The radio works as expected with the magnetic base antenna. However there are no instructions for the mounting of the phantom antenna. The 3/8 stud is too long for just a sheet metal roof. Start with a 3/8” hole. Remove the paint around the hole on the underneath side of the mount. You will need to add a stainless steel washer and/or a star washer under the sheet metal. At least the star washer to ensure a good ground. Discard the nylon stepped washer (used for brackets with 5/8 hole). From the topside, screw the base onto the stud. The antenna should now screw on and seal off against the sheet metal roof.
Bought to communicate with truckers during chopping. Does the job I need it to do but must use external speakers on mist noisy environments and upgrade the antenna for clearer sound.
I bought 2 tractor bundles a year ago for combine and grain cart. Had great luck with them. Very easy to install, small enough to tuck away in the cab and great clarity while talking. Just bought 2 more tractor bundles now and still happy with them.
I bought these right before we started harvest for the combine and the grain cart. They are excellent,crystal clear and have good range! Definitely recommend.