Originally Posted by timedriver
Also...I saw on another forum that some folks sand or file off the coating on the back of the plate as well as inside the holes (especially the mounting hole) for a better swr reading.
Don't sand off the coating inside the antenna mounting hole, that is what the antenna needs to remain insulated from and the powder coating only helps there.
The part that needs the powder coating ground off where the antenna mount is mounted against is a a small ring around the hole on the bottom of the mount. That is so the top of the SO-239 part of the antenna mount has a good bare metal connection to the mount & thus the Jeep via the body mount's bare metal connection to the Jeep.