Thanks for trying. I do not believe it is a simulcast issue. With the Ohio MARCs system, it has simulcast issues but you get audio sometimes and other times it will come in clear. With the NKY system - nothing at all. I contacted Whistler and someone responded. They are going to take a look at it. Frankly, I believe it is probably a firmware issue.All scanners except the Uniden SDS100 and SDS200 frequently have problems with simulcast systems. The Unication G4 and G5 pagers also are excellent with simulcast. If the file I modified did not work, it is definitely a simulcast issue. Sorry it didn't work out better for you.