Space

OH/UH 2-CHANNEL (R-2399( )/A / R-2400( )/A)

The 2-channel receiver was part of the initial suite of GPS UE which used several circuit cards in common with the 3A, but was housed in a smaller, lighter weight box. Use of 2 channels (compared with five in the 3A) suited its intended application as a medium dynamics receiver for integration into light aircraft and helicopters. Th UH receiver is now undergoing the first-ever organic modification to any GPS UE. This is a software mod to correct a problem with the CDU locking up when satellite PRN 30 was being tracked. In addition, several enhancements are being implemented, including Magvar and datums, and the ability to properly track and display PRN 32. The OH receiver underwent a similar modification in early 1998.