Bonjour everybody, a bit late, but allow me to come back on the messages from A.Brown & R.Terwilliger on the subject. The described method works no doubt for a fixed dish, I mean aimed to 1 satellite, but I doubt it works for a motorized dish. I have installed many motorized systems in the past, in the beginning according the prescriptions of the manufacturer, which is a very time consuming method, several hours, & later by my own method, 10 minutes. The main problem is finding true south for the location. To succeed, 5 things have to be considered: 1. the angle of the mast as compared to the earth must be exactly 90 degrees 2. true south must be found 3. the dish elevation angle 4. the dish declination angle 5. the correct azimuth If the 4 first points are correct & the dish has a good polar mount, the dish will follow the Clarks belt while turning. To find true south, I use the satellites themselves, I live longitude 4 east, so in my region I have to find Sirius 4 east, so I program the sat receiver with a free to air program from that satellite; then I adjust the declination angle on the polar mount, - these values can be found in tables for all the latitudes f.i. 6.61degrees for lat.50- then I turn with the motor the dish to a exact horizontal position, adjust the elevation, again according tables, and turn the whole assembly slowly around the mast till reception of the channel. Eventually, fine adjust the elevation, then thighten all the nuts & the job is done. Let it be said that with a analog program, it is easier, as you see the picture appear, while for a digital program, depending the brand of the receiver, one has to use the bargraph picture which is on one of the menu's on the set. I have done this many, many times, allways with the same speedy result. Final remark, the apertures of a 80 to 90 cm dish are about 2 degrees, this allows to beam in on a sat slightly of course, I mean not exactly on your longitude, if this is the case, one must after finding the sat, retune the horizontallity of the dish and slightly turn all back . By this method, the dish is exactly horizontal when looking at the top of the Clarks belt. Regards, Walter +50 42 - 4 33
-
