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I've had good luck with the AT9 by mounting an lnb so its face is at a distance of 17.5 inches from the AT9 dish surface. I start with the lnb aiming at a point about 0.5 to 1 inch below the top dish mounting bolts (a bit below the center point of the dish). The adjustable lnb mounts available from sponsors or on ebay work well - they have a good amount of adjustment front to back plus rotation for skew), and the bracket can be carefully bent to aim higher or lower on the dish surface. I drill a single hole at a point 1 7/8" from the end of the arm (after removing the original lnb's) and use a single bolt to attach the lnb bracket through a length of slotted DIN rail to the arm. This allows side lnb's to be easily placed for satellites 4 to 8 degrees off center. The photos show a couple of these dishes. I've been happy with these dishes, and I have used one successfully for AMC1 on a dish aimed at 97 with a side lnb aimed at 103.
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Coolsat 6000; 3 DTV AT-9 dishes (83, 97, 103, 123, 129); DN500 dish for 110 and 119 (NASA, etc);
Dayton Video agile frequency modulator; Next Generation remote extender |