RT Logic, a subsidiary of Integral Systems Inc., began deliveries of equipment suites for the GPS Black Shelter Equipment Upgrade, Integral announced.

The equipment suite, delivered under a $5.2 million contract awarded to RT Logic in 2004 by prime contractor Boeing Space & Communications, allows for upgrade of the antenna control, radio frequency, baseband processing and signal routing equipment at GPS ground antenna sites.

The systems will be installed at GPS antenna stations at Ascension Island, Diego Garcia, Kwajalein Atoll and Cape Canaveral, Fla. The contract includes additional deliveries for the GPS Telecommunications Simulator Test System at Cape Canaveral and Boeing’s GPS Center in Colorado Springs, Colo.

Installations should be completed in 2006, Integral said.