Using this Clear - Com CEL - TA antenna is straightforward. First, make sure you have your own compatible power supply as it's not included. Connect the antenna to your device according to the device's instructions. When using it, keep in mind that the tops of the antennas are missing, so handle them carefully to avoid any further damage. As for maintenance, regularly check the connections to ensure they're secure. If the performance seems to decline, inspect the antenna for any new signs of wear. Store it in a dry and cool place when not in use to extend its lifespan.