Technical Topics > Propagation
Grey line map (real time)
Traveling Wave:
Not the best but PSK reporter is useful...https://pskreporter.info/pskmap.html
Matt285:
Thanks for all the feedback.
BoomboxDX:
--- Quote from: NJQA on January 21, 2020, 1056 UTC ---
--- Quote from: BoomboxDX on January 21, 2020, 0234 UTC ---I use one of the online ones. A solar propagation site has one that works.
http://www.spacew.com/www/realtime.php
--- End quote ---
While the grayline may be correct, don’t be fooled by the rest of the data at the map link above. It has been a long time since we have seen a SSN of 86.
--- End quote ---
"SSN"? I don't even see a reference to an SSN (whatever that is) on the page anywhere. It has the grey line, radio auroral zones, and MUFs delineated and mentioned, and that's about it.
And I've found the grey line useful, as well as the auroral radio zone demarcation (the green lines at the top of the map). And -- for the most part -- I've found them accurate enough for SWLing.
NJQA:
--- Quote from: BoomboxDX on February 04, 2020, 0423 UTC ---
--- Quote from: NJQA on January 21, 2020, 1056 UTC ---
--- Quote from: BoomboxDX on January 21, 2020, 0234 UTC ---I use one of the online ones. A solar propagation site has one that works.
http://www.spacew.com/www/realtime.php
--- End quote ---
While the grayline may be correct, don’t be fooled by the rest of the data at the map link above. It has been a long time since we have seen a SSN of 86.
--- End quote ---
"SSN"? I don't even see a reference to an SSN (whatever that is) on the page anywhere. It has the grey line, radio auroral zones, and MUFs delineated and mentioned, and that's about it.
--- End quote ---
If you look at the graphic, there is a black bar at the bottom where they show the Smoothed Sunspot Number (SSN), which is used to calculate the MUF.
The true current value is on the order of “5” or so. You can tell that they are using the wrong number because the MUF values the graphic has are unreasonably high. A SSN value of 86 would have been reasonable 5 years ago - not today.
You can find better numbers for SSN here:
https://www.sws.bom.gov.au/Solar/1/6
BoomboxDX:
^^^^^ Fair enough, thanks for the explanation.
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