The higher the SFI number, the better the propagation. Typical daily SFI
values have ranged from 67 (Jan 1997) to 370 (Jan 1991).
We are now at SFI: 120 so propagation on the upper SW bands is poor -- above
The A-Index kinda sez the sun is messin with propagation
The higher the A-index, the more unstable propagation becomes.
Classification of A-indices is as follows:
A0 - A7 = quiet
A8 - A15 = unsettled
A16 - A29 = active
A30 - A49 = minor storm
A50 - A99 = major storm
A100 - A400 = severe storm
So currently the A-Index is 41 -- not good
For more -- See Propagation fundamentals at URL:
This ones titled "how come i can't hear anything?"
Gd DX et al
Signal In The Noise
> >> Geomagnetic storms reaching the G1 level are expected.
> >Yeah, but what does this mean? Could you explain?
> This means you need to catch up on your reading.