Check out the frequencies of most wireless mics and the vast majority are usually 900mhz or higher. This would not be a problem. 900mhz was selected several years ago because it has a very short range and extremely clean signal quality, plus very little chance of outside interference.
------------------ Travlin' Easy
PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)