|[AMRadio] Space Bulliten|
garyschafer at comcast.net
Sat Jan 15 22:16:58 EST 2005
When did resonant antennas become a requirement for any type of
> This will affect anyone operating on HF.
> Signals need good, proper, resonant antennas.
> After antenna, is power. Not a lot of power is
> needed, if you've got a good working antenna.
> But it's all for naught, if there's no propagation.
> 73 = Best Regards,
> Subject: Space-Weather-Bulletin
> Official Space Weather Advisory issued by NOAA Space Environment Center
> Boulder, Colorado, USA
> SPACE WEATHER ADVISORY BULLETIN #05-1 2005 January 14 at 03:51 p.m.
> MST (2005 January 14 2251 UTC)
> **** RAPIDLY GROWING SUNSPOT REGION ****
> <>On 10 January, a new sunspot group emerged and was assigned NOAA Region
> number 720. This sunspot group has grown rapidly and currently has an
> area of 1540 millionths of the size of the Solar disk (about 18 times
> the size of the Earth). So far this region has only produced minor
> flare activity (R1). However, its growth and complexity suggest that it
> is capable of moderate to strong levels of flare activity (R2 to R3
> levels) during the next 7 days. . <>
> These types of flares lead to HF radio blackouts.
> The effects range from minor degradation of HF communication (R1), up to
> wide area blackouts on the daylit side of the earth for about an hour (R3).
> Data used to provide space weather services are contributed by NOAA,
> USAF, NASA, NSF, USGS, the International Space Environment Services and
> other observatories, universities, and institutions. For more
> information, including email services, see SEC's Space Weather
> Advisories Web site http://sec.noaa.gov/advisories or (303) 497-5127.
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