It's a VHF-low station at channel 3. The wavelength is very long. Your small antenna just isn't very sensitive to that long a wavelength. All the other channels you mention are UHF, with a much shorter wavelength.
According to this site, you can make a pair of rabbit ears work at VHF low frequencies by adding metal balls to the ends of rabbit ears - a "capacitive hat" - won't improve the tune but apparently improves the match (impedance match).
http://www.hdtvprimer.com/antennas/RabbitEars.html
What I would do ... do you have an attic or closet where you can put a larger antenna? I'd get an inexpensive all-band antenna and put it somewhere indoors, in place of the fancy amplified antenna. Maybe a 5884? You don't need an amplifier for those stations - it's not helping you.
http://www.antennacraft.net/Antennas...llChannel.html You have lots of signal in the air ... but you need a physically larger antenna to get ch. 3.