I think from talking to other people (especially hams) we have come to the conclusion that it is the Erie Police Department that is testing out DTRS radios. I catch them on the Sunset (Longmont) DTRS stie quite often, but typically in the evenings. I had posted a month or two back about this topic, and have considered updating that thread. I felt bad because I kind of bad mouthed (not on purpose) the conventional system that Boulder County uses, talking about a "hum" I hear on it. It seems like since they went to narrow band, there is very little of the hum, except on certain conventional radios where there is like a chunk noise, and a bit of a hum along with the audio. Its only from a few units out in the field. They do indeed have a very good system, and have all the Green channel (Sheriffs Dispatch) repeaters linked, as they do with the Red channel (fire dispatch) repeaters. I have listened to Boulder County a lot more recently. I think they sound good on both systems. The DTRS patch isn't always caught on the Longmont site, but I assume those radios typically associate with mead, or another site. What site do you hear them on?