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Satellite TV receivers & systems support forums
Multi-receiver/TV systems - Domestic only
Splitter questions ?
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<blockquote data-quote="PaulR" data-source="post: 202431" data-attributes="member: 176256"><p>The Ku band of 10.7GHz to 12.7GHz is very wide (2 GHz) and satellite uners can't tune all the way across in one sweep so they do it in 2 goes.</p><p></p><p>The band is split roughly into 2 and the LNB has 2 different oscillator frequencies to cover the required bandwidth. On univeral LNBs they are 9.75GHz and 10.6GHz which, when mixed with the required Ku band frequencies, convert them down to between 1GHz and 2GHz - well actually just a bit wider than that.</p><p></p><p>The LNB switches from the lower oscillating frequency to the higher one when the receiver sends a 22KHz signal up the cable. Lack of 22KHz signal (or signal all the time) can be a ause of reception problem on just the high or low bad while leaving the other half untroubled.</p></blockquote><p></p>
[QUOTE="PaulR, post: 202431, member: 176256"] The Ku band of 10.7GHz to 12.7GHz is very wide (2 GHz) and satellite uners can't tune all the way across in one sweep so they do it in 2 goes. The band is split roughly into 2 and the LNB has 2 different oscillator frequencies to cover the required bandwidth. On univeral LNBs they are 9.75GHz and 10.6GHz which, when mixed with the required Ku band frequencies, convert them down to between 1GHz and 2GHz - well actually just a bit wider than that. The LNB switches from the lower oscillating frequency to the higher one when the receiver sends a 22KHz signal up the cable. Lack of 22KHz signal (or signal all the time) can be a ause of reception problem on just the high or low bad while leaving the other half untroubled. [/QUOTE]
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Multi-receiver/TV systems - Domestic only
Splitter questions ?
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