...WHDI, however, is camped out in a chunk of unlicensed 5GHz spectrum just like 802.11n Wi-Fi, meaning it must be able to tolerate the reasonable levels of interference only from other devices that use the same frequencies, and can broadcast at higher power levels than UWB – enough for a range of "over 100 feet." WirelessHD, a third major spec also funded by Samsung and Sony, plus Panasonic, Toshiba, LG and NEC, uses the 60GHz band, and apparently has problems unless the transmitter and receiver are within line-of-sight.