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1Hz click external noise? - HF Radar ?
Yes and I`ve often heard a regular pulse in the USA every time a radar
antenna swept in my direction within line of sight range. Radar was in the gigahertz band but the disturbed receiver was at a much lower frequency and of good quality. There's a municipal airport, KSDL, about 2 miles from me. Except for a very occasional tree, it's line of sight. However, 1Hz would require a very fast rotating radar antenna!!! Most radar antennas rotate much slower than that, normally in the region of 5 to 7 seconds, although a few ground surveillance radars to rotate a bit quicker. Also 1Hz is a bit slow for the prf of an OHR, they normally sound like a buzzing sound. 73 Jeff |
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