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Please excuse the mess while we develop our website!

The Wyoming DMR Project website is your one-stop for everything relating to the development of the new statewide DMR project.  You'll find information about current and upcoming systems, changes to the network, pictures, and even a place to download codeplugs for a variety of DMR radios.  Please check back often as we continue to develop the website.

What is it?
  • Digital Mobile Radio (DMR) is also known by and sometimes called MotoTRBO (pronounced moto-turbo).  DMR has been in the commercial market for years and recently found its way in to the Amateur Radio realm.  DMR uses TDMA (time division multiple access) protocol, which divides the frequency in to two timeslots.  This method allows two conversations to be carried on at the same time on the same frequency!  

What's the difference between DMR and D-Star?
  • Both are digital, but DMR has proven itself to be more consistent in reliability with fewer lost data packets and does not require proprietary equipment to use.  Though it is geared towards Motorola users and equipment, there are other manufacturers that have equipment that functions well.  Some of those include Hytera, Connect Systems, and Kenwood.  The advantage of using Motorola equipment is that it offers a few more features over the other manufacturers, one being "Roaming."

Is DMR "routable" like Echolink, IRLP, or D-Star?
  • No.  The routing and connection to other DMR systems (called networks) is specified and maintained by the system owner and/or Network Engineer.

What does DMR sound like?
  • Click here to hear what DMR sounds like over an analog radio.

I hear the term cBridge, what is it?
  • Manufactured by Rayfield Communications, a cBridge is essentially a gateway/bridge to other DMR Networks.  The Wyoming DMR Network utilizes our own cBridge to link all of the repeaters together within the Wyoming DMR Network.  The cBridge will also allow us to connect to another cBridge and link two networks together.  For instance, Colorado utilizes a cBridge to link approximately 15 repeaters together for their statewide talkgroup called COLO-WIDE.  Using our cBridge, Wyoming DMR could establish a link to Colorado's cBridge which would then link both WyWIDE and COLO-WIDE together, effectively linking every DMR repeater in both states together!  The cBridge is a major piece of hardware within the DMR Network and provides extensive linking capabilities.

What's a "talk-group"
  • A talkgroup (TG) is unique numerical value, similiar to a PL Tone.  For other stations to hear your transmissions, everyone must be using the same talkgroup value.  Wyoming DMR network uses two defined talkgroups, 100 and 3156.  Talkgroup 100 is referred to as WyLOCAL, and talkgroup 3156 is referred to as WyWIDE.  The WyLOCAL talkgroup is for local communications where WyWIDE is carried on all Wyoming DMR repeaters.  No other talkgroup values will be used on any Wyoming DMR Network repeater system!

What's a "time-slot"
  • As mentioned above, DMR uses TDMA to create two timeslots (TS) and defines the division as "timeslot 1" and "timeslot 2."  On a WyDMR repeater, TS1 is linked to all network repeaters and provides communications to any and all of the network repeaters.  TS2 is not linked and provides local communications only, much like a standard analog repeater system.  TS1 utilizes TG3156 and TS2 utilizes TG100.  To prevent collisions, no other talkgroups will be used on any timeslots on any Wyoming DMR Network repeater.

Where can I go to learn more about DMR?
  • The best way to learn is from an experienced DMR user.  Rob Cleveland, N7EMA, and Greg Galka, N7GT, are both excellent resources and always anxious to share the knowledge of DMR!  Rob is the founder of the Wyoming DMR Network;  Greg is the Network Engineer.

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