I have been out of touch with scanners for years. I came across and bought a used Radio Shack Pro-2051 triple trunking scanner. Gheez! what a nightmare. I tried to enter in Marion County Fla sheriff, fire, etc 800mhz trunking frequency's but dont hear anything at all. I have no idea if this scanner will even listen to the broadcast's. Will it? I have called several Radio Shack store's and all they tell me is if it is a truck tracker it will work. Do I keep it or list it on Ebay cause it ain't what I need for this area?