A homebrew and open source DMR modem has been developed using LimeSDR, GNU Radio, and Codec2.The project utilizes Codec2, an entirely open source alternative to proprietary hardware devices or encumbered codecs like mbelib.The DMR modem is a proof-of-concept that reuses the MMDVMHost code for the data link layer.This development provides an open source solution for ham radio operators interested in DMR technology.