Digital Mobile Radio (DMR)

Digital Mobile Radio (DMR) is a Digital Communications mode used primarily on UHF and sometimes VHF that uses technology called TDMA (Time Division Multiple Access) to to split a 12.5 KHz radio channel in half by time. This means that two conversations can be going on on a single channel simultaneously and not interfere with each other.

Links

 * (DMR-MARC)DMR-Motorola Amateur Radio Club World Wide Network
 * Radioreference.com Wiki on DMR
 * Amateur Radio Guide to Digital Mobile Radio(DMR)by John S. Burningham, W2XAB