"One-way mobile radio transmitters" means radios capable of transmitting a radio signal only. The signal is tracked or located by radio telemetry or by location of an audible sound signal. The system is not capable of transmitting voice signals.
"Two-way mobile radio transmitters" means radios capable of transmitting and receiving voice messages. An example would be a CB radio or a cellular telephone.
Iowa Admin. Code r. 571-103.1