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NOAA > NESDIS > NGDC > stp > ionosphere
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HF INTERNET RESOURCE LIST

SEC
 http://www.sec.noaa.gov
IPS-Ionospheric Prediction Service
 http://www.ips.gov.au
Education
 http://www.sec.noaa.gov/Education/index.html

NOTICE: The following links are not part of US government web space.

Amateur and Shortwave Radio Command Center
http://www.hfradio.org
Space Environment Information Service
http://hiraiso.nict.go.jp
Poland Helio-Geophysical Predictions Service
http://www.cbk.waw.pl/rwc/rwc.html
Ionosphere Information
 http://www.ursi.org
http://cost251.ictp.trieste.it
http://www.esa-spaceweather.net/spweather/current_sw/index.html