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Message: <blockquote data-quote="John" data-source="post: 1135405" data-attributes="member: 175005"><p>Using the picture as a reference, and assuming the OMT itself is not motorised - the AV-Comm poloriser will be in a fixed position, usually with the wording to the side and the internal 'steps' running vertically and the scalar ring attached to the front of the barrel. The OMT will be inserted into the poloriser barrel with one port at the top and the other port 90deg to the side with identical lnb's attached - this configuration will give you H / V pol only.  Rotating the same OMT 45deg within the fixed poloriser barrel will give you LHC /RHC polorisation obtainable from the lnb's.</p></blockquote><p></p>