Airband-specific antennas for a casual scanner user: worth it?

I should preface this post by saying I'm not much of a radio/RF guy, I'm an airplane guy. Forgive me for what will probably be a string of dumb questions.

I recently bought a used BC125AT so I could listen to local air traffic. It works ok, but the reception of radio traffic isn't great from inside my apartment and the transmissions I receive cut in and out, but its much better if I'm right by the airport so I don't think its an issue with the scanner itself. I'm wondering if getting an...

Airband-specific antennas for a casual scanner user: worth it?