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Radio Propagation


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

Connecticut native Melissa Stemmer has joined the ARRL Headquarters staff as Development Manager. Born and raised in Waterbury, Stemmer earned a bachelor’s degree in pharmacy from the University of Connecticut in 1998, and she worked in that field for more than 15 years. After deciding that a career change was in order, Stemmer went back to school, earning a master’s in organizational leadershi...

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