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Sky Digital BSkyB, Freesat & Saorsat support forum
Sky & Freesat fringe reception
INVACOM 0.3db LNB in Gran Canaria
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<blockquote data-quote="Corrigapp" data-source="post: 99500" data-attributes="member: 390950"><p>@ likvid @ iceman</p><p></p><p>Thanks for your input guys.</p><p></p><p>Having checked over my LNB/feed very carefully, I can tell you that the waveguide apertures in the LNB and feed are lined up exactly. I entered this thread regarding the position of 4 of the screw holes not matching in the interface between the LNB and feed. It would seem there must be more than one type of CM feedhorn. On my rig, the screws at 12, 3, 6 and 9 o'clock match up with no problem. But that leaves the other holes at approximately 2, 4, 8 and 10 o'clock out of true. What you can see in my previous picture is probably an 'optical illusion' of some sort.</p><p></p><p>I also enclose a picture of the CM polar rotator which came along with the feedhorn. It shows how the screw holes are arranged so that they will match up with the feedhorn perfectly. If you look closely, you will see that the holes that should have been at 2 and 10 o'clock are slightly closer to the 12 o'clock hole and the ones that should have been at 4 and 8 o'clock are slightly closer to the 6 o'clock hole. I say 'should' in the sense in order to match the holes on the Invacom and MTI LNBs perfectly.</p><p></p><p>Corrigap</p></blockquote><p></p>
[QUOTE="Corrigapp, post: 99500, member: 390950"] @ likvid @ iceman Thanks for your input guys. Having checked over my LNB/feed very carefully, I can tell you that the waveguide apertures in the LNB and feed are lined up exactly. I entered this thread regarding the position of 4 of the screw holes not matching in the interface between the LNB and feed. It would seem there must be more than one type of CM feedhorn. On my rig, the screws at 12, 3, 6 and 9 o'clock match up with no problem. But that leaves the other holes at approximately 2, 4, 8 and 10 o'clock out of true. What you can see in my previous picture is probably an 'optical illusion' of some sort. I also enclose a picture of the CM polar rotator which came along with the feedhorn. It shows how the screw holes are arranged so that they will match up with the feedhorn perfectly. If you look closely, you will see that the holes that should have been at 2 and 10 o'clock are slightly closer to the 12 o'clock hole and the ones that should have been at 4 and 8 o'clock are slightly closer to the 6 o'clock hole. I say 'should' in the sense in order to match the holes on the Invacom and MTI LNBs perfectly. Corrigap [/QUOTE]
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Sky Digital BSkyB, Freesat & Saorsat support forum
Sky & Freesat fringe reception
INVACOM 0.3db LNB in Gran Canaria
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