use tv box with av out, plus long VGA and audio cable route to your room, very messy

solution 2: if your astro box has RF out, then it is easier to route the cable, you only need single RG6 coaxial cable to carry both video and audio signal, connect to your tv box which has tv tuner built-in

solution 3: intead of tv box, can use capture card or usb capture stick with tv tuner to your computer, and view your astro via your computer