I've been fooling around with the built in tuner on my TV and I noticed that stations start to breakup (Similar to DBS with the pixelation etc..) I went out side and moved my antenna around (I can see the TV from the antenna) until my local CBS didn't breakup anymore. It worked fine but I switched channels and the other locals broadcasting in HD broke up a bit. I know with analog I had to turn the antenna towards each transmitter. Is this the same thing with HD?