My son-in-law recently purchased some apartments. In one of the vacant apartments was some Dish equipment left behind by previous tenant. There were 2 Dish 522 & 1 510 receivers along with the remotes. I know nothing about Dish equipment. I was thinking of giving them to another family member who has been thinking about switching from cable. I was also told that these may belong to Dish and were leased by the tenant. Is there any way to check this out? If in fact they do belong to Dish, how do I return them. The tenant had apparently skipped out owing some rent so nothing would surprise me.