Sioux Falls PD uses PD west and PD East TG's. Minnesota is the dividing line, so with downtown Minnesota runs down the west side of it, so most downtown traffic is going to be on east side PD TG. As for the central talk group...hmmm, never heard anything on it but it is very interesting that there are radios turned onto it. Wonder what it is used for?What talkgroup is used for downtown traffic? Thanks.