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QRP ARCI YouTube Channel

system / 2026-05-25

https://www.youtube.com/@QRP_ARCI

Solar Activity & HF Propagation

system / 2013-01-21

Paul Harden NA5N is well known in QRP circles. At FDIM (Four Days In May) 2005 he made a presentation on Solar Activity and HF Propagation which has become a

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