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Type of parabolic antenna
An offset dish antenna or off-axis dish antenna is a type of parabolic antenna. It is so called because the antenna feed is offset to the side of the
Offset_dish_antenna
Type of antenna
(or feedhorn) is a small horn antenna used to couple a waveguide to e.g. a parabolic dish antenna or offset dish antenna for reception or transmission
Feed_horn
Rectangular two-element array antenna
The Moxon antenna or Moxon rectangle is a simple and mechanically rugged two-element parasitic array, single-frequency antenna. It takes its name from
Moxon_antenna
Type of antenna
waves. The most common form is shaped like a dish and is popularly called a dish antenna or parabolic dish. It functions similarly to a searchlight or
Parabolic_antenna
Type of parabolic antenna with a convex secondary reflector
reflector and the feed antenna are located on the central axis of the dish. However, in offset Cassegrain configurations, the primary dish reflector is asymmetric
Cassegrain_antenna
Topics referred to by the same term
position Frequency offset, the difference between a source and a reference frequency Offset dish antenna, a type of satellite dish Phase offset, see phase (waves)
Offset
Dipole antenna optimized for operation in the High Frequency bands
this antenna in 1946. It is very popular in the United States. The antenna can be erected as horizontal dipole, as sloper, or an inverted-V antenna. With
G5RV_antenna
Type of radio-wave propagation
distinction arises solely from different desirable radiation patterns of the antennas (near vertical for NVIS, near horizontal for conventional long-range skywave
Near vertical incidence skywave
Near_vertical_incidence_skywave
The sloper antenna is a slanted dipole antenna. While horizontal dipoles required two large support masts, this antenna type only needs one large mast
Sloper_antenna
Shortwave antenna
Isotron is the trade name for a shortwave antenna marketed by Bilal Co. for use as an amateur radio transmitting antenna for restricted spaces. It is physically
Isotron
Antenna constructions for different applications
formed into a screen, or metallic curtain, or curved dish. Usually only one of the component antennas is resonant on the design frequency, and in that typical
Antenna_types
Spherically symmetric gradient-index lens
to avoid suffering coma (a form of de-focussing). Apart from offset systems, dish antennas suffer from the feed and its supporting structure partially
Luneburg_lens
Non-commercial use of the radio spectrum
also affect transmissions: The United Kingdom measures at the point the antenna is connected to the signal feed cable, which means the radio system may
Amateur_radio
Reflector that has the shape of a paraboloid
searchlights, stage spotlights, and car headlights. In radio, parabolic antennas are used to radiate a narrow beam of radio waves for point-to-point communications
Parabolic_reflector
Type of radio antenna
A Yagi–Uda antenna, or Yagi antenna, is a directional antenna consisting of two or more parallel resonant antenna elements in an end-fire array; these
Yagi–Uda_antenna
Antenna used with a television to receive television programs
A television antenna, also called a television aerial (in British English), is an antenna specifically designed for use with a television receiver (TV)
Television_antenna
Radar system used in air traffic control
to produce twice the power to a Hogtrough antenna array compared to a PSR parabolic dish or LVA type antenna array with cosec2 type elevation patterns
Secondary_surveillance_radar
Beam focusing, typically horn-fed planar array of unit cells
to the unit cells to steer the beam direction. It is common to offset the feeding antenna to prevent blockage of the beam. In this case, the phase distribution
Reflectarray_antenna
Device that transmits and receives radio waves
high-gain antenna is a parabolic dish such as a satellite television antenna. Low-gain antennas have shorter range, but the orientation of the antenna is relatively
Antenna_(radio)
Satellite dish used by British Satellite Broadcasting
installations usually required a 90 cm dish in order to receive a clear signal from the transmitting satellite. The smaller antenna was BSB's unique selling point
Squarial
Reception of satellite television from FSS-type satellites
than C band. Large dishes have higher antenna gain, which can be an advantage when used with DBS signals such as Dish Network and DirecTV, virtually eliminating
Television_receive-only
Object detection system using radio waves
that beam will be reinforced. Signals offset from that beam will be cancelled. The amount of reinforcement is antenna gain. The amount of cancellation is
Radar
German WWII ground-based tracking radar
offset receiver feed called a Quirl (German for whisk) that spun at 25 Hz. The resulting signal was slightly offset from the centreline of the dish,
Würzburg_radar
Signal processing device
broadcast satellite TV dish antenna and a terrestrial TV antenna (local broadcast channels) to share one coaxial cable. The dish antenna occupies the high
Diplexer
Type of dish antenna designed in the 1970s
The Leighton Radio Telescopes are 10.4 meter parabolic dish antennas designed by Robert B. Leighton in the 1970s, which were fabricated on the Caltech
Leighton_Radio_Telescopes
is straight on using geometric calculations. Antenna tracking system Automatic Tracking Satellite Dish Satellite finder DiSEqC = Digital Satellite Equipment
Universal Satellites Automatic Location System
Universal_Satellites_Automatic_Location_System
Radio communications technique
of 144 MHz EME antenna array at WA6PY in California, U.S. A dish antenna for microwave EME work at WA6PY, California, U.S. A dish antenna for UHF EME at
Earth–Moon–Earth communication
Earth–Moon–Earth_communication
Electronic amplifier that converts weak signal into strong signal
length; for an antenna near a receiver, such an amplifier only adds noise.) A component in the electronic part of a satellite receiver dish A circuit inside
Preamplifier
Movable mount for satellite dishes
equatorial mount). Declination offset Because satellites toward the Eastern and Western sky are further away from the observing antenna, there is a change in the
Polar_mount
Behaviour of travelling radio waves
waves which travel in a straight line from the transmitting antenna to the receiving antenna. Line of sight transmission is used for medium-distance radio
Radio_propagation
64-antenna radio telescope in South Africa
of 64 dishes of 13.5 metres in diameter each with an offset Gregorian configuration. An offset dish configuration has been chosen because its unblocked
MeerKAT
replaced the original "cheese" antenna with a much larger parabolic reflector with much higher antenna gain, more than offsetting the signal losses in the coaxial
Type_277_radar
Type of missile guidance system
signal shown at the bottom of the diagram (spectrum). Antenna offset angle of the missile antenna is set after the target is acquired by the missile seeker
Semi-active_radar_homing
Qatari television and radio satellite
downlink: 90 cm offset dish standard Ku-band LNB F6DZP MiniTiouner, Octagon SF4008 or SDR software decoders Uplink equipment: 120 cm dish (preferably larger)
Es'hail_2
Astronomical radio interferometer in Hawaii, USA
of the dish. The initial adjustment of the surface panels in Hawaii was done in the service hangar, using a rotating template. After the antennas were deployed
Submillimeter_Array
German military reconnaissance satellite system
reflector antenna of 3.3 m × 2.7 m size. The choice of using a single-beam offset reflector antenna instead of an active beam-steering antenna represented
SAR-Lupe
Wi-Fi used for network connectivity
reflector, offset-fed, 2.44 by 2.74 m (8 by 9 ft). On both ends the feeds were 12 dBi Yagis. Linksys WRT54G series routers fed the antennas with short
Long-range_Wi-Fi
International radio telescope project
planned 131,000 antennas in March 2025, but completion is not expected until about 2030. SKA-mid array: an array of several thousand dish antennas (around 200
Square_Kilometre_Array
Changing the direction of the main lobe of a radiation pattern
pattern of an antenna below (or above) the horizontal plane. In radio and radar systems, beam steering may be accomplished by switching the antenna elements
Beam_steering
The first smart antennas were developed for military communications and intelligence gathering. The growth of cellular telephone in the 1980s attracted
History_of_smart_antennas
Transmission of information via microwaves
allows conveniently sized antennas to direct them in narrow beams, which can be pointed directly at the receiving antenna. This use of tightly focused
Microwave_transmission
Combination of concave and convex mirrors
example of a cassegrain radio antenna is the 70-meter (200 foot) dish at JPL's Goldstone antenna complex. For this antenna, the final focus is in front
Cassegrain_reflector
NASA/ESA solar probe launched in 1990
A third antenna, of hollow beryllium copper, was deployed from the body, along the spin axis opposite the dish. It was a monopole antenna, 7.5 meters
Ulysses_(spacecraft)
cylindrical parabolic antenna at Ooty Radio Telescope Complex near Ooty, Tamil Nadu, India (Early 1970s) The 70 meter DSS 14 "Mars" antenna at Goldstone Deep
List_of_radio_telescopes
Radio telescope array in California
either of these single-dish telescopes. The antennas for the ATA are 6.1 x 7.0 meters (20.0 ft x 23.0 ft) hydroformed offset Gregorian telescopes, each
Allen_Telescope_Array
Transmission of video in amateur radio bands
television or analog cable-box to cable input and attaching an outdoor antenna. For more sensitive reception, some users may use a purposely-built ATV
Amateur_television
WWII German radar equipment
support this system which worked at approx 125-160 MHz two antenna were placed inside the main dish. A separate interrogation and receiving units were attached
Luftwaffe and Kriegsmarine radar equipment of World War II
Luftwaffe_and_Kriegsmarine_radar_equipment_of_World_War_II
the electronics from the 1.5 m wavelength ASV Mark I connected to new antennas and a unique lobe switching system. The American SCR-268 and German Würzburg
Searchlight_Control_radar
Receiver designed to receive unencrypted broadcasts
a standard satellite dish antenna (which is best adapted to focus one target satellite to a single point), the toroidal antenna uses a reflector pair
FTA_receiver
Indian Earth observation satellite
dish antenna of 1-metre (3 ft 3 in) diameter which is offset mounted with a cant angle of about 46° with respect to Earth viewing axis. This antenna is
Oceansat-2
focal length of the dish. Fortunately, monoblock LNBs can be standardised for sites across Europe provided that a "standard" offset dish with a focal length/diameter
Duo_LNB
Radio telescope at Yebes, Spain
coupling of the sky to the horn antennas of the 5 frequency bands of ARIESXXI. The first element encountered is an offset-parabolic with a focal length
Yebes_Observatory_RT40m
Cold War-era British medium-range 3D radar
front of the "dish". The IFF antenna moved to the bottom of the arm. To avoid the curved back of the dish producing lift and pulling the antenna off its mount
AMES_Type_82
Rotational center of the Milky Way galaxy
Virgo A and Centaurus A. By 1954 they had built an 80-foot (24 m) fixed dish antenna and used it to make a detailed study of an extended, extremely powerful
Galactic_Center
Component of the Apollo spacecraft
omnidirectional S-band antennas on the CM were used when the attitude of the CSM kept the high-gain antenna from being pointed at Earth. These antennas were also used
Apollo command and service module
Apollo_command_and_service_module
Radio telescope in Massachusetts, US
galaxy in carbon monoxide. The "Mini" was designed with a relatively small dish and consequently a relatively large beamwidth of about 1/8 degree, which
CfA 1.2 m Millimeter-Wave Telescope
CfA_1.2_m_Millimeter-Wave_Telescope
2019 video game
Scenario, the Antenna Dish, decorative engineer cadavers (skeletons in suits, for atmosphere), a 7.5m wide by 5m tall airtight door block, an offset door, a
Space_Engineers
Indian orbiter mission to Mars (2013–2022)
(59 ft) and a 32 m (105 ft) diameter antenna of the Indian Deep Space Network were utilised. The 18 m (59 ft) dish antenna was used for communication with
Mars_Orbiter_Mission
NASA Mars rover deployed in 2004
depended on an omnidirectional low-gain antenna communicating at a low data rate and a steerable high-gain antenna, both in direct contact with the Deep
Opportunity_(rover)
Type of air-to-air radar
dipole antennas instead of one, slightly offset on either side of the mounting mast projecting through the middle of the parabolic dish. Being offset, the
AI_Mark_VIII_radar
Former American over-the-top streaming television service
which operated on a commercial basis with users paying to lease individual antennas placed in nearby warehouses. Aereo was shut down following a copyright
Locast
Soviet armoured personnel carrier
superstructure and two slim antenna masts. Bow mounted machine guns and firing ports were removed. The commander's hatch is offset to the left and does not
BTR-D
Type of klystron for generating low intensity microwaves
within the aircraft nose. This advantage was offset by the lack of a switching system to allow a single antenna to act as both a transmitter and receiver
Sutton_tube
Device that collects heat
point, similar to the way a reflecting telescope focuses starlight, or a dish antenna focuses radio waves. This geometry may be used in solar furnaces and
Solar_thermal_collector
East German anti-submarine ship
or Foe) receiver and transmitter, and an 'ELOKA' multiband passive RWR antenna slaved to a double 16-cell chaff dispenser. All in all, air defence — or
Parchim-class_corvette
Standards for terrestrial television signals
combined at the transmitter before being presented to the antenna, but separate aural and visual antennas can be used. In all cases where negative video is used
Broadcast_television_systems
Radio telescope in Green Bank, WV, US
telescope's capabilities include the ngRADAR system which use the dish as a radar transmitting antenna to observe solar system objects such as asteroids. Its low
Green_Bank_Telescope
NATO standard for military map marking symbols
symbol's centre except in the ground domain, where it is hooked to a short offset, straight down from the symbol's base centre (see diagram). Mobility indicator
NATO_Joint_Military_Symbology
Cold War-era British early warning radar
wide-band magnetron replaced the klystron, but this required a new MTI and antenna system as well. By the time these were ready the magnetron was not, and
AMES_Type_84
American media company
new agreement will be reached with Dish". Dish Network subsequently set up its own website regarding the dispute. Dish and Sinclair came to an agreement
Sinclair_Broadcast_Group
Mid level sports car (1982–1991)
changes, these included: new dashboard and door panels, embedded radio antenna, upgraded alternator (from 90 amp to 115 amp), increased oil sump capacity
Porsche_944
Radar used to locate and monitor meteorological conditions
for example the US NEXRAD. The cost of a larger antenna, klystron and other related equipment is offset by this benefit. For a 5 cm radar, absorption becomes
Weather_radar
Private association of real estate property owners
(over-the-air) rooftop antenna. These restrictions are also no longer enforceable, except in some instances. For example: the antenna may be installed at
Homeowner_association
Family of British radar systems for artillery
This powered the electronics, as well as a motor in the receiver dish that spun the antenna at 440 rpm. The same motor also drove a small two-phase alternator
GL_Mk._III_radar
History of the American pay television network
million C-band dish owners as well as by various businesses (including hotels, motels and bars) that used rooftop satellite antennas to freely receive
History_of_HBO
Kitchen cooking appliance
Any metal or conductive object placed into the microwave oven acts as an antenna to some degree, resulting in an electric current. This causes the object
Microwave_oven
Motor vehicle
holders. Body-colored ground effects, Heritage grille, Blade spoiler, and antenna. Red engine cover and red-colored Brembo brake calipers. Premium floor
Chevrolet Camaro (fifth generation)
Chevrolet_Camaro_(fifth_generation)
Electrical wire or other conductor made of copper
conductors of equal current carrying capacity, so the high tensile strength is offset by its increased weight. Ductility is a material's ability to deform under
Copper_conductor
US Air Force night fighter in service 1944-1954
tip of the nose was very rounded to accommodate the main AI radar's dish antenna, merging quickly to a rectangular cross-section that tapered slightly
Northrop_P-61_Black_Widow
Country in Central Asia
have to be removed or destroyed, despite the communications receiving antennas having been legally installed since 1995, in an effort by the government
Turkmenistan
Effort to find civilizations not from Earth
during the 1960s and performed a number of searches with omnidirectional antennas in the hope of picking up powerful radio signals. Soviet astronomer Iosif
Search for extraterrestrial intelligence
Search_for_extraterrestrial_intelligence
NASA satellite of the Explorer program
provided by two single-axis solar arrays generating 400 watts. A Ka-band dish antenna provides a 100 Mbit/s science downlink. Once injected into the initial
Transiting Exoplanet Survey Satellite
Transiting_Exoplanet_Survey_Satellite
Measurement method using interference of waves
correlates their signals, offering a resolution equivalent to that of a single-dish telescope of diameter equal to the largest separation between its individual
Interferometry
Season of television series
dish, but the only heating recorded was from sitting in the sun. ...a radar. Busted The MythBusters attached the turkey to the spinning radar antenna
MythBusters_(2006_season)
Co-operation between Ukraine and Starlink
Starlink antenna was found attached to the device, along with a Raspberry Pi computer and a CubePilot module. With an integrated Starlink dish, the drone
Starlink in the Russo-Ukrainian war
Starlink_in_the_Russo-Ukrainian_war
"Tribune Broadcasting Company Blacks Out DISH Customers in 33 Markets; DISH Offers Free Over-the-Air Antennas to Affected Customers – Business Wire" (Press
2016_in_American_television
Series of events tied to two Miami television station sales
WPEC courted Broward viewers with enhanced news coverage and special antenna deals, and the station reinforced its news presence in the southern part
1989 South Florida television affiliation switch
1989_South_Florida_television_affiliation_switch
Chronological list of advancements
on radio sources. Radio telescopes are typically large parabolic or dish antenna used singularly or in an array. Karl Guthe Jansky started the field of
Timeline of United States inventions (1890–1945)
Timeline_of_United_States_inventions_(1890–1945)
2022. Retrieved November 8, 2022. "DISH//、最新アルバム『Triangle』が自身初の二冠獲得 北村匠海「自分たちの作った音楽が、みんなに届いて、次は僕らの背中を押してくれている」" [Dish//'s latest album Triangle wins his
List_of_2023_albums
knife A knife with a broad, flat, flexible blade used in cooking. (US: offset spatula) A knife used in painting to apply paint to a canvas or other surface
List of words having different meanings in American and British English (M–Z)
List_of_words_having_different_meanings_in_American_and_British_English_(M–Z)
Overview of the events of 2023 in science
projects launched to earn carbon-offset credits have been vastly overstated to the extent that ~90% of rainforest offset credits of the Verified Carbon
January–March_2023_in_science
dropped from Dish Network, Sling Friday in new carriage dispute". USA Today. Retrieved July 27, 2019. Flint, Joe (July 26, 2019). "Dish Cuts Off 22 Disney-Owned
2019_in_American_television
original on 3 January 2022. "Chemists use DNA to build the world's tiniest antenna". University of Montreal. Retrieved 19 January 2022. Harroun, Scott G.;
2021_in_science
He is the coauthor of a patent, which is pending, for radio frequency antennas in implantable devices. The other two patents that are pending cover work
List of Puerto Rican scientists and inventors
List_of_Puerto_Rican_scientists_and_inventors
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