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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

Radio amateurs attending the 20th Young Researchers Congress in M√ľnster, Germany, plan to launch an APRS-carrying weather balloon on March 21. The payload will transmit on 433.000 MHz with the call sign DL9II-11. The weather balloon carries a probe with two cameras, meteorological probes, and a Geiger counter. Two University of Heidelberg students will handle the launch under the supervision of...

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