TRUMPET (also known as JEROBOAM and called Advanced Jumpseat by some observers) is reportedly a series of ELINT reconnaissance satellites launched by the United States during the 1990s to replace the Jumpseat satellites. Speculated to weigh 5,200 kg, three of these satellites were launched into highly elliptical (Molniya) orbits by Titan 4 launch vehicles from Cape Canaveral between 1994 and 1997. Their precise mission and capabilities are classified. 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.
According to NASA's National Space Science Data Center, 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.
|Name||COSPAR ID||Launch date||Launch vehicle||Launch site||Launch designation||Orbit||Remarks|
|USA-103||1994-026A||3 May 1994||Titan IV (401)A||CCAFS SLC-41||N/A|
|USA-112||1995-034A||10 July 1995||Titan IV (401)A||CCAFS SLC-41||N/A|
|USA-136||1997-068A||8 November 1997||Titan IV (401)A||CCAFS SLC-41||NROL-4|
|USA-184||2006-027A||28 June 2006||Delta IV M+(4,2)||VAFB SLC-6||NROL-22||Carries TWINS-A and SBIRS HEO-1 payloads|
|USA-200||2008-010A||13 March 2008||Atlas V 411||VAFB SLC-3E||NROL-28||1,112 km x 35,780 km x 63.6°||Carries TWINS-B and SBIRS HEO-2 payloads|
|USA-259||2014-081A||13 December 2014||Atlas V 541||VAFB SLC-3E||NROL-35||TBD||Carries SBIRS HEO-3 payload|
|USA-278||2017-056A||24 September 2017||Atlas V 541||VAFB SLC-3E||NROL-42||TBD||Will probably carry another SBIRS payload|
In 1994, the cost of Trumpet 1 (excluding launch vehicle) were estimated to more than US$1.5 billion (inflation adjusted more than US$ 2.6 billion in 2021).