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<blockquote data-quote="nelson_b" data-source="post: 938704" data-attributes="member: 296628">Hi - Thanks&nbsp; for&nbsp; your&nbsp; interest&nbsp; and comment C.H.Do&nbsp; you&nbsp; know&nbsp; what&nbsp; age&nbsp; this old&nbsp; beast&nbsp; could&nbsp; be ?&nbsp; ... the&nbsp; mount&nbsp; is very&nbsp; heavy duty&nbsp; and&nbsp; very basic. it has&nbsp; no adjustment&nbsp; for declination.Indeed&nbsp; when&nbsp; i put&nbsp; the&nbsp; petals&nbsp; together&nbsp; i was done on the&nbsp; yard in front of the dish&nbsp; which is not 100 per cent&nbsp; level - and the dish was notably buckled.&nbsp; so&nbsp; i tilted it&nbsp; right back until it was horizontal&nbsp; a loosened&nbsp; &nbsp; all the bolts&nbsp;&nbsp; and&nbsp; shook all the petals&nbsp; to settle&nbsp; them, and tightened&nbsp; them again ... much improved,&nbsp; but&nbsp; still not true&nbsp; when i put strings across it.on studying the dish and&nbsp; mount etc,&nbsp; i noticed that&nbsp; the&nbsp; bracket (see pics)&nbsp; that&nbsp; holds the dish&nbsp; to the mount is slightly curved and&nbsp; has elongated holes&nbsp; to allow&nbsp; some&nbsp; adjustment - which pushes or pulls 1/4 section&nbsp; of the dish adjustment of one of these got the dish true.<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=":)" />next issue&nbsp; was the button hook type l.n.b.support&nbsp; which was hanging&nbsp; slightly&nbsp; low&nbsp; and&nbsp; to one side so i,v fitted stay&nbsp; wires&nbsp; from the support ,&nbsp; with small turnbuckles at the rear to adjust, to get dead center......Quite&nbsp; a bit&nbsp; of trial&nbsp; and error to&nbsp; find&nbsp; the&nbsp; l.n.b. &quot;sweet spot &quot;&nbsp;&nbsp; but got there&nbsp; eventually.so&nbsp; i,v probably&nbsp; got it up&nbsp; to&nbsp; its best performance&nbsp; level <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=":)" />But&nbsp; she&nbsp; is&nbsp; an&nbsp; old dish ...... and&nbsp; if&nbsp; i run the palm of my hand across the&nbsp; petals&nbsp; i can feel very slight imperfections where the support&nbsp; ribs&nbsp; are,&nbsp; and one&nbsp; panel has&nbsp; had a slight repair&nbsp; ..&nbsp; so&nbsp; i,m sure&nbsp; some&nbsp; performance&nbsp; will be lost over this ? <img src="https://www.satellites.co.uk/styles/default/xenforo/smilies/sad.png"&nbsp; class="smilie" loading="lazy" alt=":(" title="Sad&nbsp; &nbsp; :(" data-shortname=":(" />A very brief&nbsp; test one evening on bbc world transponder&nbsp; 1 west&nbsp;&nbsp; with a k/u l.n.b&nbsp; showed it&nbsp; to be&nbsp;&nbsp; only marginally&nbsp; better than the 1.8 channel master.&nbsp;&nbsp; probably designed purely as a C band dish by the look of the old button hook l.n.b holder&nbsp; which&nbsp; i had&nbsp; to cut&nbsp; up a little to get a modern C band l.n.b. to fit and position correctly.[ATTACH]82451[/ATTACH] [ATTACH]82452[/ATTACH] [ATTACH]82453[/ATTACH] [ATTACH]82454[/ATTACH]</blockquote>

[QUOTE="nelson_b, post: 938704, member: 296628"] Hi - Thanks for your interest and comment C.H. Do you know what age this old beast could be ? ... the mount is very heavy duty and very basic. it has no adjustment for declination. Indeed when i put the petals together i was done on the yard in front of the dish which is not 100 per cent level - and the dish was notably buckled. so i tilted it right back until it was horizontal a loosened all the bolts and shook all the petals to settle them, and tightened them again ... much improved, but still not true when i put strings across it. on studying the dish and mount etc, i noticed that the bracket (see pics) that holds the dish to the mount is slightly curved and has elongated holes to allow some adjustment - which pushes or pulls 1/4 section of the dish adjustment of one of these got the dish true.:) next issue was the button hook type l.n.b.support which was hanging slightly low and to one side so i,v fitted stay wires from the support , with small turnbuckles at the rear to adjust, to get dead center...... Quite a bit of trial and error to find the l.n.b. "sweet spot " but got there eventually. so i,v probably got it up to its best performance level :) But she is an old dish ...... and if i run the palm of my hand across the petals i can feel very slight imperfections where the support ribs are, and one panel has had a slight repair .. so i,m sure some performance will be lost over this ? :( A very brief test one evening on bbc world transponder 1 west with a k/u l.n.b showed it to be only marginally better than the 1.8 channel master. probably designed purely as a C band dish by the look of the old button hook l.n.b holder which i had to cut up a little to get a modern C band l.n.b. to fit and position correctly. [ATTACH]82451[/ATTACH] [ATTACH]82452[/ATTACH] [ATTACH]82453[/ATTACH] [ATTACH]82454[/ATTACH] [/QUOTE]

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