I've seen shady radio shops set people up on FRS/GMRS frequencies illegally, if this is a random repeater you've found and not one you know personally. My favorite was a FedEx hub operating a repeater on the FRS frequencies with a range of like 15 miles or more to cover their warehouse. F-bombs day and night constantly, just shocking crap you'd hear. They thought they had a private channel, meanwhile they were splattering all over FRS. Needless to say the FCC paid them a visit and got them on business band literally overnight. They had a STA grant the very next day for a business pair and their FRS repeater went silent. Not sure if they were fined, but the visit was effective.