A memory system includes a memory controller that writes data to and reads data from a memory device. Upon receiving a signal from a base station, a controller within the WCD detects one or more channel conditions of a radio frequency environment between the base station and the WCD. The output is related to an input state of the first digital input in the absence of the condition-sensed signal and assumes an override state in the presence of the condition-sensed signal. The radiopharmaceutical precursor is converted to a radiopharmaceutical compound in one step involving cleavage of the alkenyl-tin bond and incorporation of a radioisotope to form the radiopharmaceutical compound.