I bought this scanner a couple of years ago. I used radioreference to program it for my local police, fire, and rescue. I haven't used it in about a year. Took it out of the box, turned it on and I am not receiving anything. Everything is connected properly. I live in VA in Zip 22734. Fauquier and Culpeper Counties are my locals. Have they changed systems? If so, can I upgrade this scanner to receive? Ant ideas would be helpful.