Implementing a critical communications network often has issues and challenges that need overcoming. Implementing one in an environment that is particularly hostile to radio coverage is further challenging as it can present coverage blackspots for radio communication. For instance, typical operations could involve groups of people communicating in particularly narrow gorges, shallow caves or relatively small buildings.
A Simoco 600 / 700 series DMR radio terminal (mobile or portable) with the Single Frequency Repeater (SFR) feature enabled will repeat on slot 2 traffic received on slot 1. The DMR radio terminal essentially serves as a single frequency DMO repeater.