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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Mounting a wavefrontier t90
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<blockquote data-quote="a33" data-source="post: 1075608" data-attributes="member: 332642"><p>Following this line of thinking, you would get better reception of an <strong>offset mounted LNB</strong> on a 90cm dish, than on a 2 meter dish.</p><p>That is not the case.</p><p>The 'opening angle' of a dish, to which you are referring, is the opening angle <strong>in one direction</strong>. That opening angle is there for ALL direction, also for offset-aimed directions.</p><p>So the aiming must be done more precise, and the possible misplacement effect (by possible non-optimal distance between the feeds of the monoblock) is higher on a bigger dish.</p><p></p><p>Of course offset mounted LNBs (at an angle to the axis of symmetry) on a paraboloid dish suffer abberations, due to the position not at the angle of symmetry. But the bigger the size of the dish, the better the reception; also for offset mounted LNBs! <img src="https://www.satellites.co.uk/styles/default/xenforo/smilies/smile.png" class="smilie" loading="lazy" alt=":)" title="Smile :)" data-shortname=":)" /></p><p></p><p>Greetz,</p><p>A33</p></blockquote><p></p>
[QUOTE="a33, post: 1075608, member: 332642"] Following this line of thinking, you would get better reception of an [B]offset mounted LNB[/B] on a 90cm dish, than on a 2 meter dish. That is not the case. The 'opening angle' of a dish, to which you are referring, is the opening angle [B]in one direction[/B]. That opening angle is there for ALL direction, also for offset-aimed directions. So the aiming must be done more precise, and the possible misplacement effect (by possible non-optimal distance between the feeds of the monoblock) is higher on a bigger dish. Of course offset mounted LNBs (at an angle to the axis of symmetry) on a paraboloid dish suffer abberations, due to the position not at the angle of symmetry. But the bigger the size of the dish, the better the reception; also for offset mounted LNBs! :) Greetz, A33 [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Mounting a wavefrontier t90
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