A:Answer Yes, a separate antenna and cable required.
Magnetic or permanent mount. Whip(Wilson) or rigid(Firestik)
Also depends on the following:
Type of vehicle - on or off road?
Car, truck, Suv or other??
A 9 or 18 foot cable also required, depending on mounting location(s).
If still unsure, have a friend help, or visit a good shop with questions.
They should be able to point you in the right direction and get you what you need! I may still go to a shop, to have my install checked out and adjusted if/as needed, for optimum performance.
Good luck!