With sunspot numbers and solar flux at times both above 300, recent daily space weather has been exciting for radio amateurs who watch the sun. We like higher activity because it correlates with a dense ionosphere, bringing with it better conditions on higher frequencies.
This extreme activity also comes with greater geomagnetic disturbance, which cause higher absorption of HF signals.
For exa...
Thursday, August 15, 2024 Midday Update:
The National Hurricane Center reports that Tropical Storm Ernesto had become a Category 1 hurricane.
A hurricane warning has now been issued for Bermuda and dangerous rip currents are likely along U.S. East Coast beaches this weekend, August 17 - 18.
Bobby Graves, KB5HAV, Hurricane Watch Net Manager, reports the net’s activation plans:
Friday August 16
By: Frank Donovan, W3LPL
Editor’s note: This article was written earlier in the week. The latest measurements show even higher numbers. See this week's K7RA Solar Report in The ARRL Letter for latest information.
Record High Solar Cycle 25 Solar Maximum Sunspot Numbers Have Improved HF Propagation Since Mid-July and Possibly Bringing Worldwide 6 Meter F2 Propagation This Fall.
According to the NO...
The Federal Communications Commission (FCC) accepted for public comment a Petition for Rulemaking filed by NextNav Inc., a licensee in the 900-MHz Location and Monitoring Service (LMS), to completely reconfigure the 902-928 MHz band and replace the LMS with high-powered 5G cellular and related location services.
The FCC Notice requested comment on the effects that NextNav’s proposals would have ...
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