Has anyone noticed any sound dropouts on channel 191 tech tv.They are occuring on both of my 301 recievers.Sometimes they are about a second but than they can last from 3-5 seconds the next time.They are occuring quite frequently like every couple of seconds to a minute.The picture is good I'm just getting audio dropouts.I don't know if it is my dish causing the problem or it is with tech tv or maybe the satellite up in space.Any info would be appreciated.