Hardmask compositions having antireflective properties useful in lithographic processes, methods of using the same, and semiconductor devices fabricated by such methods, are provided. It is determined by a base station or other transmitter employing an antenna array that transmission of at least a first downlink signal will generate a co-channel or inter-channel ghost signal at at least one location that may be susceptible to such ghost signal. In another embodiment the present invention encompasses the use of ETHER and salts thereof to prepare debrometravirine and salts thereof. User perceived quality of voice data is derived from the at least one objective measurement. At least one second member is movably coupled to a first side of the first member and movable toward and away from the side of the movable member, and a bias source biases the second member in a direction away from the first member.