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Radio Propagation


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

ARRL has created a new HF Band Planning Discussion Group. HF Band Planning Committee Chair Mike Raisbeck, K1TWF, will moderate the group, which will focus on the ARRL HF Band Planning Committee’s recommendations and other band-planning activities. Earlier this month, the ARRL HF Band Planning Committee invited comments and suggestions from the Amateur Radio community on its reportto the ARRL Bo...

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