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Originally posted by dainoyfb
I've been building and listening to radio equipment all of my life and I don't hear anything but regular beat frequencies here. It really sounds like he is hearing more than one transmission at a time and that is exactly what causes beat frequencies.
Originally posted by phroziac
Probably nothing. Ever use a cb radio? Police scanner? Right now theres been a lot of "skip" on cb...thats when you can bounce your signal off the ionosphere and talk to very distant people with very low power. Its caused by yhe solar cycle and varies along with sunspots and solar flares. Along with it comes all sorts of interference and strange noises.