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
10Mhz.



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:

http://ac6v.com/propagation.htm#HF



http://www.sec.noaa.gov/info/FAQ.html#g4



http://www.trsc.com/ref_propagation.html

This ones titled "how come i can't hear anything?"



Gd DX et al



Signal In The Noise



=========================================





"J999w" wrote in message
...
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.

:^]

jw
wb9uai

"Signal In The Noise" wrote in message
news:dHS1b.14965$S_.10595@fed1read01...
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
10Mhz.


I can testify to the above ten Mhz thing. I had switched to getting BBC's
European feed on 12095 Khz and now have switched back to 5975. Oh well, they
are out there somewhere.



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:

http://ac6v.com/propagation.htm#HF



http://www.sec.noaa.gov/info/FAQ.html#g4



http://www.trsc.com/ref_propagation.html

This ones titled "how come i can't hear anything?"



Gd DX et al



Signal In The Noise



=========================================





"J999w" wrote in message
...
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.

:^]

jw
wb9uai




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