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Owned by Intelsat, some of the satellite's users include DirecTV's Brazil and Latin America systems, the Racetrack TV Network DBS service, and HughesNet. DirecTV is currently slowly discontinuing use of this satellite, with international channels moving to T12 and T14. Rite Aid, TJ Maxx, and Chevron use Galaxy 3C as a VSAT platform.
Ku-band satellite 123.0°W: Galaxy 18: LS-1300: United States Intelsat: Television and radio broadcasting North America: 21 May 2008, [[Zenit Hybrid C/K u-band satellite 2008-11-19 121.0°W: Galaxy-23: FS-1300: United States Intelsat: Direct Broadcasting North America: 7 August 2003: Hybrid C/K u /K a-band satellite; C band payload referred to ...
DirecTV supplies BBCs with all 5-LNB K u /K a-band dish systems. The satellite signal from T10 is downconverted at the dish to the frequency range of 250-750 MHz, called "K a-lo". At the receiver when necessary, the BBC in response to a control signal from the receiver blocks any original "K a-hi" signals between 1650-2150 MHz. Then up-converts ...
On February 25, 2021, AT&T announced that it would spin-off DirecTV, U-Verse TV, and AT&T TV into a separate entity, selling a 30% stake to TPG Inc., while retaining a 70% stake in the new standalone company. The deal closed on August 2, 2021. [6] [7] DirecTV Stream, which offers Live TV and On Demand content, launched in August 2021. [79]
The T14 satellite is the sixth satellite built by SSL (Space Systems/Loral) for operator DirecTV. The high-capacity spacecraft is based on the SSL 1300 platform, T14 is a 20-kilowatt class Ka-band and reverse-band digital broadcast satellite that will be used to deliver Ultra HD and other new consumer services for DirecTV.
Directivity is an important measure because many antennas and optical systems are designed to radiate electromagnetic waves in a single direction or over a narrow-angle. By the principle of reciprocity , the directivity of an antenna when receiving is equal to its directivity when transmitting.
Wireless LAN (WLAN) channels are frequently accessed using IEEE 802.11 protocols. The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacing (except in the 45/60 GHz band, where they are 0.54/1.08/2.16 GHz apart) between the centre frequency of the channel.
For an ideal uniformly illuminated parabolic reflector and θ in degrees, k would be 57.3 (the number of degrees in a radian). For a typical parabolic antenna, k is approximately 70. [14] For a typical 2 meter satellite dish operating on C band (4 GHz), this formula gives a beamwidth of about 2.6°.
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