I own both of these scanners. They have the same frequencies stored in them with the exception of the trunking frequencies. One day I was monitoring with both of them on. I noticed that the 84 was picking things up the 97 wasnt. For instance; DuComm Fire East and West will come in clearer on the 84 then the 97. Also I seem not to get anything from CFD or CPD on the 97, but it will come in clear as day on the 84. I am in DuPage county. I have tried adjusting the squelch but nothing happens. Both scanners are stock.