Neil, great explanation of "shotgun" topology, and the purpose of the "arrowhead". Most people I know think the arrowhead indicates the directionality of interconnects caused by the grainular structure of the conductor. You have cleared it up.
Phono stage picking up radio signals?
The strangest thing happened this evening. I just hooked up my Whest phono stage and as I was letting it warm up I turned up the volume slightly to check the noise level and noticed a strange noise coming from the speakers. At first I thought it was a ground loop hum or some feedback, but when I put my ear to the speaker I distinctly heard music. I turned up the volume a bit and to my surprise I could hear and identify the song playing, followed shortly after by DJ banter. It was obvious I was picking up a radio station, but I don't have a tuner or any other radio device in the home. Can anyone give me a clue as to what might be going on.