lundi 15 septembre 2014

FM radio fade at traffic lights

I think everyone has got to have experienced this. I'm sitting at a red light, and the FM radio station I'm listening to sometimes fades and becomes static-y. I inch up a bit, and it comes back full. Then I inch up again, and it starts to fade.



Yet driving down the highway, it sounds solid.



Why does this happen? Is the antenna somehow out of phase when you're in a certain fixed position? Or am I feeling the full effect of reflected signals when I'm stopped?




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