I purchased a Hughes Satellite Internet Dish without the LNB arm at a garage sale for $10. It is a .74M dish measuring about 34" by 28" with a 2 3/8" skewable mount. I am planning to "southern engineer" a LNB arm. Does anyone have one of these; any ideas as to where I can get a PDF manual for this dish? I'm looking for the length of the arm from the face of the dish and how high up does the LNB mount from this arm. Of course this dish was used to receive and transmit...I'm only looking to use it for reception. Thanks.