I have a need for a wireless xmt/rcv audio video set that can work up to 100 feet through walls. Please don't ask why I need it or suggest other options. I've already eliminated them. I don't want to spend a fortune and I don't want interference with my wireless internet or my neighbor's wireless internet. The options I've seen so far are at 1.2 Ghz, 2.4Ghz, 2.5Ghz, and 5.8Ghz. The best I can tell, to go through walls at that distance I probably need at least 1 watt. Any real life experiences in this area would be greatly appreciated.