The 'splitters' in the coach connections are really 'diplexers' (a passive device that implements frequency-domain multiplexing; 2000-era tech). The product details for these devices point out that they work for Dish. They were used by Montana to reduce wiring by 50%. They work fine with DirecTV SD antennas, but not with my DirecTV 3LNB HD antenna. I was able to reach the cabling easily from the storage bay, and re-did it to allow whatever combo's I want. I only switch between air/cable and satellite on my living area TV, so I'm going to try a coax switch there to avoid swapping connections behind the TV. The latter only takes a few seconds, and I can live with that if I have to. Is anyone aware of a diplexer that works with DirecTV 3LNB and air/cable?
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