Both of my antennas are on different masts and, for that matter, on differents sides of the house; one points toward the north and the other toward the south. The A/B switch is only attached to one set so it's no big deal. Plus, most of the time I watch the DC locals (get PG date through Dish) and I have the RIC antenna running into the built-in tuner on each HDTV. It would be nice if the 942 had two 8-VSB tuners, but such is life. Although each situation is unique, conventional wisdom dictates that combining two antenna with a simple Y connector is a bad idea. However, in my case, almost all channels for both DC and Richmond VA, came through loud and clear - just a few notches down on the signal strength meter. The only problem was a powerful DC CBS station became less than 100% reliable and a few of the marginal stations from DC, Baltimore MD and Charlottesville VA disappeared. My surprise was that I received 85% of all stations by joining both antenna with a simple Y connector. Multipath issues? You bet! But it worked.