Thanks to Bonnie for clearly explaining what all this solar index stuff means
40m has been opening up in the evening and even cases of 20m opening up in the evening. 20m has become a daytime DX band lately and when conditions are right 40m is showing VK and European stations. The following explains why
How To Read HF Propagation Numbers
The A index = LOW is GOOD.
1 to 6 is BEST
7 to 9 is OK
11 or more is BAD
SFI index: HIGH is GOOD.
70 NOT GOOD
K index: LOW is GOOD.
0 or 1 is BEST
2 is OK
3 or more is BAD
5 is VERY VERY BAD
A low “A index” is most important!
For Low Power Portable DX openings at 10MHz to 30MHz, look for an A index LESS THAN 6.
Right NOW the…
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