OTH-SW is a Chinese over-the-horizon radar. It is known to operate with pulse repetition frequencies of 43 Hz and 86 Hz.
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OTHOver The Horizon (very long range)-SW is a Chinese over the horizon radar. It is known to operate with pulse repition frequencies of 43 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). and 86 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).