Assuming 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

Assuming 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.