I did this last year with the Seagram’s Live tour. 24 cities and 24 different clubs. I use 2.4GHZ transmitters and receivers from Markertek fed the signals into a Tricaster from NewTek and outputed wireless signals to a stage projector and several plasmas located around the venues.
Of course line of sight is important for transmitterws and receivers but it was done very successfully.
E-mail me offline for complete details
Stephen Jackson
RoaDDoggZ productions
http://www.roaddoggz.com