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2. 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 ...

3. Antenna farm - Wikipedia

   en.wikipedia.org/wiki/Antenna_farm

   In telecom circles, any area with more than three antennas could be referred to as an antenna farm. In the case of an AM broadcasting station (mediumwave and longwave, occasionally shortwave), the multiple mast radiators may all be part of an antenna system for a single station, while for VHF and UHF the site may be under joint management.

4. Clear-channel station - Wikipedia

   en.wikipedia.org/wiki/Clear-channel_station

   There exist exceptions, where a former Class B station was elevated to Class A, yet it maintained its previous antenna system, or made only minor changes thereto. Clear-channel stations, unlike other AM stations in North America, have protection from interference to their nighttime skywave secondary service area .

5. 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 ...

6. Antenna effect - Wikipedia

   en.wikipedia.org/wiki/Antenna_effect

   Antenna rules are normally expressed as an allowable ratio of metal area to gate area. There is one such ratio for each interconnect layer. The area that is counted may be more than one polygon —it is the total area of all metal connected to gates without being connected to a source/drain implant.

7. Broadcast signal intrusion - Wikipedia

   en.wikipedia.org/wiki/Broadcast_signal_intrusion

   Officials put forth other theories that could explain the incident, such as a videotape having been brought into the studio and watched by the technician, or deliberate sabotage from an outside prankster, in similar fashion to WSB-TV's 1980 broadcast signal interruption (described above), but Sturdivant let it be known he still believed an ...

8. Electronic article surveillance - Wikipedia

   en.wikipedia.org/wiki/Electronic_article...

   Electronic article surveillance antennas at an H&M store in Torp shopping mall, Sweden. Electronic article surveillance (EAS) is a type of system used to prevent shoplifting [1] from retail stores, pilferage of books from libraries, or unwanted removal of properties from office buildings. EAS systems typically consist of two components: EAS ...

9. Cassegrain antenna - Wikipedia

   en.wikipedia.org/wiki/Cassegrain_antenna

   A beam waveguide antenna is a type of complicated Cassegrain antenna with a long radio wave path to allow the feed electronics to be located at ground level. It is used in very large steerable radio telescopes and satellite ground antennas, where the feed electronics are too complicated and bulky, or requires too much maintenance and alterations, to locate on the dish; for example those using ...