The following are the different digital modes being used the the Durham Region area. Some of the repeaters are in multi-mode, where different modes are available in addition to regular FM voice.

DMR – Digital Mobile Radio

DMR, or Digital Mobile Radio, is explained in more detail, via my Amateur Radio DMR page.

NXDN – Next Generation Digital Narrowband

The NXDN (Next Generation Digital Narrowband) common air interface protocol, which was developed jointly by ICOM and Kenwood, uses Frequency Division Multiple Access (FDMA), employing a 4-level FSK modulation scheme. These companies and others together form the NXDN Forum.

Kenwood’s brand for NXDN equipment is “NEXEDGE”, while Icom’s brand for NXDN equipment is “IDAS”, or Icom Digital Advanced System.

NXDN Repeaters

The following NXDN repeaters are available in the Durham Region area:

Still under construction.