Solar Flux Index (SFI):The measure of total radio emissions from the sun< 70: propagation potentially bad on 10,12,15,17,20 meter bands.
80-90: propagation potentiallyare somewhat low on 10,12,15,17,20 meter bands.90-100: propagationtend to be average on 10,12,15,17,20 meter bands.100-150: propagationwill tend to be good on 10,12,15,17,20 meter bands.>150: propagationwill tend to be ideal on 10,12,15,17,20 meter bands.Sunspot Numbers (SN):< 50: propagation conditions potentially very bad on 10,12,15,17,20 meter bands.50-75: propagation conditions attenuated on 10,12,15,17,20 meter bands.75-100: propagation conditions might be good on 10,12,15,17,20 meter bands.100-150: propagation conditions should be ideal on 10,12,15,17,20 meter bands.>150: propagation conditions possibly exceptional on 10,12,15,17,20 meter bands.A-Index: the overall geomagnetic condition of the ionosphere1 - 5: Best conditions on 10,12,15,17,20 meter bands.6 - 9: Average conditions on 10,12,15,17,20 meter bands.10 >: Very Bad conditions on 10,12,15,17,20 meter bands.K-Index: The overall geomagnetic condition of the ionosphere0 - 1: Best conditions for 10,12,15,17,20 meter bands.2: ok conditions for 10,12,15,17,20 meter bands.3 - 4 : Bad conditions for 10,12,15,17,20 meter bands.5 +: Very bad conditions for 10,12,15,17,20 meter bands.
District of Columbia
US Districts, Territories, Other Countries
Got my Technician license back on Oct 2, 1993 - I upgraded to General on Dec 15, 2012
I did a vanity callsign change from KE6DJX to N6DDR on 12/8/2015
7657674 Last modified: 2016-10-26 18:07:44, 23485 bytes