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<blockquote data-quote="2old4this" data-source="post: 18899" data-attributes="member: 174998">splitting the incoming signal is the easy part. Yes you would lose signal strength but you could insert inline signal boosters.The harder part is giving each receiver control over the LNB (and in the case of a motorised system, the dish too).&nbsp; Both receivers would be trying to send control pulses back up the coax to the LNB to switch polarisation and/or switch between high/low frequency bands. If you simply split the coax into two, I'm almsost certain that the switching would not work properly. And even if it did, you would end up with one receiver losing picture as the other receiver zapped to a channel on a transponder with a different polarisation/frequency-range.To resolve these issues, there are switching/distribution devices, which you use together with special LNBs (that provide, for example, both an H output and a V output), or with multiple LNBs.Conceptually, such a device can be thought of like this: it has typically four LNB inputs (H-low, H-high, V-low, V-high) and inputs from multiple receivers. If one receiver requests a high-band Vertically-polarised transponder, then the switching device conects the receiver to the V-high input. If a second receiver requests the same, it gets it too (and the device can boost the signal using a built-in amplifier). There is no fight for control over the LNB since the switching device always has all possible outputs from the LNB already available for piping to whoever requests them - and each connected receiver thinks it is talking directly to a standard universal LNB.2old</blockquote>

[QUOTE="2old4this, post: 18899, member: 174998"] splitting the incoming signal is the easy part. Yes you would lose signal strength but you could insert inline signal boosters. The harder part is giving each receiver control over the LNB (and in the case of a motorised system, the dish too). Both receivers would be trying to send control pulses back up the coax to the LNB to switch polarisation and/or switch between high/low frequency bands. If you simply split the coax into two, I'm almsost certain that the switching would not work properly. And even if it did, you would end up with one receiver losing picture as the other receiver zapped to a channel on a transponder with a different polarisation/frequency-range. To resolve these issues, there are switching/distribution devices, which you use together with special LNBs (that provide, for example, both an H output and a V output), or with multiple LNBs. Conceptually, such a device can be thought of like this: it has typically four LNB inputs (H-low, H-high, V-low, V-high) and inputs from multiple receivers. If one receiver requests a high-band Vertically-polarised transponder, then the switching device conects the receiver to the V-high input. If a second receiver requests the same, it gets it too (and the device can boost the signal using a built-in amplifier). There is no fight for control over the LNB since the switching device always has all possible outputs from the LNB already available for piping to whoever requests them - and each connected receiver thinks it is talking directly to a standard universal LNB. 2old [/QUOTE]

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