Fun with Grey Lines

It's so much fun when the propagation physics works out in amateur radio. The last few days, the little Rockmite 20 meter radio de KD0FNR has caught the grey line to canada, and the immediately been seen nowhere again until the sun completely up about two hours later. Here's what the gang and I have seen while watching the Reverse Beacon Network while calling CQ.

On Mondy, the Rockmite was heard as the grey line crossed the spotting station in Canada

I should point out again, that no, we're not in Nebraska, we just freuqently get aliased from KD0FNR to KD0F.

Then, today we hit the grey line on both sides, first as it passed by us:

And then one last time as it passed by the spotting station about 10 minutes later:

And then, just as the day before, nothing for a few more hours:

The above picture was taken just now when I'm writing this up now, so please ignore the picture's grey line, but do look at the time stamps between the last Canada spot, VE6JY and the first Arizona spot, K07K. (Also, we used to be in New York years ago, but now we're in San Francisco.)

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