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Radio Propagation


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

The ARRL Foundation has awarded $3,000 to the Open Research Institute (ORI). The grant will be applied to Phase 1 of the Digital Multiplex Transponder research and development program. ORI is an IRS 501(c)(3) organization dedicated to open-source research and development in amateur radio. This grant will allow hardware prototypes for broadband microwave digital satellite payloads to proceed mor...

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