July 1973 | NTIA Technical Memo OT TM 73 156
July 1974 radio propagation predictions for United States Information Agency Voice of America broadcast Coverage, Volume I
Abstract: HF radio propagation predictions are calculated for Voice of America circuits using the OT/ITS prediction program. Some of the parameters given are maximum usable frequency (MUF), the optimum traffic frequency (FOT), the lowest useful frequency (LUF), available signal-to-noise ratio (SIN), and circuit reliability.
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