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Topics - nickcarr

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HF Mystery Signals / Cross-hatch Radar on 14950cf in Japan
« on: January 15, 2016, 1132 UTC »
What do you guys think?  Very strong in Japan.  Sounds like low frequency pulses in AM mode.  Thump Thump Thump. Perhaps 2-3 per second.

Looks cool on the waterfall:

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Item image   The ARRL Antenna Book 15th Edition, Second Printing, 1988