Trx1 does in fact on spectrum sweeper pick up dmr simplex and single slots and single slot uplinks and everything else. Doesn't rely on rf capture or need longer than tdma 30ms like uniden. It's simply high speed limit search in the bands you select so if a mic is in use no matter how short the frequency gets picked up. Road trips all over country with both radios and whistler never failed. Used repeater reverse or frequency offset guide to find outputs. Keep zeromatic on for exact frequency