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Author Topic: HFU Propagation Data and Tools  (Read 1904 times)

Offline ChrisSmolinski

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HFU Propagation Data and Tools
« on: November 29, 2015, 1406 UTC »
Something experimental I am working on: http://www.hfunderground.com/propagation/

Midway down the page is a skip zone calculator.
Chris Smolinski
Westminster, MD
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Offline Skipmuck

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Re: HFU Propagation Data and Tools
« Reply #1 on: November 29, 2015, 1501 UTC »
This is absolutely awesome to have all this on one easy to access page! I'm used to checking 3 different sites just to get this info, so this is greatly appreciated...thanks Chris!
QSL's to poorbrookking >at< aol.com are greatly appreciated! All reception and postings using My radio, My antenna, and generally in real time(excluding posting of SSTV images!).
QTH:Springfield, MA
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Offline ByteBORG

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Re: HFU Propagation Data and Tools
« Reply #2 on: November 29, 2015, 1622 UTC »
Yes Chris. I echo the sentiments of Skipmuck above.
A real time saver.
Thanks for the new tool.
+ Always listening for that elusive RF...
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Offline jFarley

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Re: HFU Propagation Data and Tools
« Reply #3 on: November 29, 2015, 1924 UTC »
Great work, Chris, and extremely useful.

The fact that you have included 7 day tracking for K should be immensely helpful in predicting when there might be good props from the higher latitudes at LF; I have only been using the 3 day plot.

Low Kp is necessary for good props at LF.  Low AND steady low Kp for a couple of days seems to really help in props from the higher latitudes.  My best logging nights for high latitude Canadians were on 24-25 November, and this really jumps out in the 7 day K and 30 day A plots, and least while these are current...

Thanks!



Joe Farley, Near Chicago
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Re: HFU Propagation Data and Tools
« Reply #4 on: November 29, 2015, 2154 UTC »
Very helpful Chris,thanks!

Offline John Poet

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Re: HFU Propagation Data and Tools
« Reply #5 on: December 01, 2015, 1637 UTC »
Very nice!

Even an foF2 plot for Alpena, Michigan...

Just browsing those tables, the MUF seems to drop further, the farther north you are (at least currently)...


John Poet

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Offline jFarley

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Re: HFU Propagation Data and Tools
« Reply #6 on: December 09, 2015, 2322 UTC »
Lately, it's really incredible how quickly signals disappear as the foF2 drops.

A few months ago, there seemed to be slower gentler crashes, and it was not unusual to see some form of recovery to a degree at a later time.

It's been "now you hear me, now you don't", and that's it.
« Last Edit: December 09, 2015, 2324 UTC by jFarley »
Joe Farley, Near Chicago
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Remote Resonant Loops for HF and LF / ALA 1530
Active 60" Whip / PA0RDT
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Offline ChrisSmolinski

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Re: HFU Propagation Data and Tools
« Reply #7 on: January 07, 2016, 0042 UTC »
I spiffed up the Propagation Data and Tools page: http://www.hfunderground.com/propagation/

I organized things a little better (I hope) and added graphs of DST (thanks to jFarley for mentioning this).
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree

Offline ka1iic

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Re: HFU Propagation Data and Tools
« Reply #8 on: January 07, 2016, 1607 UTC »
Wow! Looking good Chris and thanks...

I really never got into using such things but you have peaked my interest and seeing where we have no sunspots that want to help us these days, with weak signals being the call of the day I guess it is about time for me to learn.

Thanks again Chris...
73 Vince
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Troy, Ohio. 20m Vertical & low long wire E/W, Yaesu FT-187ND, SDRplay 2, Ratt Shack 2 meter rig, and other little bits of electronics I'm not talking about, homebrewed and otherwise... so there bleech!