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Kymmy · 25-10-2009, 15:45

Diplexers are great for using one cable to transport multiple frequencies, as cable uses below 900Mhz and sat uses 900-1200Mhz then yes a diplexer might sound ideal, but you will come unstuck on four points...

1# Sat cable have a DC voltage on them for powering and also polarity switching of the LNB there are specialist diplexers out there that can cope with the voltage but not many do it well.
2# If you buy or later upgrade to a freesat PVR then you'll need at least dual cable for the twin LNB and in that instance a diplexer can't help
3# Cable is bidirectional and a diplexer will effect the signal levels for both TV and broadband
4# It's against VM's Terms&conditions to mess around with the cable system in this way.

25-10-2009, 15:45	#2
Kymmy Inactive Join Date: Dec 2007 Posts: 18,398	Re: Freesat self install Diplexers are great for using one cable to transport multiple frequencies, as cable uses below 900Mhz and sat uses 900-1200Mhz then yes a diplexer might sound ideal, but you will come unstuck on four points... 1# Sat cable have a DC voltage on them for powering and also polarity switching of the LNB there are specialist diplexers out there that can cope with the voltage but not many do it well. 2# If you buy or later upgrade to a freesat PVR then you'll need at least dual cable for the twin LNB and in that instance a diplexer can't help 3# Cable is bidirectional and a diplexer will effect the signal levels for both TV and broadband 4# It's against VM's Terms&conditions to mess around with the cable system in this way.