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Satellite TV receivers & systems support forums
Multi-receiver/TV systems - Domestic only
wire it all up correctly with a quad lnb ???
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<blockquote data-quote="shumifan50" data-source="post: 647631" data-attributes="member: 265778"><p>Some things to understand about LNBs:</p><p>1. A LNB is 'programmed' by an STB to receive a specific channel off a specific tansponder. If you loop through to a second tuner (in the same or different STBs, and then try to receive different channels on the two tuners, it might or might not work depending on how the channels share relevant tuning characteristics on the LNB. This means that sometimes the second channel will fail to tune in properly. The aim should always be to connect each tuner to its own LNB. Multi-LNBs can help to achieve this without an additional dish. </p><p></p><p>HOWEVER</p><p></p><p>2. Multi-LNBs also have restrictions. They typically share common voltage rails, and when connected to multiple tuners can sometimes suffer from interference between the different LNBs. I have found that the official HD receiver in the UK causes huge interference with the other LNBs connected to the same multi-LNB. So also be aware of this.</p><p></p><p>3. The correct and failsafe way to connect multiple tuners to a single dish, with multiple LNBs pointing at multiple satellites, is to install a multiswitch, but these are really expensive. They isloate each LNB and ensure continuous power (as I understand it) to all LNBs. These devices are really high quality diseqc switches. See this link:</p><p>_http://www.satellitesuperstore.com/multiswitch.htm for examples.</p></blockquote><p></p>
[QUOTE="shumifan50, post: 647631, member: 265778"] Some things to understand about LNBs: 1. A LNB is 'programmed' by an STB to receive a specific channel off a specific tansponder. If you loop through to a second tuner (in the same or different STBs, and then try to receive different channels on the two tuners, it might or might not work depending on how the channels share relevant tuning characteristics on the LNB. This means that sometimes the second channel will fail to tune in properly. The aim should always be to connect each tuner to its own LNB. Multi-LNBs can help to achieve this without an additional dish. HOWEVER 2. Multi-LNBs also have restrictions. They typically share common voltage rails, and when connected to multiple tuners can sometimes suffer from interference between the different LNBs. I have found that the official HD receiver in the UK causes huge interference with the other LNBs connected to the same multi-LNB. So also be aware of this. 3. The correct and failsafe way to connect multiple tuners to a single dish, with multiple LNBs pointing at multiple satellites, is to install a multiswitch, but these are really expensive. They isloate each LNB and ensure continuous power (as I understand it) to all LNBs. These devices are really high quality diseqc switches. See this link: _http://www.satellitesuperstore.com/multiswitch.htm for examples. [/QUOTE]
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Satellite TV receivers & systems support forums
Multi-receiver/TV systems - Domestic only
wire it all up correctly with a quad lnb ???
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