3 ms·
If they could make skywave propagation work consistently between two fixed locations at >30MHz, I would be very surprised. The lower bands are the ones that wor
by jcalvinowens 3y ago
If they could make skywave propagation work consistently between two fixed locations at >30MHz, I would be very surprised. The lower bands are the ones that work well (particularly 3-14MHz at this point in the solar cycle).
Yes, you can get sporadic skywave as high as 50MHz sometimes... but it's really random and unreliable. They call it the "magic band" for a reason.
- nullc 3y agoEhh.. How much power are you imagining? Scatter propagation at 50 MHz is more consistent than sporadic-E just very weak (and calls for some particular modulation techniques due to path characteristics). And through much of the year you do get a window of sporadic-E pretty much every day.
- jcalvinowens 3y agoAssuming the path is NYC-London or Chicago-London... it's just too far north to work in winter. Even at night in the summer, I'd bet against it. To some extent we can debate what "consistently" means... if like these guys, you have ~10KW of power with beam antennas the size of trucks on both ends, you can probably approach the reliability of a submarine cable (albeit at incomprehensibly narrower bandwidth). Low VHF propagation will have significant periods of unavailability in comparison, no matter how much power you use.