I've been thru this before and wound up selling the dish for 118.7. It's a low output sat and it takes a large dish to do it. It is a large LNB I doubt that it will even fit on the 500 and it just isn't a big enuff dish. It would cost you more to buy the LNB and try to get it going than have them come out and install it for you. Since you have 110/119/129 you will need the DPP 44 to be able to keep all the sats you have now plus add 118.7. Do yourself a favor & reduce your frustration. Get E* to do it, that way if there are problems you can get them back out to fix it.