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<blockquote data-quote="nelson_b" data-source="post: 1166292" data-attributes="member: 296628">Thank&nbsp; you john ... indeed the puzzle&nbsp; continues ... the probes&nbsp; in the l.n.b. looked good when&nbsp; i split&nbsp; it&nbsp; from the feed&nbsp; to&nbsp; insert a plate ( i dont&nbsp; want&nbsp; to remove&nbsp; the sealed cap&nbsp; on the feed ) and&nbsp; yes&nbsp; i was very&nbsp; careful to set&nbsp; the&nbsp; plate in relation&nbsp; to the probes .i just - out&nbsp; of interest&nbsp; skewed&nbsp; the whole&nbsp; l.n.b. and feed assembly by 45 degrees to see if it&nbsp; made any difference&nbsp; to the problem frequencies ... but&nbsp; i could&nbsp; not see any notable difference .. it slightly reduced&nbsp; the signal on a couple&nbsp; of the weaker non problem ones.My next&nbsp; move&nbsp; when&nbsp; i get the time&nbsp; ...&nbsp; is&nbsp; to swap&nbsp; the&nbsp; l.n.b. - i have&nbsp; spare Invacom quad, and&nbsp; Ivacom single C120,s and&nbsp; also an Inverto. one .That&nbsp; i lock&nbsp; any circular k/u frequencies from well outside&nbsp; official footprint is - i think -&nbsp; pretty remarkable, even with a large 2.4 dish .... to have&nbsp; to check both polarities is not&nbsp; much&nbsp; of an issue to be honest .. just a puzzle why it occurs on just a small number of the&nbsp; frequencies .&nbsp;&nbsp; Never&nbsp; had&nbsp; this issue&nbsp; with any circular transponders in C band on the F15 receiver.My ambition over the weekend&nbsp; was&nbsp; to lock something FTA that&nbsp; i could&nbsp; view from these Russian transponders ..&nbsp; i succeeded i guess,&nbsp; but&nbsp; a little disappointed&nbsp; that&nbsp; it was only a - testcard - and&nbsp; three shopping&nbsp; channels&nbsp; <img src="https://www.satellites.co.uk/styles/default/xenforo/smilies/smile.png"&nbsp; class="smilie" loading="lazy" alt=":)" title="Smile&nbsp; &nbsp; :)" data-shortname=":)" /></blockquote>

[QUOTE="nelson_b, post: 1166292, member: 296628"] Thank you john ... indeed the puzzle continues ... the probes in the l.n.b. looked good when i split it from the feed to insert a plate ( i dont want to remove the sealed cap on the feed ) and yes i was very careful to set the plate in relation to the probes . i just - out of interest skewed the whole l.n.b. and feed assembly by 45 degrees to see if it made any difference to the problem frequencies ... but i could not see any notable difference .. it slightly reduced the signal on a couple of the weaker non problem ones. My next move when i get the time ... is to swap the l.n.b. - i have spare Invacom quad, and Ivacom single C120,s and also an Inverto. one . That i lock any circular k/u frequencies from well outside official footprint is - i think - pretty remarkable, even with a large 2.4 dish .... to have to check both polarities is not much of an issue to be honest .. just a puzzle why it occurs on just a small number of the frequencies . Never had this issue with any circular transponders in C band on the F15 receiver. My ambition over the weekend was to lock something FTA that i could view from these Russian transponders .. i succeeded i guess, but a little disappointed that it was only a - testcard - and three shopping channels :) [/QUOTE]

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