Reply to thread

Message

<blockquote data-quote="clausius" data-source="post: 337943" data-attributes="member: 248624">For what i know the status you mention belongs to a kind of &quot;old age&quot; of sat-tv.Nowadays LNBs feed the entire frequency range (not divided any more into high or low, which was the case of 4 output LNBs).The only thing that is still splitted (for physical reasons: same frequency signals would interfere on the same cable) is the polarization.In fact the only signal a decoder sends to the LNB is a voltage spanning from 14v to 18v; this tension provides both power to operate and polarization selection to the LNB.Now the theory behind all this is:if you got dual LNBs and one half is operated in Vpol and the other in Hpol, all the available signals are available on the two coax cables.So an opportune circuit can mix them up and make them available at decoder's choice.This is advertised on this site _http://www.starlink-dss.com/multiswitch.htmas well as on many others like these_http://www.broadbandutopia.com/viddis.html _http://www.hometech.com/learn/dss.html</blockquote>

[QUOTE="clausius, post: 337943, member: 248624"] For what i know the status you mention belongs to a kind of "old age" of sat-tv. Nowadays LNBs feed the entire frequency range (not divided any more into high or low, which was the case of 4 output LNBs). The only thing that is still splitted (for physical reasons: same frequency signals would interfere on the same cable) is the polarization. In fact the only signal a decoder sends to the LNB is a voltage spanning from 14v to 18v; this tension provides both power to operate and polarization selection to the LNB. Now the theory behind all this is: if you got dual LNBs and one half is operated in Vpol and the other in Hpol, all the available signals are available on the two coax cables. So an opportune circuit can mix them up and make them available at decoder's choice. This is advertised on this site _http://www.starlink-dss.com/multiswitch.htm as well as on many others like these _http://www.broadbandutopia.com/viddis.html _http://www.hometech.com/learn/dss.html [/QUOTE]

Verification