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Author Topic: Ionograms for Newbies  (Read 1154 times)

bandarr3000

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Ionograms for Newbies
« on: August 05, 2017, 0200 UTC »
Can I use a single ionogram to determine propagation conditions between two points?  If so, would I use the one nearest me, or the one nearest the source?  

EDIT: In other words, what does a single ionogram tell me about propagation conditions?  I live in Michigan, so I look at the ionograms out of the Alpena station.
« Last Edit: August 05, 2017, 0201 UTC by bandarr3000 »
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Offline redhat

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Re: Ionograms for Newbies
« Reply #1 on: August 05, 2017, 0247 UTC »
A single Ionogram from a site near you will only tell you about NVIS propagation, or propagation from your location, straight (or nearly so) up, and to a point a few hundred miles around you.  Propagation varies widely, and tools such as voacap can give you an idea of what to expect between two points, or the probability of reception from your point to the rest of the globe verses time and frequency.

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bandarr3000

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Re: Ionograms for Newbies
« Reply #2 on: August 05, 2017, 0420 UTC »
Good to know.  Thank you.
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