Quoting Michael Hawkins <[EMAIL PROTECTED]>: > "What" was the question. Perhaps there's a good reason I don't go south of > the border (besides most of south of the border coming north). If its > sub-audible, I would assume that they're picking it up on a spectrum analyzer > or some form of test equipment as compared to ears? >
It's hearable with the ears, Mike, and you hear them regularly, not just on exotic DX, graveyard channels are notorious for them. It's the whoosh whoosh whoosh sound (how's that for a scientific elucidation?) that you hear when two stations on a channel are not at exactly the same frequency. If they're separated by one Hertz, the repetition rate on the whooshing will be once a second etc. Of course, by 20 or so Hertz separation, you've got a growl which is truly audible. Pretty sure there is stuff in the IRCA reprints on this, "Yes, SAH" by Glenn Hauser, springs to mind. best wishes, Nick _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
