HF IBP/NCDXF
NORTHERN CALIFORNIA DX FONDATION
I.A.R.U. INTERNATIONAL BEACON PROJECT (IBP)
www.ncdxf.org/
SOLAR DATA SITES:
www.spaceweather.com/
www.N3KL.org/
NASA: umbra.nascom.nasa.gov/
N0NBH: members.cox.net/
www.ngdc.noaa.gov/stp/SOLAR/
www.solarcycle24.com/
www.esa.int/esaSC/
www.lmsal.com/solarsoft/
www.heavens-above.com/sun
sidc.oma.be/LatestSWData/
www.hamqsl.com/solar.html
www.space.com/scienceastronomy/solarsystem/
solar.physics.montana.edu/