The implementation of an open-source DMR modem using Software Defined Radio (SDR), GNU Radio, and Codec2 focuses on Tier 2 conventional channels. Discussions in the comments highlight a notable interest in Tier 3 trunked channels and their applicability in both amateur and professional (commercial/government) radio contexts. Users are keen to understand integration approaches for managing control channel signals that direct the tuning of SDR frontends to specific traffic channels, thus allowing dynamic reconfiguration based on real-time communication needs. This reflects a desire for robust solutions in digital communication systems that are scalable from amateur radio use to more advanced setups that require flexibility and efficient channel management.