DMR
Digital Mobile Radio
DMR was originally designed by ETSI for commercial applications. This is evident in the user interface where numbers are used in lieu of call signs. DMR modulates with 4FSK, indicating that it uses 4 frequencies (compared to D-Star with 2 frequencies). This allows to double the data rate to 9600 bit/s. The higher rate allows the transmission of 2 channels at the same time (2 time slots).
There are multiple DMR networks available:
The DMR Plus network is developed and operated by the DMR Plus team,
The DMR-MARC network is developed and operated by the Motorola Amateur Radio Club.
DMR Austria provides a great deal of info about current DMR usage, even though it is not in English, you will find it interesting.
The Brandmeister network was developed and operated by a team of Russian developers.
The University of Minnesota has taken over management of K4USD, please see K4USD Network (umn.edu) or K4USD Network (umn.edu). The previous owner, John Burningham W2XAB, is now a SK.
DMR, DMR Plus Dashboard, xReflector.net for DMR, Fusion, and D-Star!,
Naples FL – Local DMR Repeater: AB4NP
PROGRAMMING DMR Radios
Programming any DMR radio can be a daunting task. Review the following links for a basic introduction to programming the Hytera radio using the CPS software.
Download the CPS Software (zipfile) – The installation password is “D78V70602112HAMEM5C00”
Download DMR Programming Guide
PDF Document – Using Hytera CPS Programming Software
YouTube Video – Using CPS Programming Software
Amateur Radio Guide to Digital Mobile Radio
CODEPLUGS
The following codeplugs are generic and intended to get you started. You should always keep a copy of your original and your last WORKING code plug to fall back on.
For ARASWF Hytera generic CodePlug (click here).