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Radio Propagation


Solar X-rays:
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D-Region Absorption
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Created by PA4RM

The International Amateur Radio Union Region 1 (IARU-R1) Monitoring System (IARUMS) reports that an over-the-horizon (OTH) radar located on Cyprus has been active on 21.170 MHz, which is inside an exclusive Amateur Radio allocation. “The Sovereign Base areas of Akrotiri and Dhekelia is a British Overseas Territory on the island of Cyprus,” IARUMS Coordinator Wolf Hadel, DK2OM, explained in the ...

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