Rogers Cable Feed Inquiry

[JOHN_GALLAGHER]

We have two TVs. TV1 is downstairs and TV2 is upstairs.

The Rogers cable comes into our house and connects to a splitter.
From there, two cables leave the splitter. One goes upstairs and
the other goes downstairs.

TV1 connects to a CAV10455HD box. (Receiver with built-in PVR)
TV2 connects to a CAV10242HD box. (Receiver only)

The PVR is shared by both TVs.
How does the PVR inside the CAV10455HP box
communicate with the CAV10242HD receiver box ?

[57]

Your boxes communicate via the RF-Coax.  This setup is usually called "Whole Home PVR". When this was installed, probably quite a few years ago, there is usually a filter at the demarcation point where the coax comes into your home to preclude the signals "getting out" of your home and causing interference in other nearby homes.  This is the case for "Classic Digital Cable". 

Most people are now on Xfinity (IPTV) and that works totally differently with recordings being done "in the cloud" and each box/TV drawing from the cloud with no actual PVR in the home.

[Pauly · Accepted solution]

the signal travels backwards to the main splitter back into one of the output ports, then it goes out the other output port back to your other set top box.  The signal also potentially travels out of the cable input port and potentially back into the cable network due to how RF signals work, but there is almost always a filter installed on the in port of your catv splitter so the signal stays within your home.