I bought a Pro 70 handheld scanner on ebay and everything seems to work fine. It performs all it's functions like it is supposed to do but I cannot pick up anything on the air. I reinitialized it and put in my local freqs and it scans them fine. If I turn Squelch off I get your standard radio noise. I changed antennas and it made no difference. I have a desktop scanner I am using at the same time and it picks up traffic just fine but not my handheld. It says in the manual that it is a line of sight scanner so I took it with me in the car and still nothing. I even drove around with the squelch off but I get no reception. Any suggestions on this problem?