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2. Reflective array antenna - Wikipedia

   en.wikipedia.org/wiki/Reflective_array_antenna

   Reflective array 'billboard' antenna of the SCR-270 radar, an early US Army radar system. It consists of 32 horizontal half wave dipoles mounted in front of a 17 m (55 ft) high screen reflector. With an operating frequency of 106 MHz and a wavelength of 3 m (10 ft) this large antenna was required to generate a sufficiently narrow beamwidth to ...

3. List of catastrophic collapses of broadcast masts and towers

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

   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 ...

4. Category : Military radio systems of the United States

   en.wikipedia.org/wiki/Category:Military_radio...

   Radio systems of the United States Army (6 P) Pages in category "Military radio systems of the United States" The following 114 pages are in this category, out of 114 total.

5. Radio masts and towers - Wikipedia

   en.wikipedia.org/wiki/Radio_masts_and_towers

   One problem with radio masts is the danger of wind-induced oscillations. This is particularly a concern with steel tube construction. One can reduce this by building cylindrical shock-mounts into the construction. One finds such shock-mounts, which look like cylinders thicker than the mast, for example, at the radio masts of DHO38 in Saterland.

6. Circularly disposed antenna array - Wikipedia

   en.wikipedia.org/wiki/Circularly_disposed...

   One of the German antenna researchers, Dr. Rolf Wundt, was one of hundreds of German scientists taken to the U.S. by the Army after the war under Operation Paperclip. He arrived in New York in March 1947 on the same ship as Wernher Von Braun and his wife and parents. He was first employed by the U.S. Air Force and then GT&E Sylvania Electronics ...

7. Turnstile antenna - Wikipedia

   en.wikipedia.org/wiki/Turnstile_antenna

   Early TV broadcast antennas used "cigar shaped" elements, shown in image of 1939 RCA Empire State Building antenna above. A common shape today is the batwing or superturnstile antenna, used for television broadcasting in the VHF or UHF bands [8] The batwing shape of each element produces an antenna with wide impedance bandwidth. [1]

8. AOL Mail - AOL Help

   help.aol.com/products/aol-webmail

   Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.

9. Television antenna - Wikipedia

   en.wikipedia.org/wiki/Television_antenna

   A short antenna pole next to a house Multiple Yagi TV aerials. Antennas are commonly placed on rooftops and sometimes in attics. Placing an antenna indoors significantly attenuates the level of the available signal. [19] [20] Directional antennas must be pointed at the transmitter they are receiving; in most cases great accuracy is not needed ...