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dxAce wrote:
"Carter, K8VT" wrote: SeeingEyeD0g wrote: Frequency: 1.8kHz to about 1.9kHz That is just above the MW (AM) broadcast band! So expect propagation characteristics to be best during night time hours with possible interesting propagation occurring within the half hours before and after your local sunset and sunrise times. Also known as "gray line propagation", when the terminator passes over your location. And yes, it really does work. I qso'ed Hawaii from Michigan on 160 a few times via gray line... At what time would both Hawaii and Michigan be on the grey line? And your point is??? They both don't have to be. Please see the real propagation experts quoted below (not some humbug from a blathering, self-appointed "ace" poseur). Especially take note of the final sentence of the second quote. The gray line is not a simple north/south line running around the globe from pole to pole across the equator; rather, it presents numerous east/west possibilities. and from another big gun low band propagation expert: Some authors have stated that gray line propagation always occurs along the terminator. On the low bands, there has been only occasional proof of such propagation. Rather, propagation is through the dark zone, on a path that (in most cases) is nearly perpendicular to the terminator. Gray line propagation on the low bands is a different affair from what is often called gray line propagation on the (higher) HF bands, where the propagation path does follow the direction of the gray line. Also, your mileage figure is about 700 miles short (not that it makes any difference, mechanism-wise; it just shows a further lack of research on your part). So, two items were discussed: mileage and mechanism--and you struck out on both. Some "ace" you are... :-( Now be a good boggle boy and finish your homework... |
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