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Digital Mobile Radio

The DMR-MARC Worldwide Network

The DMR-MARC network is an all-digital group of over 200 MOTOTRBO DMR repeaters in 18 countries with over 65,000 users. They are all amateur radio operators, many of whom are Motorola Solutions employees, Motorola Service Station employees, dealers, system installers, and Motorola equipment aficionados.

All repeaters on their network are connected all the time. TRBO radios have great voice quality, great coverage, and extended battery life all in LESS THAN 1/3 the channel bandwidth of a traditional analog FM repeater with TWICE as many voice channels! Their mission is to offer you a reliable and scalable choice in connectivity: local, regional, national, and international. Isn't time you upgraded to digital radio's cutting edge?


DCI MotoTRBO IPSC Amateur Radio Group

Our mission is to connect to and converse with the wider DMR Ham community by openly sharing our network resources and talkgroups to enable dynamic connections to all radio amateur DMR groups.

Our focus is to learn more about and experiment with, IPSC, c-Bridge implementation and 3rd party networking options compatible with MotoTRBO IPSC networking. You only need a DMR capable user radio but you must use or have access to a Motorola MotoTRBO repeater.


The North Carolina PRN system is a fully digital UHF repeater system that utilizes an ETSI Standard called Digital Mobile Radio, or DMR. Their repeaters are linked full time to create a wide-area repeater system that covers parts of Virginia, North Carolina and South Carolina. They also utilize on-demand linking that allows a user to connect with others around the world. Each of their repeaters are able to support two voice conversations at the same time. So, while a user in Raleigh, NC is talking to a user in Columbia, SC, another user can be talking to someone across town or across the state.


In early 2014, I purchased two Connect Systems CS700 digital radios and joined up with the North Carolina PRN network. In mid-2017 I purchased a Motorola UHF 5550 mobile radio with the Handheld Control Head for installation in my Chevy Cruze. I have now also purchased an additional CS700, a Motorola XPR7550e, a SL7550 and SL7550e plus a SL3500 for travel.

I can be contacted on the NC-PRN network (usually monitoring the local talkgroup on the Wilkesboro DMR repeater) or on my Brandmeister hotspot as radio ID 3137120 / AB1JU.

NC-PRN DMR Codeplug for the CS700 DMR Radio

This codeplug contains all known repeaters in the NCPRN system for the Connect Systems CS700 radio - this includes North Carolina, South Carolina, Virginia, West Virginia and some Tennessee repeaters.


The latest / last AB1JU CS700 NC PRN Codeplug:

* Due to the popularity of these radios dropping, I am no longer updating the codeplug on a regular basis. If there is a change needed, please let me know and I'll try to release an update. *

CT DMR Codeplug for the CS700 DMR Radio

If you are looking for the K1TMM CT DMR codeplug that I maintain for the CS700 radio, you can find it on the DMR page of K1TMM's website.

Custom Codeplug Programming

Occasionally I have been known to do custom programming for DMR radios. If you are interested in getting your codeplug "just the way you want it" I may be able to help. (With the right amount of pizza, of course!) You can use my Contact AB1JU page to inquire.

If you like my work...

Please, buy me a pizza! (or two!)
Be Generous, Please!


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