Strange. I have two roamios, one is hardwired, as it lives about 4 feet from the router. The other is wireless on the other side of the house, and I get anywhere between 80-95% signal strength. It's not a design fault, otherwise I wouldn't get that strong a signal. I do, however, keep the roamio on TOP of the armoire in the bedroom, as opposed to inside it. TiVo told me that it's not turned off, it still lives in the background as being "on", but not used if you had it set up then go to Ethernet. The suggestion about giving it a bad password is probably the only way to really turn it off, and even that's a hack, you're not really turning it off.