Mobile CB.

For use in a vehicle, you should have:
 - CB radio.
 - Antenna.
 - SWR meter.

If you are using a CB radio in a truck that has a 24volt system, you should also have:
 - Voltage dropper.

As they may not be sold as part of the antenna, you may also need to get:
 - Antenna mount.
 - Coax.

If you are using more than one CB, with just one antenna, you could use:
 - Antenna switch.

If you use your CB radio in a vehicle and want to run both CB and radio from one antenna, you could use the following:
 - Antenna splitter.

Optional Antenna accessories that may be available include:
 - Antenna ring, Antenna light, Antenna matcher.

For mobile use, there are other Microphones available, such as noise cancelling types.