Technical question regarding LNB on HD PVR

[antowan]

Is it possible to have a single LNB for HD? I am not asking whether this is doable on the DSTV HD PVR.

I find it strange that you have to run two COAX cables between the decoder and LNB. Why is one COAX cable, not enough?

 

[Drake2007]

There's 2 LNB's one cable for each an AFAIK it's a pretty weak signal so any mixer would cause noise..
or something to that effect. I guess you could use one but lose the recording capability.

 

[Gadget Man]

Hi ... recently did an HD PVR installation myself and so I did lots of research. The HD PVR is 1 view, 2 record, and 1 for programming guide. Hence one needs four separate signals or a Quad LNB (four cables from dish to unit). A Twin LNB will do, but you would need a splitter inside the house (2 into four splitter). Best solution on new installation is a SATCR LNB. It has a single cable carrying the four signals to the HD PVR. It also has a second output for a 1110 decoder for dual view (i don't use this and have a single cable to my HD PVR). The SATCR LNB looks like a Twin LNB, but obviously has something inside to combine four signals down one cable. The use of the second output on the SATCR LNB is optional. Without the four input signals, the machine doesn't work. Even if you didn't want to record, just view 1 and 1 for programming, it doesn't work. Hope this helps ...

 

[ToxicBunny]

The reason for the 2 cables, is the Twin LNB is able to get the horizontal polarized channels and the vertical polarized channels (or something along those lines)

 

[Smurfatefrog]

Using 1 cable will get you all the channels, you just wont be able to record and view the TV guide/program info/time

I moved yesterday so thats what i have at the moment, gonna do the full instal later today