Got Directv's 18x24 plus dish and the Channel Master Stealth antenna installed. Running 2 pairs of RG6 cables from the dish and an extra 5th RG6 coaxial cable from the antenna output into JVI's powered 5x8 multiswitch. All the outputs from the multiswitch going into each receiver/tv/vcr have diplexers for satellite and VHF/UHF. The satellite picture looks great on all receivers, but the OTA is horrible. Snow, ghosting, some higher VHF and all the UHF channels don't show at all. Without the antenna connection going into the switch, it looks alot better, but not perfect. Do I need a preamplifier connected before the antenna input goes into the switch? Should I have gotten a better antenna than the Stealth? I live 5 miles from the NYC in the burbs and I have the antenna mounted high on the roof next to the dish using Wineguard's antenna mounting kit. I have rotated the antenna 360 degrees and still get a bad picture through the switch. Any ideas or suggestions? I assume that if the regular analog channels look this bad, OTA HDTV is out of the question.