you think of a two way radio, you normally think about a handheld unit.
There are units that you can sit on a desk or table top that work just
like a handheld unit, but they aren't mobile. These are often called
station two way radios
Desktop base station radios use wall AC power and they have a
built-in antenna, but this antenna may be disconnected and then
connected to cable that leads to an external-mounted antenna. The higher
the antenna is mounted, the better the range.
These base station radios won't have all the same features as
handheld unit, but they don't need features like Emergency Call and
other similar features that handheld units offer. They usually just
offer basic communication, however one available unit enables you to
send a 2-tone signal that can be used to activate an electronic lock on
a door or gate.
You could still use these radios in a vehicle by using a 12-volt car
adapter cable that some base station manufacturers offer.