Actually, the K index can go from 0 to 9, and it sometimes is 0. K index is 
an indication of the activity of the geomagnetic field over a period of 3 
hours. High K indices may lead to auroral propagation on VHF in some cases, 
enhanced propagation to the Southern Hemisphere on higher frequencies, and 
diminished or no propagation near the magnetic north pole.
I often read portions of
    www.sunspotwatch.com ,
which unfortunately uses a lot of Flash and is bulkier than it needs to be. 
I also recently have started looking at
        the page of the Space Weather Prediction Center of NOAA
http://www.swpc.noaa.gov/products/alerts-watches-and-warnings
The K index was up to 4 by 4 PM EST today.
73,

Lloyd Rasmussen, W3IUU, Kensington, MD
http://lras.home.sprynet.com
-----Original Message----- 
From: Richard B. McDonald
Sent: Thursday, December 17, 2015 7:47 AM
To: [log in to unmask]
Subject: Re: Measuring propagation

Hi Mike!

The most accessible website I have found for solar reporting is at the
following link, especially the second table (Three Day SFI and A-index
Forecast).  Indeed, apparently today should be an awesome day with SFI, A
and K at 126, 7 and 1.  Incidentally, I have never seen the K Index as low
as it can go - "1" today.

http://dx.qsl.net/propagation/

HTH & 73,
Richard KK6MRH

-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Michael Ryan
Sent: Monday, December 14, 2015 2:50 PM
To: [log in to unmask]
Subject: Measuring propagation

Hi all:

What's the best source for measuring propagation, K index or others?
Is there a formula to work with or if you use the K index, the lower the
better and the higher the other index the better?
I think the K is around 4 and I just listened to our locall 75M traffic net
on an online receiver based in England and signals were very strong. 1 of
the check ins reported a K index of 4 and I think the other index he
referenced was the A and it was 120 I think.LOL Also what's a good blind
friendly site where these can be tracked?

TNX and 73:
Mike DE VO1AX

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