re #3851 et seq concerning splitters
I use a multi-switch instead of splitters like this one. It's got 3 inputs, so 1 each for H & V LNB, and one for UHF if you have terrestrial. It's got 4 outputs, so you can connect your 3 cards, and one over for another decoder. Assuming it's like the one I've got, it looks after the power and LNB switching. It uses the switching voltage from the card to cause a connection to the V or H LNB as appropriate. So you can have any combination of cards requesting H or V, and it connects them to the right LNB and sends the right switching voltage. If you only have Freeview, you can just connect the H LNB, otherwise you need 2 LNBs or one that has 2 independent ports. The UHF input is muxed with all the outputs. This is a 3 x 4 switch, mine is 3 x 8, and there are others!
As for signal quality, if you've got MP running, you can tune to a channel, select the context menus and scroll down to number 8 Tuning Details, which has all sorts of data including signal strength and quality.
I use a multi-switch instead of splitters like this one. It's got 3 inputs, so 1 each for H & V LNB, and one for UHF if you have terrestrial. It's got 4 outputs, so you can connect your 3 cards, and one over for another decoder. Assuming it's like the one I've got, it looks after the power and LNB switching. It uses the switching voltage from the card to cause a connection to the V or H LNB as appropriate. So you can have any combination of cards requesting H or V, and it connects them to the right LNB and sends the right switching voltage. If you only have Freeview, you can just connect the H LNB, otherwise you need 2 LNBs or one that has 2 independent ports. The UHF input is muxed with all the outputs. This is a 3 x 4 switch, mine is 3 x 8, and there are others!
As for signal quality, if you've got MP running, you can tune to a channel, select the context menus and scroll down to number 8 Tuning Details, which has all sorts of data including signal strength and quality.