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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Correct LNB Skew Value
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<blockquote data-quote="SMRGroup" data-source="post: 119824" data-attributes="member: 193928"><p>Folks,</p><p></p><p>I've got eight LNBs on my dish, which itself has a 4° skew to match the arc of the various satellites (at the moment I'm receiving Astra 1/2 at 19.2°E around to Atlantic Bird 2/Telecom 2D at 8.0°W). The skew for each was set using a stand-alone meter and the quality fine-tuned using the meter in a spare receiver, I basically turned each LNB to achieve the best signal quality.</p><p></p><p>Measured using a small inclinometer, Astra 1/2 has a skew of about -12° and Atlantic Bird 2 about +35°. I decided to fine-tune using the values given by the Satlex calculator only to find most of them are miles off...</p><p></p><p>The closest is Astra 1/2, for my location Satlex says it should be -15.74°, but the futher west I go the more error there is - for Atlantic Bird 2 Satlex reckons the skew should be +3.81°, which is about 31° difference!</p><p></p><p>If I move the LNB to the given values, the signal strength and quality both fall off considerably (quality drops from ~80% to 25% on Atlantic Bird 2 which means I would probably lose the signal on a rainy day).</p><p></p><p>So I'm wondering what gives? Perhaps I'm interpreting the Satlex figures incorrectly? Any pointers would be appreciated.</p></blockquote><p></p>
[QUOTE="SMRGroup, post: 119824, member: 193928"] Folks, I've got eight LNBs on my dish, which itself has a 4° skew to match the arc of the various satellites (at the moment I'm receiving Astra 1/2 at 19.2°E around to Atlantic Bird 2/Telecom 2D at 8.0°W). The skew for each was set using a stand-alone meter and the quality fine-tuned using the meter in a spare receiver, I basically turned each LNB to achieve the best signal quality. Measured using a small inclinometer, Astra 1/2 has a skew of about -12° and Atlantic Bird 2 about +35°. I decided to fine-tune using the values given by the Satlex calculator only to find most of them are miles off... The closest is Astra 1/2, for my location Satlex says it should be -15.74°, but the futher west I go the more error there is - for Atlantic Bird 2 Satlex reckons the skew should be +3.81°, which is about 31° difference! If I move the LNB to the given values, the signal strength and quality both fall off considerably (quality drops from ~80% to 25% on Atlantic Bird 2 which means I would probably lose the signal on a rainy day). So I'm wondering what gives? Perhaps I'm interpreting the Satlex figures incorrectly? Any pointers would be appreciated. [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Correct LNB Skew Value
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