> On 160 m and 80 m, one kind of weird delayed propagation is the ducted > one, where signals travel along magnetic field lines into space and > back, but it is very rare.
And on second thought, since Matt was hearing static crashes with delay between his two receivers - one imaginative explanation could be that they are statics originating as lightning from the Southern hemisphere travelling both in the ionosphere (direct) and on a magnetic field line (delayed). Each of his two antennas could have mainly picked up just one of them. Such static crashes are responsible for whistlers at much lower frequencies (kHz - audible frequencies). The delay difference would be half of the range I indicated for magnetic field line propagation, i.e. 70 ms and up, depending on the location. Well, I don't know how credible or frequent this could be, but I think there is a remote possibility for such phenomena. -- Sverre F/LA3ZA _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
