There is no document specific to WCDMA Third Party Repeater .Found a document on Avaya 3920 Repeater which also does not provide this information.It says- To find the best location for the repeater, you need to determine the base station's coverage area. Stand near the base and make a call. Walk away from the base with the handset, and make a note where the signal becomes weaker. The optimum location for the repeater is as far from the base as possible while still maintaining a “good” signal, or just inside the location where the signal became weaker.