I’ve never had an issue with it on my sds100. It’s one of my preset trunks that I listen to occasionallyUniden scanners can normally do Tier III but the Hytera system has something that prevents the Unidens from working. Give it a try.
The Avon Site is using DSDPlus:
463.51250 LSN 2165 CC
451.37500 LSN 223
452.15000 LSN 347
452.85000 LSN 459
Figure out the Uniden LCNs and program it up.