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A helical antenna is an antenna consisting of one or more conducting wires wound in the form of a helix.A helical antenna made of one helical wire, the most common type, is called monofilar, while antennas with two or four wires in a helix are called bifilar, or quadrifilar, respectively.
The output indicates that the antenna has a maximum gain of 9.75 dBi, a little over three times the gain of an isotropic antenna. However, as the signal moves even five degrees to the side, this has dropped to 9.5. When you reach 75 degrees off the front, the antenna begins to have negative gain.
CIBC Theatre is a performing arts theater located at 18 West Monroe Street in the Loop area of downtown Chicago. It is operated by Broadway In Chicago , part of the Nederlander Organization . Opened in 1906 as the Majestic Theatre , [ 1 ] it currently seats 1,800 and for many years has presented Broadway shows.
Apollo Theater Chicago [54] Arie Crown Theatre [55] Auditorium Theatre [56] Briar Street Theater [57] Broadway Playhouse at Water Tower Place (formerly Drury Lane Water Tower Place) [58] Bughouse Theater; Cadillac Palace Theatre [59] Chicago Theatre [60] CIBC Theatre (formerly The Shubert Theatre) [61] Congress Theater [62] Greenhouse Theater ...
Omnidirectional radiation patterns are produced by the simplest practical antennas, monopole and dipole antennas, consisting of one or two straight rod conductors on a common axis. Antenna gain (G) is defined as antenna efficiency (e) multiplied by antenna directivity (D) which is expressed mathematically as: =.
The rubber ducky antenna (or rubber duck aerial) is an electrically short monopole antenna, invented by Richard B. Johnson, that functions somewhat like a base-loaded whip antenna. It consists of a springy wire in the shape of a narrow helix , sealed in a rubber or plastic jacket to protect the antenna. [ 1 ]
The Vic Theatre is a music venue located in Chicago, Illinois. Vic Theatre can easily accommodate 1,400 people or with a seated capacity of 1,000. Vic Theatre can easily accommodate 1,400 people or with a seated capacity of 1,000.
During hockey season, the Blackhawks use an Allen TH323 Theatre Organ that is a replica of the Chicago Stadium's famous Barton organ. Recreating the old organ's notes took two years. [20] The building is 140 feet (43 m) tall, [21] and is of concrete and steel construction, with 3,500 tons of steel being utilized in its construction.