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Satellite TV receivers & systems support forums
Multi-receiver/TV systems - Domestic only
twin output lnb schematic
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<blockquote data-quote="ralphmagno" data-source="post: 750186" data-attributes="member: 189146"><p>hello, a twin lnb is like a single and multiswitch in one.</p><p>it has 2 lo inside ,one runs at 9.750 ghz and the other runs at 10.6 ghz.</p><p>as the signal comes from the satellite there is a horz and vert pol . the signal is amplifies and then the lo signal is injected.</p><p>it then passes through a band pass filter and amplified several times again.</p><p>the frequency is from 10.700 ghz to 11.700ghz lower band and 11.701 to 12.700 ghz.upper band.</p><p>each output is independent of each other.</p><p>the satellite receiver sends out a dc voltage and a tone.</p><p>14 v dc vert</p><p>18 v dc horz</p><p>14 v dc +22 khz vert upper band</p><p>18 v dc +22 khz horz upper band.</p><p></p><p>if your lnb is broke the chances you can repair it is very slim.</p><p>its best to buy a new one.</p><p>ralph</p></blockquote><p></p>
[QUOTE="ralphmagno, post: 750186, member: 189146"] hello, a twin lnb is like a single and multiswitch in one. it has 2 lo inside ,one runs at 9.750 ghz and the other runs at 10.6 ghz. as the signal comes from the satellite there is a horz and vert pol . the signal is amplifies and then the lo signal is injected. it then passes through a band pass filter and amplified several times again. the frequency is from 10.700 ghz to 11.700ghz lower band and 11.701 to 12.700 ghz.upper band. each output is independent of each other. the satellite receiver sends out a dc voltage and a tone. 14 v dc vert 18 v dc horz 14 v dc +22 khz vert upper band 18 v dc +22 khz horz upper band. if your lnb is broke the chances you can repair it is very slim. its best to buy a new one. ralph [/QUOTE]
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Multi-receiver/TV systems - Domestic only
twin output lnb schematic
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