scotland [1] December 5, 1906: Guyed steel tubular mast 128 Storm
The diamond-shaped tower was patented by Nicholas Gerten and Ralph Jenner for Blaw-Knox July 29, 1930. [5] and was one of the first mast radiators.[1] [6] Previous antennas for medium and longwave broadcasting usually consisted of wires strung between masts, but in the Blaw-Knox antenna, as in modern AM broadcasting mast radiators, the metal mast structure functioned as the antenna. [1]
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.
Mont Agel Broadcasting Mast 1946 France Fontbonne 145 m originally mast radiator with lattice tower as basement, today used for FM-/TV-broadcasting [6] Waldenburg TV Tower? Germany: Waldenburg 145 m antenna mast dismantled in 2009 Mekhzavod Radio Mast ? Russia Mekhzavod 142 m Mast radiator on small lattice tower [7] Sendeturm Jauerling: 1958 ...
The antenna mast was mounted directly to the Zil transport truck, previous radar like the P-8 had a free standing mast, the advantage of the P-10 mast was that it could be deployed and stowed much faster than before, improving the mobility of the radar.
A guyed radio mast. A guyed mast is a tall thin vertical structure that depends on guy lines (diagonal tensioned cables attached to the ground or a base) for stability. The mast itself has the compressive strength to support its own weight, but does not have the shear strength to stand unsupported or bear loads.
The mast is resonant at the lengths where the reactance goes to zero. In an ideal thin monopole antenna these would be at a length of 0.25 λ {\displaystyle 0.25\lambda } anf 0.5 λ {\displaystyle 0.5\lambda } . but in actual mast radiators as shown here the thickness of the mast, and capacitance of guy wires and the base insulator causes ...