The TMMBNC Mobile Mount consists of
a mag mount base with a BNC connector and cable with another
connector. This combination will allow you to take an
existing rubber duck or other BNC stand alone antenna and
place it on the outside of your vehicle, thus turning the
antenna into a true mobile installation.
Hand-Held antennas work much better when
operating on the outside of the vehicle rather than trying to
pick up signals from within the vehicle.