Whats the difference between radars with one and two antennas?
Many in-car radars are capable of utilizing two antennas however only one can be used at a time. Future models may allow both to be used simultaneously. With a dual setup the operator can select which antenna to use thereby making operation a little more versatile than with a single antenna. Typically one antenna is mounted on the dash pointing forward and the second antenna is mounted on the rear deck pointing aft.