Despite my decades of electro mechanical experience. Having problems wrapping my head round all the technicalities not only accessing local GMRS repeater but after 5 mos with new midland mxt400 base and more than suitable matching antennae 30' off ground have not been able to get one radio signal check? Reading on line/ mxt400 manual and speaking W Midland tech service results in no help/ results. The base and the midland handhelds communicate 100% fine between ea. other. Currently prepping for tech Lic for ameteur radio & purchased a Yaseu 3dr HT. . Not sure where to turn for reliable info. No one wants to talk on the phone anymore. everything is "Fill out the form' "Email our tech service reps" becomes a very long drawn out process.