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Twin lead cable is a two-conductor flat cable used as a balanced transmission line to carry radio frequency (RF) signals. It is constructed of two, stranded copper wires, or solid copper-clad steel wires. The wires are held a fixed distance apart by a plastic ribbon that is a good insulator at radio frequencies (usually polyethylene).
Earlier antennas used a flat cable called 300 ohm twin-lead. The standard today is 75 ohm coaxial cable , which is less susceptible to interference which plugs into an F connector or Belling-Lee connector (depending on region) on the back of the TV. [ 6 ]
Upper section of antenna broke loose and destroyed guy wires due to ice storm WAND and WJJY used the same RCA UHF antennas, mfg in 1969. TV channel 17 (488-494 MHz) Collapsed Easter Sunday. Nebraska Education Tower, Angora: February 1978: Guyed steel lattice mast 457 Ice Zehlendorf bei Oranienburg, East Germany May 21, 1978: Guyed steel lattice ...
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.
[aa] The simple antennas used to make a Yagi-Uda can either all be linear or bent linear antennas, or all loops (a quad antenna) or (rarely) a mixed combination of loops and straight-wire antennas. Yagi–Udas are used for rooftop television antennas , point-to-point communication links, and long distance shortwave communication using skywave ...
A transmatch (antenna tuner) is not required to use this antenna near its nominal design frequency of 14 MHz, and judicious length adjustments can sometimes include one other frequency band. All other frequencies require a transmatch. [citation needed] There are many variants of the G5RV antenna. Two variations of the G5RV design, called ZS6BKW ...
2 Shielded twin-lead? 1 comment. 3 Merge. 2 comments. 4 Table of loss at the end of the article is not very helpful. 3 comments. 5 Bad introduction quiz. Toggle the ...
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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