Ads
related to: bayco 16 ft aluminum telescopic pole base stationuline.com has been visited by 1M+ users in the past month
Search results
Results From The WOW.Com Content Network
Amundsen–Scott South Pole Station: 26–36 GHz 13-element interferometer measuring anisotropies in the cosmic microwave background. [8] South Pole Telescope (SPT) Amundsen–Scott South Pole Station: 95–350 GHz 10-m microwave telescope making observations of clusters using the Sunyaev-Zeldovich effect. [9]
The first, a 665 foot (203 m) half-wave mast was installed at radio station WABC's 50 kW transmitter at Wayne, New Jersey in 1931. [ 4 ] [ 5 ] During the 1930s it was found that the diamond shape of the Blaw-Knox tower had an unfavorable current distribution which increased the power emitted at high angles, causing multipath fading in the ...
John Hans Uelses (born Hans Joachim Feigenbaum; July 14, 1937 – December 15, 2022) was an American pole vaulter.He made history by becoming the first man to vault over 16 feet – on February 2, 1962, at the Millrose Games in New York's Madison Square Garden, before a sold-out crowd, Uelses soared over the bar at 16' 1/4", making headlines around the world.
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.
Base feed: Radio frequency power is fed to the mast by a wire attached to it, which comes from a matching network inside the "antenna tuning hut" at right. The brown ceramic insulator at the base keeps the mast electrically insulated from the ground. On the left there is an earthing switch and a spark gap for lightning protection.
It is constructed of two telescoping rods attached to a base, which extend out to about 1 m (3.3 feet) length (approximately one-quarter wavelength at 54 MHz) and can be collapsed when not in use. For best reception, the rods should be adjusted to be a little less than 1 / 4 wavelength at the frequency of the television channel being ...