Speaking the world with a multi band DC short skyloops antenna and 100 watts, many times we will hear things a yagi will not, why? I do not need to turn the antenna, noise S/N is better, here we just choose a different feed line ( relays on the antenna ) on the sky loop and ,,,,,,walla ( lobes goes somewhere else in a flick on a switch ) . It is very common to have 10M open at night time with Europe booming in. Since putting the sky loops up , all the big yagis and rotators came down ( and sold ).