The Ka band is a portion of the microwave part of the electromagnetic spectrum defined as frequencies in the range 26.5–40 gigahertz (GHz), i.e. wavelengths from slightly over one centimeter down to 7.5 millimeters. The band is called Ka, short for "K-above" because it is the upper part of the original NATO K band, which was split into three bands because of the presence of the atmospheric water vapor resonance peak at 22.24 GHz (1.35 cm), which made the center unusable for long range transmission. The 30/20 GHz band is used in communications satellite uplinks in either the 27.5 GHz and 31 GHz bands, and high-resolution, close-range targeting radars aboard military airplanes. Some frequencies in this radio band are used for vehicle speed detection by law enforcement. The Kepler Mission used this frequency range to downlink the scientific data collected by the space telescope.
The Indian National Satellite System or INSAT, is a series of multipurpose geostationary satellites launched by ISRO to satisfy the telecommunications, broadcasting, meteorology, and search and rescue operations. Commissioned in 1983, INSAT is the largest domestic communication system in the Indo-Pacific Region. It is a joint venture of the Department of Space, Department of Telecommunications, India Meteorological Department, All India Radio and Doordarshan. The overall coordination and management of INSAT system rests with the Secretary-level INSAT Coordination Committee.
SES S.A. is a Luxembourgish satellite telecommunications network provider supplying video and data connectivity worldwide to broadcasters, content and internet service providers, mobile and fixed network operators, governments and institutions.
AMOS is a series of Israeli communications satellites operated by Israel-based Spacecom. All AMOS satellites were developed by Israel Aerospace Industries (IAI) using the AMOS bus satellite bus, except for AMOS-5 which was developed by ISS Reshetnev using the Ekspress bus satellite bus, and AMOS-17 which was developed by Boeing on its BSS-702.
AsiaSat 2 was a Hong Kong communications satellite, which was owned, and was initially operated, by the Hong Kong based Asia Satellite Telecommunications Company. It was positioned in geostationary orbit at a longitude of 17° East of the Greenwich Meridian, on lease to Spacecom. It spent most of its operational life at 100.5° East, from where it was used to provide fixed satellite services, including broadcasting, audio and data transmission, to Asia and the Pacific Ocean.
Spacecom, or Space Communication, is an Israeli communications satellite operator in the Middle East, European Union and North America headquartered in the city of Ramat Gan, Israel. Spacecom operates two satellites at orbital position 4° West – AMOS-3 and AMOS-7, one satellite at orbital position 65° East – AMOS-4, and one satellite at orbital position 17° East – AMOS-5.
AMOS-1, then INTELSAT 24, is a commercial communications satellite which was operated by Spacecom as AMOS-1, for Affordable Modular Optimized Satellite and formed part of the AMOS series of satellites. It was the first Israeli civilian communications satellite, and was initially positioned at 4° West longitude in geostationary orbit. Then in September 2011, it was moved to 31° East.
AMOS-3, also known as AMOS-60, is an Israeli communications satellite operated by Spacecom Satellite Communications.
The DirecTV satellite fleet is a group of communications satellites located at various geostationary orbits that DirecTV uses for their satellite television service and HughesNet internet service. The "DirecTV" prefix in their names has been changed to "T".
The European Data Relay System (EDRS) system is a European constellation of GEO satellites that relay information and data between satellites, spacecraft, UAVs, and ground stations. The first components were launched in 2016 and 2019.
GSAT-11 is an Indian geostationary communications satellite. The 5854 kg satellite is based on the new I-6K Bus and carry 40 transponders in the Ku-band and Ka-band frequencies, which are capable of providing up to 16 Gbit/s throughput. GSAT-11 is India's heaviest satellite.
AMOS-6 was an Israeli communications satellite, one of the Spacecom AMOS series, that was built by Israel Aerospace Industries (IAI), a defense and aerospace company.
AMOS-4 is an Israeli commercial communications satellite, operated by Spacecom Satellite Communications, Tel Aviv-based, part of the AMOS series of satellites.
AsiaSat 8 then AMOS-7 is a Hong Kong-turned-Israeli geostationary communications satellite which is operated by the Asia Satellite Telecommunications Company (Asiasat).
SES-10, is a geostationary communications satellite awarded in February 2014, owned and operated by SES S.A. and designed and manufactured by Airbus Defence and Space on the Eurostar-3000 satellite bus. It is positioned at the 67° West position thanks to an agreement with the Andean Community to use the Simón Bolivar-2 satellite network. It replaces AMC-3 and AMC-4 to provide enhanced coverage and significant capacity expansion.
JCSAT-16 is a geostationary communications satellite operated by SKY Perfect JSAT Group and designed and manufactured by SSL on the SSL 1300 platform. It has a launch weight of 4,600 kg (10,100 lb), a power production capacity of 8.5 kW and a 15-year design life. Its payload is composed of Ku band and Ka band transponders. SKY Perfect JSAT Group plans to use JCSAT-16 as an in-orbit backup satellite for the Ku- and Ka-band satellites serving the Japanese market.
The JSAT constellation is a communication and broadcasting satellite constellation formerly operated by JSAT Corporation and currently by SKY Perfect JSAT Group. It has become the most important commercial constellation in Japan, and fifth in the world. It has practically amalgamated all private satellite operators in Japan, with only B-SAT left as a local competitor.
Intelsat 35e, also known as IS-35e is an Intelsat high-throughput (HTS) geostationary communications satellite designed and manufactured by Boeing Satellite Systems on the Boeing-702MP satellite bus. It was launched on 5 July 2017.
GSAT-29 is a high-throughput communication satellite developed by the Indian Space Research Organisation (ISRO). The mission aims at providing high-speed bandwidth to Village Resource Centres (VRC) in rural areas. The two Ku and Ka operational payloads will provide communication services to Jammu and Kashmir and Northeast India under Digital India programme. At the time of launch GSAT-29 was the heaviest satellite, weighing 3,423 kg (7,546 lb), that was placed in orbit by an Indian launch vehicle. Approved cost of GSAT-29 is ₹175.63 crore (US$22 million).
AMOS-8 is a planned Israeli communications satellite, one of the Spacecom AMOS series, that is built by Israel Aerospace Industries (IAI), a defense and aerospace company, for replaced AMOS-6 and AMOS-7
