My friends are asking me to set them up with a Linux Satellite, however there is a slight issue in that their current setup is as follows:

Official sky box is in the lounge with a RF output from the box to the TV in the conservatory, the TV in the conservatory has a Sky Remote which allows changing channels on the Sky box in the lounge.

I believe that the Sky box in the lounge has an RF output back outside the house and back in to the TV in the conservatory.

My question is how can I replicate the same setup but using a Linux Satellite box in place of the Sky box in the lounge ?

I was wanting to use an Xtrend ET8500 but I notice that the receiver does not have an RF out, only HDMI & Composite.

Any ideas or advice would be much appreciated.