The PD3 series of radios are an ideal digital upgrade path.
Migration to digital is a snap, due to the PD3 being capable of analogue, digital and mixed mode.
All Hytera digital two way radios are capable of analogue and digital, so allow an easy migration from analogue to digital. (No need to replace the whole fleet in one fell swoop.) The PD4 series are vailable in UHF and VHF.