As everyone knows the antenna connector is hard to get to on the back of the radio. So I had several company 2 meter radio's laying around with their antenna connection made with about 6 inch coax cable with a connector for a pl 259 on the end. To make it short I took that off that radio and installed it on my Anytone 6666pro. Now it is so easy to connect anything to the antenna. For those wondering if it changed my SWR any it did not change the SWR.