I've seen rigs with as many as 4 exterior coax inputs, many only have a single exterior coax input which is what we have on our TT. Although there is a sticker directly above our exterior coax input that states satellite ready, lo and behold when we connected our satellite dish to it our sat receiver said no signal found. The reason was a splitter in the loop that doesn't allow sat signal to pass while cable tv signal continues unhindered to the interior coax output. Not a big deal as we performed a quick 10 minute mod that allows us to use our sat dish without issue though our single exterior coax input. The second exterior coax input which is dedicated to satellite tv runs directly to the interior coax output where sat receiver is connected without loss of signal.