Home Patrol Not Picking Up Local PD

I am a new owner of a Uniden Home Patrol scanner and I have a question. I live in a small town and I can see the local PD tower from where I live but I can't pick it up with scanner. The freq is programmed in it correctly but it will not pick it up. I can pick everything else up in my county but not local PD. I have other uniden scanners and vertex radios and they pick it up great. I am just wondering if there is something that I am missing. Any help would be great. Oh and it's an analog freq if you was wondering. Thanks