Multimode DMR Repeater The HDR100 Repeater is engineered for years of reliable performance. This multimode conventional repeater provides digital (DMR) and analog signaling. While in digital DMR mode the HDR100 operates in a 2-slot TDMA format on 12.5 kHz channels to provide 6.25 kHz equivalent efficiency. In analog mode the repeater operates in a 12.5 kHz FDMA format. The digital and analog modes of operation are compliant with the FCC 2013 Narrowband mandate.