Regarding WWSB, I do get their signal but really haven't observed the signal strength on my HD200. I generally watch ABC on WFTS because their signal is much stronger than WWSB and they also have the Dolby Digital decoder, which WWSB does not have yet. I had a tour, several months ago, at WWSB's new studio, by Mike Burnham, the Chief Engineer. He's a really nice person, and they have quite an impressive operation.
As for WFLA, their signal is too unreliable, and drops out frequently, so I've resorted to watching my NBC material from Ft. Myers. I don't understand why they vary in strength, from the other Riverview located stations. Fox used to have the same problem, but they've been more stable over the last few months.
When I had my Stealth antenna up, it was at 25 feet, and I did use it with the amplifier. Actually, I still have the Stealth sitting in my attic. If you know anyone that wants to buy it, let me know. The main reason I used the Stealth, was to try to get all of the Tampa based stations. Holiday was always a challenge, and the Riverview stations came in no better than on my attic situated antenna. So I removed the Stealth , and then put up the Blonder-Tongue (at 15 ft.) for WTSP, which I mentioned in my previous post. Now all works fine, at least for me.