New time vs distance report for newbies

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km4udx's picture
Last seen: 1 month 3 weeks ago
Joined: 2017/12/02 - 14:32
New time vs distance report for newbies

We all know that time of day drives band performance, well I knew that because I read and memorized it. Being late to the amateur radio game, I admit that I didn't have strong "hands on actual knowledge" of that point. So. Phil at to the rescue. He made a new report shows time vs distance!

See chart called "Distance vs time of day" at

So, us newbies can actually see when a band goes long, and when not. And we can validate that this phenomena happens night after nigh! Who knew? (yes you can make fun of me all you want...clueless here!).

I took the data from this report, which is perfectly usable as is, and turned it into a line graph. Then it just pops. We can now see, for our own QTH/rig/antenna, what is happening as the clock turns. I could look at this for hours (well minutes anyway) and marvel at the way cool physics behind this.

It is one thing to know this effect happens, and another to know when it happens for you.

Here is a link (if this works) to a pic of the chart.

You can see when 80m opens, then closes while 40 is ascending/falling, then 20m ditto, and poor 17/10 do what they can. Now I know when to expect what when I "work" (means fumble) on these bands at what time of day. Soooo COOOOL. Yes there are space maps and propagation forecast sites, etc. But this is no forecast, this is just what is happening to you. Where you are. With your gear.

Many thanks to Phill for his wonderful work helping us all understand the mysteries of propagation, as well as our on equipment and practices.