WHCN is a Class B FM station, a classification permitted to transmit with up to 50,000 watts ERP (Effective Radiated Power) at a HAAT (Height Above Average Terrain) of 150 meters. Because WHCN's HAAT is 264 meters, it is limited to an ERP of 16,000 watts, in order to maintain an equivalent coverage area. Its signal is radiated using a directional pattern, with the maximum sent toward Hartford at 30° azimuth. It is reduced in other directions, and weakest toward the southwest, at 190° and 230° azimuth. This is done to avoid interference with WQXR-FM, also on 105.9 MHz, whose transmitter site is in New York City. In those directions, the signal is .45 of full power, or 7,200 watts; WQXR operates with reduced power (610 watts at 416 meters) to avoid interfering with WHCN.