If you just want to listen to Yadkin Sheriff, EMS, and Fire dispatch, something like a Uniden BC125AT or BCT15X will work fine as all of these utilize the VHF frequencies listed in the database. Any non-digital scanner will work. However, if you want to listen to NCSHP, the Yadkin Co VIPER TGs (which are infrequently used), or surrounding counties (Iredell, Forsyth, Surry), you'll need a digital scanner such as a Uniden BCD 436/536, 996. You can certainly purchase a SDS 100 or 200, but there are cheaper options, even if you want to listen to VIPER. In other words, it all depends on what you want to hear.