The DMR-MARC Worldwide Network

Our network is an all-digital group of MOTOTRBO DMR repeaters in the USA, Germany, Australia, South Africa, New Zealand, Canada, Switzerland, Spain, and Austria We 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 our network are connected all the time. TRBO radios have great voice quality, great coverage, and extended battery life all in HALF the channel bandwidth of a traditional analog FM repeater. Isn't time you upgraded to digital radio's cutting edge?

Latest News

New Repeaters on the network

• K2ACY Atlantic City, NJ
• KDØCJS Ft. Collins, CO
• WB6WUI Mazama and Winthrop, WA
• WA6NVL San Diego, CA
• WBØVHB Mt. Pleasant, IA
• N4FIV Pensacola, FL
• KB8CRR Oshtemo (Kalamazoo), MI

IWCE Expo (Las Vegas) Frequencies

• Active Feb 22, 23
• 446.275-, Color Code 1
• DMR-MARC linked: Slot 1, Group Call ID 1
• Local Only: Slot 2, Group Call ID 2
• ARS MUST BE DISABLED ON ALL SLOTS




Other Interesting Items

• Read Yaesu's plans to manufacture DMR radios!
• Perth Australia now on 438.2 -5.4 MHz split.
• Here's how the contact lists work: North Am. is for users of North American CPS. Euro/Afr./ANZ is for users of Europe, Africa, or Australia/New Zealand versions of CPS. BOTH versions contain WORLDWIDE contacts. You can only use the version that is compatible with your region's CPS.
• Check out the new EMEA contact list under Member Toolbox. Thanks to Oliver, F1UOT.
• The TRBO subscriber and repeater ID database is up to date with all known worldwide subscribers and repeaters. If you are not on that list, please use our contact us link at the top to update the worldwide master repeater and subscriber ID database. Thanks.




Network Update

• ALL users of DMR-MARC should try to upgrade to subscriber firmware version R01.08.20 as soon as possible. Your mobile and portable radio must be upgraded to a version of firmware newer than R01.06.00 to use DMR-MARC. The c-bridge does not support earlier versions and you will miss segments of calls.
• BREAKING NEWS: The c-Bridge Controllers now support a form of Call Arbitration. This helps to prevent two or more users from 'doubling' when transmitting (transmitting on top of each other), when each one is on separate systems in the network. This Call Arbitration method makes use of the Transmit Interrupt functionality in the MOTOTRBO radios. To use this, the following two functions should be enabled (checked in the CPS): Allow Interruption, Enhanced Channel Access
  If two users transmit at about the same time, the one that started transmitting first will be given the 'floor'. Anyone else that started transmitting after the first one, will hear a tone in their radio speaker and their radio will stop transmitting. As soon as they let up on their PTT button, they'll hear the transmission from the other unit in progress.
  - John Rayfield, Jr. CETma, WØPM
• The USA masters have been upgraded to R01.08.10. MTR-3000 owners are STRONGLY encouraged to make this firmware update. ASAP. XPR-8300/8400 owners should update at their convenience. Any peer with firmware older than R01.08.00 needs to update immediately. Thanks.
• NETWORK ISSUES: If you notice any problems, complete the form under the Contact Us link at the top of the page. This way your observation gets routed to the specialists. Complaining on the air, even during the weekly net, will do you no good. Thanks for your patience and help in this matter. If you have any additional detailed questions, contact your local repeater trustee.
• IMPORTANT!! Make sure you have your subscriber is set to the following: Admit Criteria - Color Code Free, In Call Criteria - Follow Admit Criteria. Also make sure "ARS" is disabled for time slot 1. PLEASE READ THE STEP BY STEP INSTRUCTIONS under Member Toolbox to progam your radio.
• We now have 7 masters on the network and are connecting them via the C-bridge. This frees up more room for expansion and enhances network robustness by eliminating a single failure point.




Future Locations on our Network

• Port Moresby, Papua New Guinea
• Penang, Malaysia
• Are you in the U.S., Canada, U.K., Australia, New Zealand, or South Africa? Do you have a coordinated repeater pair, a repeater site identified, and high speed access? Would you like to be our newest network affiliate? Contact us using the link at the top of this page.