Over the summer, I've been thinking about and exchanging e-mails with various people about 'metallic bursts' of signals at 50MHz. Superficially similar to meteor reflections, there are a few potential problems with this explanation.
|Reflectors of radio, natural and man-made.|
It may well be that this is a geometric effect, in that when I listen across the long distance of the Atlantic, I am 'looking' through a much larger volume of space, and thus have a greater chance of hearing meteor bursts.
But then, if this is the explanation, why do I not always hear such bursts when listening transatlantic? Why do I not hear these bursts, if they are meteor-induced, at all times of the year? Even without a discrete meteor shower, there are plenty of sporadic meteors to create paths if the 'longer path length' idea was correct.
I'm not trying to say that there is something spectacularly new to discover here. But there are parts of the story that make no sense at the moment. There are alternative explanations to meteor reflections as to why long distance signals might undergo the kind this kind of 'burst' propagation.
So, if you have any 50MHz capability over the coming three weeks or so, please do record any unusual periods of these 'metallic bursts'. If you do, please record the audio using your digimodes software, and not something like HRD; this is to provide time synchronisation so that the signals can be decoded later.