They do work very well on small systems without much traffic. However, when larger systems are involved they aren't so great. As Bud said, they DO NOT track control channel data.My TRX 1 and 2 Radios do track DMR and NXDN here, and are my "Go to" radios for these systems.
(setting aside the implied insult) I guess I could reply that Unidents work good for someone who only wants to download the RR database and "listen to muh cops"?I own a TRX1 and TRX2 they work good for someone that does not understand Trunking RF setup.
I use mine until I get the system figured out then my Unidens run circles around TRX scanners.