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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.
Common types of monopole antenna are the whip, rubber ducky, umbrella, inverted-L and T-antenna, inverted-F, folded unipole antenna, mast radiator, and ground plane antennas. The monopole is usually used as a resonant antenna; the rod functions as an open resonator for radio waves, oscillating with standing waves of voltage and current along ...
It is shaped like the Greek letter Π or an upside-down capital letter U, and is the loop antenna analog of a ground-mounted monopole antenna. Similar to how a vertical monopole uses its ground system to produce a "phantom" image of the rest of a dipole, the missing lower half of the half-loop is replaced by its image in the ground-plane. If ...
Located in the Rising Sun region of the park, it includes a rustic general store, [14] built in 1941 by the Glacier Park Hotel Company, surrounded by a number of log tourist cabins., [15] as well as a shower and laundry house and other supporting structures.
Yagi antenna for UHF TV reception with 22 parasitic elements; 4 reflectors attached to the vertical bracket at left, and 18 directors attached to the horizontal beam at right. The driven element is attached to the black box next to the reflectors. The antenna is most sensitive to radio waves coming from the right, parallel to the antenna's axis.
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The Great Northern also built service areas just outside the boundaries of the park. The Belton Chalets, built in 1910-11, were among the first buildings the company built for this effort, and were located at what was then the main station for accessing the park. The Glacier Park Lodge was built in 1913 to serve visitors approaching from the east.
The Belton Chalets are a group of historic hotel buildings in the village of West Glacier, Montana, near the western entrance to Glacier National Park.The chalet buildings were built in 1910-11 by the Great Northern Railway (GN) as the first component of the railroad's ambitious program of hotel, road, and trail construction in Glacier.