I'm located about halfway between Orlando and Tampa's signals and have tried using an indoor antenna to get the over-the-air signals. Being around 40+ miles away though, it's a crap-shoot at best, and reliability suffers. We'll be watching a CSI or a CRIMINAL MINDS on WKMG in Orlando and at a critical point, the signal will just drop out for a second or two.
Orlando has just one main VHF signal - WESH 2 which is RF 11. I've never, EVER even gotten a sniff of that signal on an indoor antenna, even with exact measuring of the dipoles.
Tampa has a number of VHF signals, WFLA 8 on RF 7, WTSP 10 on RF 10, and WTVT 13 on RF 12 being the three main network affiliates. Oddly, 8 and 10 I have received on a nothing-fancy set of dipoles attached to a loop for UHF. They don't come in reliably at all, but I HAVE at least seen them on occasion. But that WESH from Orlando is still among the missing on anything indoors.
I had an installer put a nice, big Winegard antenna up in our attic, and with some fiddling, he was able to get me WESH 2 on a semi-reliable basis - but it winks in and out. Oddly, he supposedly pointed the thing up toward the Bitho signals in Orlando, but whenever I switch to that antenna, I fairly reliable also pick up WFLA 8 and WTSP 10 - and sometimes WTVT 13. I must be picking those up on the back end of the antenna as the orientation at my house has the Tampa signals exactly 180° from the Orlando signals.
Oh - and before WTSP moved their antenna a year or so ago to the Riverview site, it was not ever receivable here. Now it comes in much better, if still not reliable on the indoor antenna.