P.S. We thought an update to this Blog might be in order. Since we archive our Blogs it is not uncommon for an older Blog, such as this one, to pop up when someone is doing a generic search on a particular topic such as "problems with digital radios". Since our original comments, and those of others; we can sum up the current situation in 2010 to say that there can be a problem with high noise levels when using digital radios that may be a little worse than an analog. The technical reasons are unimportant. The issue is to address, and correct the problem as much as possible. Here is an easy and quick fix that is being used by a number of fire departments all over the USA.
While on the scene, operate your radios in the analog mode. Since all digital radios have dual mode analog and digital capability, this solution is easy and affordable - just switch to an analog TAC channel and your problems are over. Life does not have to be complicated.....