TRUMPET called Advanced Jumpseat by some observers, is reportedly a codename for a series of ELINT reconnaissance satellites launched by the United States during the 1990s to replace the Jumpseat

Jumpseat (satellite)

Jumpseat, also known as AFP-711 is reportedly a code name for a class of SIGINT reconnaissance satellites operated by the National Reconnaissance Office for the United States Air Force in the 1970s and 1980s...

 satellites. Speculated to weigh 5,200 kg, three of these satellites were launched into highly elliptical orbits by Titan 4 launch vehicles from Cape Canaveral

Cape Canaveral

Cape Canaveral, from the Spanish Cabo Cañaveral, is a headland in Brevard County, Florida, United States, near the center of the state's Atlantic coast. Known as Cape Kennedy from 1963 to 1973, it lies east of Merritt Island, separated from it by the Banana River.It is part of a region known as the...

 between 1994 and 1997. Their precise mission and capabilities are classified

Classified information

Classified information is sensitive information to which access is restricted by law or regulation to particular groups of persons. A formal security clearance is required to handle classified documents or access classified data. The clearance process requires a satisfactory background investigation...

. News reports state that the satellites monitor radio communication using antennas with diameters of 150 m. It is speculated that the satellites are manufactured by Boeing

Boeing

The Boeing Company is an American multinational aerospace and defense corporation, founded in 1916 by William E. Boeing in Seattle, Washington. Boeing has expanded over the years, merging with McDonnell Douglas in 1997. Boeing Corporate headquarters has been in Chicago, Illinois since 2001...

.

Design

According to NASA's National Space Science Data Center

National Space Science Data Center

The National Space Science Data Center serves as the permanent archive for NASA space science mission data. "Space science" pertains to astronomy and astrophysics, solar and space plasma physics, and planetary and lunar science...

, Trumpet SIGINT satellites have a large deployable mesh antenna, and were initially aimed at monitoring Soviet communications and missile tests.
Trumpet 5 is allegedly the second satellite of a new series. Its tasks are believed to be signals intelligence and early warning, using a SBIRS HEO-2 infrared missile early warning package. In addition it is supposed to carry a NASA/Los Alamos TWINS-B magnetospheric research payload.

Launches

Name	Launch date	Alternative name	COSPAR COSPAR The Committee on Space Research was established by the International Council for Science in 1958.Among COSPAR's objectives are the promotion of scientific research in space on an international level, with emphasis on the free exchange of results, information, and opinions, and providing a forum,...  ID	Launch vehicle	Orbit
Trumpet 1	3 May 1994	USA-103	1994-026A	Titan IV
Trumpet 2	10 July 1995	USA-112	1995-034A	Titan IV
Trumpet 3	8 November 1997	USA-136	1997-068A	Titan 4A
Trumpet 4	28 June 2006	USA-184	2006-027A	Delta IV
Trumpet 5	13 March 2008	USA-200	2008-010A	Atlas V 411	1,112 km x 35,780 km, i=63.6°

Cost

In 1994, the cost of Trumpet 1 (excluding launch vehicle) were estimated to more than US$ 1.5 billion (inflation adjusted more than US$ billion in ).

External links

• Trumpet SIGINT at Encyclopedia Astronautica
  Encyclopedia Astronautica
  The Encyclopedia Astronautica is a reference web site on space travel. A comprehensive catalog of vehicles, technology, astronauts, and flights, it includes information from most countries that have had an active rocket research program, from Robert Goddard to the NASA Space shuttle to the Soviet...