Welcome to DMR Plus North America
DMR Plus is the original network that developed tools to interconnect ETSI Tier 2 DMR repeaters. It
has been popular in Europe for years but now, with the cooperation of DMR-MARC, it has finally arrived in North America
and the South Pacific. The DMR Plus architecture is similar to D-Star. Users have talkgroups to converse,
to disconnect, and to monitor channel status. Users choose from a large pool of reflectors and move back to the
converse talkgroup for all QSOs.
The DMR-MARC and DMR Plus partnership is ideal. The DMR-MARC network is robust and reliable. The DMR Plus
network is more aligned with experimentation and interoperability of technologies. Think of DMR Plus as the
best possible implementation of the former DMR-MARC Sandbox.
DMR Plus also supports a configuration that features the
traditional DMR-MARC talkgroups like Worldwide English, North America, Latin America, etc. on TS1 and the DMR-Plus reflectors on TS2. The
USA Regional talkgroups and the Canadian Provincial talkgroups are now connected to the TS2 reflectors.
DMR Plus supports connectivity via the DV4mini USB hotspot and the DVMEGA add-on board for the Raspberry Pi. DMR Plus also features MMDVM
connectivity. Be sure to visit the Contact Us link at the top of the page and join either Traditional DMR-MARC or
DMR Plus North America.
You asked for more control over your repeaters and now you have it!
DMR Plus Reflectors
Dongle Access is Here!
DMR-MARC is excited to announce remote access with the
DV4Mini from Wireless Holdings, the
DVMEGA using MMDVM, and the
Open Spot from Shark RF. You may access any of the below
DMR-MARC talkgroups on your traditional repeater or via a hotspot connected to DMRPlus. Somone locally must PTT the talkgroup to ensure the connection is made between
the stable portion of our network (DMR-MARC) and the experimental (DMR Plus). The inactivity timeout to disconnect is 10 minutes.
Shared Talkgroups between DMR-MARC and DMR Plus
|DMRPlus Reflector Number
||DMR+ Quebec (French)
||DMR+ USA (English)
||DMR+ Latin America (Spanish)
||DMR+ United Kingdom (English)
||DMR+ South Pacific (English)
||Southern Plains Regional
||Nova Scotia Provincial
||British Columbia Provincial
||New Brunswick Provincial
Our partner group, Phoenix UK, also offer the following
Talkgroup to Reflector Mappings
Instructions for DV4Mini Software Configuration
1. Download and install Visual C++ 2013.
(both x86 and x64 for 64-bit machines and x86 for 32-bit machines).
2. Download and install the DV4mini software
3. Follow the screenshots to configure your personal information in the DV4mini software in the DV Control tab.
4. Go to the Expert Settings tab and select you nearest server and adjust the DMR - QRG Correction in the Expert Settings tab to show the lowest error rate. Red is high error,
Yellow is medium, green is low error. You need to transmit to see the bit error rate (BER) bar. We have seen +150 to +300 Hz be optimal, depending
on the type of radio you use.
5. Choose the IPSC2-NewYork, IPSC2-Indiana, or IPSC2-Illinois servers. These are the only official DMR-MARC to DMRPlus supported servers.
We cannot vouch for the interoperability of the other servers. They may or may not work. Do not choose a BM server.
6. Choose a talkgroup after selecting
the TS2 radio button. Then Choose "Connect" on the DV Control tab.
7. Go to TS2 TG9 on your radio for all calls. (This is similar to what D-Star does with the "T" channel profile.)
8. Be sure to wrap your DV4mini in foil tape and use a 2 ft (60cm) or longer cable from the DV4mini to the antenna.
This will mitigate the RFI issues common with the DV4mini that cause inadvertent keyups every couple of minutes.
Configuration of MMDVM on DVMega/Raspberry Pi
1. Purchase a
Raspberry Pi and a
download the latest Jessie Western D-Star Widget Image
these helpful instructions.
4. Below is an example MMDVM.ini file that works well. Our partners in the UK, Phoenix,
are hosting this service for Europe. You may use their server in the event ours is down.
# Positive Latitude is degrees north
# Negative Latitude is degrees west
# Logging levels, 0=No logging
[DMR Id Lookup]
# Addresses Midwest USA and Central Canada
# Address for Eastern USA & Canada
# Address for Australia
# Address for New Zealand
[System Fusion Network]
# For basic HD44780 displays (4-bit connection)
# rs, strb, d0, d1, d2, d3
# Device address for I2C
# PWM backlight
Instructions for Shark RF Open Spot
Last Heard List
You Tube Video 1
You Tube Video 2
You Tube Video 3