No, it certainly doesn't mean that. It's *good*, in fact. These three
KDKA-DT 2.1 CBS PITTSBURGH PA 191° 13.0 25
WPGH-DT 53.1 FOX PITTSBURGH PA 188° 12.9 43
WPXI-DT 11.1 NBC PITTSBURGH PA 188° 15.1 48
should be easy. They're certainly within range of indoor antennas and they're in the same direction. If you MUST receive that FMN station, it's not good. The other station is just another FOX Network station.
Worst case you might need to mount the antenna in an attic, for example. That's where mine is located. Radio Shack has a smaller outdoor antenna, model 15-2160, that only costs $24 that might work too. At less than 15 miles, attic-mounting an indoor or outdoor antenna is certainly an option that could work very well.