[CQ-Contest] Where is possible to find past prop data ?
Bill Tippett
btippett at alum.mit.edu
Sun Aug 26 20:31:28 EDT 2001
IT9GSF wrote "but SFI, K and A indexes will work fine."
The following link will give you SFI, and SSN back to 1954. You
must read the data graphically but that will be close enough for what
you
need:
http://www.dxlc.com/solar/history/
73, Bill W4ZV
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