NOAA’s Space Weather Prediction Center (SWPC) says solar activity is “high and intensifying,” and radio blackouts reaching the R3 levels have been observed over the past 24 hours. An R3 event can cause a wide-area blackout of HF radio communication and a loss of radio contact for about an hour on Earth’s sunlit side. Low-frequency navigation signals may be degraded for about an hour as well. A…
American Radio Relay League | Ham Radio Association and Resources
The ARRL Handbook for Radio Communications is widely recongnized as being the standard reference among radio amateurs and other technologists-experimenter, engineers and students. It’s filled with essential information from accross the expanse of radio communication fundamentals, covering nearly every aspect of radio and antenna design, equipment construction, and station assembly. CD-ROM included.
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