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<blockquote data-quote="Huevos" data-source="post: 703615" data-attributes="member: 301161">I'm going to post this here because it could be relevant.I went to a job today. The guy had changed from a Sharp single LNB with a built in feedhorn to an Invacom twin and one of those adjustable feedhorns. Signal was miles down on what it should have been and miles down on the Sharp so obviously an LNB related problem. Anyway after trying a couple of new LNBs and the problem still persisting I changed the feedhorn to the one everyone here uses, and bingo normal signal level appeared. Anyway physically comparing the adjustable feedhorn to the one that cured the problem the bore is completely different and the scalar ring design is completely different. I put the adjustable back on and tried again (as per the instructions and in various other positions) but I wasn't clever enough to get it to perform anywhere near the way a regular one performs. Dish was a 1.8m and with that feedhorn Astra 2D reception was impossible. With the regular feedhorn I was getting 9.6dB MER which is normally good for 24 hour reception except in very heavy rain.</blockquote>

[QUOTE="Huevos, post: 703615, member: 301161"] I'm going to post this here because it could be relevant. I went to a job today. The guy had changed from a Sharp single LNB with a built in feedhorn to an Invacom twin and one of those adjustable feedhorns. Signal was miles down on what it should have been and miles down on the Sharp so obviously an LNB related problem. Anyway after trying a couple of new LNBs and the problem still persisting I changed the feedhorn to the one everyone here uses, and bingo normal signal level appeared. Anyway physically comparing the adjustable feedhorn to the one that cured the problem the bore is completely different and the scalar ring design is completely different. I put the adjustable back on and tried again (as per the instructions and in various other positions) but I wasn't clever enough to get it to perform anywhere near the way a regular one performs. Dish was a 1.8m and with that feedhorn Astra 2D reception was impossible. With the regular feedhorn I was getting 9.6dB MER which is normally good for 24 hour reception except in very heavy rain. [/QUOTE]

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