Aethercomm P/N TR 1.75-1.85-125 is a high power transmit/receive module packaged in a very compact 5.0" by 9.0" by 2.0" extremely rugged package. This TR module operates over the High Military L Band Frequency Range and provides TDma data communications of time-space-position information between aircraft and ground stations. It is employed on fighter and attack aircraft for combat training. The system operates in transmit or receive mode at any given time but not simultaneously. Typical transmit duty cycles do not exceed 10%. In Rx mode, the module provides a low noise front-end that includes band limited filtering, a high power limiter, low-noise amplification and image rejection filtering. In the Tx mode, the module amplifies a low level, L Band signal up to a power level of greater than 125 watts at the antenna. The antennal port offers a bi-directional interface to the Rx and Tx sections of the module. This unit is fully GPS compliant. Standard features include forward power monitoring, reflected power monitoring, output short and open circuit protection, over and under voltage protection, receiver protection, very fast switching speeds between Rx and Tx operation, an over-temperature alarm feature and a fully regulated DC-DC converter. This unit operates from a 28Vdc; -28Vdc and a +12 Vdc power supplies and can survive temperatures of 95ºC base plate temperature. This high performance module is enclosed in a compact housing that is inserted in to an internal bay of fighter and attack aircraft. It is environmentally sealed and will pass MIL-STD-461E EMI testing.
