Late at night when I assume the atmospheric conditions are right, I am picking up traffic on my FD (Robertsville, OH) dispatch frequency of 453.075 with a DPL of 115; the traffic is not our own. The traffic is another FD; I hear tones and units being dispatched. I have checked the database and there are no matches for both frequency and DPL; however there are a number of departments using this frequency that have no tone identified. If anyone can identify this FD, please do so. Thanks.
