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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Lnb
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<blockquote data-quote="gameboy" data-source="post: 112125" data-attributes="member: 177511"><p>The dish, cable, LNB and receiver will all factor in the signal you receive.</p><p></p><p>LNB (low noise block) (Down converter - it converts a whole band or block of frequencies to a lower band)</p><p></p><p>They can also be rotated in their holder to adjust the Skew which may improve the signal strength. A flange type LNB has a magnetic coil polariser built in the allow this adjustment from your receiver (which must support this option). </p><p></p><p>Ideally the LNBs should match your dish so that the internal antenna of the device has it's exact focal point in the centre of your dish. If the dish and LNB are not matched you may not be getting the best from your set-up. With satellite using higher output signals (50-60 Watts) with high gain and low noise figures it is not as important as it used to be to match the LNB to the dish. If the LNB is see less of the dish that it could you will not be collecting all the signal from your dish.</p><p></p><p>If it is more it may be collecting unwanted noise from any warm object like the sky or wall behind the dish. Most LNBs are now positioned 'offset' minimising the amount of signal obscured by the older 'prime focus' LNB mounts.</p><p></p><p>The smaller the dish the more important the match is that is why the Sky mini dish comes complete with a matching LNB.</p></blockquote><p></p>
[QUOTE="gameboy, post: 112125, member: 177511"] The dish, cable, LNB and receiver will all factor in the signal you receive. LNB (low noise block) (Down converter - it converts a whole band or block of frequencies to a lower band) They can also be rotated in their holder to adjust the Skew which may improve the signal strength. A flange type LNB has a magnetic coil polariser built in the allow this adjustment from your receiver (which must support this option). Ideally the LNBs should match your dish so that the internal antenna of the device has it's exact focal point in the centre of your dish. If the dish and LNB are not matched you may not be getting the best from your set-up. With satellite using higher output signals (50-60 Watts) with high gain and low noise figures it is not as important as it used to be to match the LNB to the dish. If the LNB is see less of the dish that it could you will not be collecting all the signal from your dish. If it is more it may be collecting unwanted noise from any warm object like the sky or wall behind the dish. Most LNBs are now positioned 'offset' minimising the amount of signal obscured by the older 'prime focus' LNB mounts. The smaller the dish the more important the match is that is why the Sky mini dish comes complete with a matching LNB. [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Lnb
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