a radar detector is used with a radio link , the radio link characterized by high duty factor operation of a radio transmitter . the radar detector is located a sufficient distance from the radio transmitter that the radar detector is not overwhelmed by the radio transmission signal in that channel and can detect sufficiently low level radar signals to ascertain potential radio interference at the radar from said radio transmitter . the results of the radar detection are communicated to the transmitter in a way that impacts the transmitter &# 39 ; s use of the sensed channel . this communication can occur reactively when a radar detection is achieved and / or can be a periodic or event - driven indication that the channel is available for operation .