Medium-Data-Rate HF Experimental Test Results Using Modified Harris RF-3201E Transceiver and R-2368/URR Receiver

This report describes the experimental test results of a medium-data-rate MDR, high-frequency HF groundwave point-to-point, full-duplex data link. This system uses relatively simple modifications of existing radio equipment and a commercial programmable satellite communications SATCOM modem. The goal is to develop and implement a 128-kbps Beyond-Line-Of-Sight BLOS HF communication link within a 50-kHz, 3-dB bandwidth frequency channel. This is one of several efforts that attempts to increase the data rates that are commonly used in the HF band within the Navy for intraship BLOS communications. The tests performed included laboratory back-to-back and over-the-air operational tests. The laboratory portion of these tests was performed at Space and Naval Warfare SPAWAR Systems Center, San Diego SSC San Diego, primarily between March and June of 1997. In September 1997, the over-the-air tests were conducted over the 65-nmi seawater path between Wilson Cove at San Clemente Island SCI, California, and Building 40, SSC San Diego, on Point Loma, California.