Just an update since my posts in March. There has been alot of ENC system tech transmissions on ID: 40 and also alot of ENC on ID: 700 (couldn't find this one in the database though). The only other talk groups heard in the last two months was some ENC traffic on ID: 116 (BCA Tac 5 from DB) and, actually some voice transmissions yesterday on ID: 2298 (which shows Health East Dakota Co Dispatch). Not sure why that TG would have been heard off of the Duluth site but it was (did hear units 43, 44, 45 go en route, arrive destination, etc...dispatch told one to post St. Paul). As far as additional frequencies I did hear them briefly putting control channel data on the following:852.4625,853.050,853.3875, 852.3875, and 851.9375). For a brief time this morning CC info was on 853.3875 but that was only for a couple of minutes and it is now back on 852.8875. Anyway, I thought I would pass it on, I have been keeping an ear to changes and tg's heard but it is still early on up here from the sounds of it. There may have been more times of activity but I just don't listen too often. Thanks