• Affordable digital systems with low complexity.
• Products that are available in all regions of the world.

• Unlicensed (Tier I)
• Licensed Conventional (Tier II)
• Licensed Trunked (Tier II)

Open Interfaces, Open Standards, and an Open Philosophy.

DMR and Ham Radio

• All-digital network of over 400 repeaters in 37 countries.
• More than 10,000 registered users
• Repeaters are connected ALL the time.
• Excellent voice quality and extended battery life.
• Less than 1/3 the channel bandwidth of analog FM with twice as many voice channels!
• Reliable and scalable choice in connectivity

Two-Slot TDMA

DMR Tier II / Tier II occupies a 12.5 kHz bandwidth with tow channels sharing using Time-Division Multiple Access (TDMA). This results in spectrum efficiency of 6.25 kHz per channel.

Scalable programming. Reliable communications.

With DMR, you could choose to operate locally, using simplex, or a repeater using the Local talk group, which is similar to the way we use analog repeaters. From there, however, DMR provides many more options as far as scalability. Choose a Regional talk group for access to repeaters across several states, a National talk group, to access repeaters across the country, or even Worldwide!

Regional Talk Groups

New England DMR Talk Groups (Available on most DMR-MARC repeaters in New England)

Click here for a list of NEDECN Talk Groups

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Brandmeister Talk Groups (Available via Hotspots and some repeaters)

Talk Group Name Local Local Region World Wide Europe North America Romania Connecticut Statewide Maine Statewide Massachusetts Statewide New Hampshire Statewide Rhode Island Statewide Vermont Statewide Northeast TAC 310 TAC 311 WW TAC 1 WW TAC 2 WW TAC 3 English SOTA POTA America Link Berkshires

ID 1 9 8 91 92 93 226 3109 3123 3125 3133 3144 3150 3172 310 311 901 902 903 913 973 3181 31656 31252

Description Local - Single Site Only Local - Single Site Only Regional World Wide Europe North America Romania Connecticut QSOs Maine QSOs Massachusetts QSOs New Hampshire QSOs Rhode Island QSOs Vermont QSOs Northeast QSOs TAC 310 (Not a Call Channel) TAC 311 Worldwide TAC 1 Worldwide TAC 2 Worldwide TAC 3 English Summits on the Air Parks on the Air America Link Berkshires

Time Slot TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1 TS1

Click here for a list of Brandmeister Talk Groups
Time slots may vary depending on local repeater preferences

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Digital Voice - The Basics

Almost all of us use DV mode virtually every day of our lives. In fact, to many, it is their life! Mobile phones use advanced digital voice modes and the older 2G networks use a version of TDMA very similar to our own. All digital voice standards use encode/decode software called "codecs," which can be proprietary, as in the case of D-STAR, or open source, as in the case of DMR. DMR uses a form of FSK or "frequency shift keying" known as C4FM four level FSK constant envelope modulation. The voice is encoded/modulated, transmitted as a stream of data, then decoded by the receiver. The advantages of DV include easy IP distribution, excellent bandwidth efficiency and high quality audio. DMR applies a channel access protocol known as "Time Division Multiple Access" to allow two timeslots or voice channels within a single 12.5 kHz frequency allocation. Conveniently, the timing alogorithm for this is controlled by the repeater but the latest Motorola radios such as the 4000 series can also provide the facility - Timeslots and Talkgropus - Issue 2 February 2014 - Newsletter of DMR-UK & Yorkshire DMR Group.

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First Steps – Registration

Go to the DMR-MARC website and follow the on-screen instructions.

Although it says “User” registration, it is possible to have more than one ID, (but this is not recommended).

A mobile and a base station, for example, could have the same ID as long as they are not transmitting on the same Time Slot and Talk Group at the same time. This is also where you would register a repeater on the DMR network.

Next: Get a Radio!

Manufacturers include: Hytera, Motorola, Kenwood, Vertex Standard, Icom, Connect Systems, Tytera, and more!

     

Click here to download a code plug for the Connect Systems CS801 (WS1EC channels)

Click here to download the programming chart for the Connect Systems CS801 (WS1EC channels)

Click here to download a code plug for the Connect Systems CS800D (dual band mobile)

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For More Information:

DMR MARC Worldwide Network

New England Digital Emergency Communications Network

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DMR Repeaters (Maine, New Hampshire, and Vermont) 

Call Sign KQ1L K1XI K1YFY W1LH K1XI KB1UAS N1UGR W1BHR N1ME KC1FRJ KC1FRJ W1FCA W1EMA KC1FRJ N1ITR W1BHR W1IMD KC1FRJ K1DQ KQ1L KC1FRJ N1IPA KQ1L K1QVC K1OX K1OX K1LTM K1LTM KC1KAM KB1CFL W1COS K1LTM K1JC W1IMD W1WNS W1MWV KM3T W1RCF K1MOT K1MOT NE1B K1RE K1RE WA1ZYX NN1PA W1UWS W1IMD W1IMD W1IMD KI1P KI1P KI1P KI1P KI1P KI1P K1VIT KA1UAG KB1VP WR1VT K1FFK

Location Augusta Boothbay Buckfield Calais Camden Dexter Dresden Farmington Holden Ft. Kent Gouldsboro (Bar Harbor) Kibby Mt. Knox Lincoln Litchfield New Sharon Portland Presque Isle Shapleigh Sidney Smyrna Topsham Waterville Derry Chester Bow Rochester Wakefield Campton Concord Clarksville West Ossipee Sanbornton Mt. Washington Somersworth Mt. Cranmore (N.  Conway) Mt. Uncacoonuc Mt. Uncanoonuc Hudson Hudson Hudson Gunstock Mt. (Gilford) Gunstock Mt. (Gilford) Keene Goffstown Mt. Ascutney Williamstown Pico Peak Monkton Northfield Burlington Burke Mtn Ricker Mt. (Bolton) Jay Peak Mt. Snow Mt. Lincoln (Warren) Corinth Mt. Equinox Brattleboro North Adams

State ME ME ME ME ME ME ME ME ME ME ME ME ME ME ME ME ME ME ME ME ME ME ME NH NH NH NH NH NH NH NH NH NH NH NH NH NH NH NH NH NH NH NH NH NH VT VT VT VT VT VT VT VT VT VT VT VT VT VT MA

Frequency 145.170 - 145.200 - 145.320 - 147.045 + 145.370 - 145.220 - 145.430 - 442.400 + 145.310 - 145.200 - 145.210 - 145.120 - 145.420 - 145.350 - 146.700 - 145.140 - 145.340 - 145.180- 145.110 - 145.240 - 147.090 + 145.190 - 146.925 - 145.310 - 145.190 - 145.170 - 145.240 - 145.280 - 145.180 - 145.420 - 145.250 - 147.075 + 145.180 - 448.975 - 145.180 - 448.775 - 444.300 + 145.220 - 145.260 - 447.725 - 147.105 + 145.360 - 447.875 - 444.650 + 145.200 - 448.475 - 448.875 - 444.500 + 443.750 + TBD 446.475 - 448.575 - 445.075 - 446.375 - 446.275 - 449.475 - 443.900 + 441.350 + 444.400 + 449.675 -

Color Code 12 12 12 1 12 12 12 11 10 12 12 11 12 12 12 11 12 12 4 12 12 13 12 1 9 8 3 7 6 7 0 6 6 2 5 2 10 11 5 1 0 3 9 1 2 5 7 1 7 TBD 1 5 7 7 6 5 8 7 1 1

Network NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO NE-TRBO Augusta NE-TRBO NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO Augusta NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO/EWARN NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO NE-TRBO

Click here for the most current repeater listing, and to find out more about new repeater sites.

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NEDECN DMR Nets

Here's a list of some of the nets that take place on various Talk Groups around New England:

• Sundays at 10 AM is the Maine Dirigo Net on ME Statewide TG (3123)
  
• Sundays at 8 – 9 PM is the Providence Radio Association (PRA) Net on NETAC1 TG (8801)
• Mondays at 7:30 – 8:00 PM is the New England Digital Swap Net on New England Wide TG (3181).
• Mondays at 8 – 9 PM is the New England DMR Net on New England Wide TG (3181).  
• Tuesdays at 8 – 9 PM is the Vermont State DMR Net on VT Statewide TG (3150)
• Wednesdays at 8 – 9 PM is the YCCC Contesting and DX Net on NETAC1 TG (8801)
• Thursdays at 8 – 9 PM is the New Hampshire State DMR Net on NH Statewide TG (3133)
• Thursdays at 7:30 – 8 PM is the New England SKYWARN DMR Net on the SKYWARN TG (759)
  

SKYWARN Activations– The National Weather Service in Gray, ME will make call-ups for weather reports on the SKYWARN TG (759).  Please call in with your observations during significant weather events.  In the event of weather activations by multiple weather offices (Gray, Norton, Burlington or Albany) , communications will shift to Statewide Talk Groups as appropriate (ME, NH, MA, RI, VT, etc.).

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DMR Simplex Sunday

On Sunday, June 17, 2018, WSSM members set out on a coordinated mountain topping expedition in order to learn more about the range limits of DMR simplex. The longest distance contact achieved was between Mt. Equinox, VT and Saint-Jean-Sur-Richelieu, QC - a distance of: 151.13 mi / 243.22 km (UHF), and the second longest was between Mt. Greylock, MA and Mt. Washington, NH - a distance of: 145.56 mi / 234.25 km (both VHF and UHF).

Click here to read the whole story.

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To view NEDECN Net Watches, click on the links below:

NH/MA/RI Netwatch
VT Netwatch
CT Netwatch
ME Netwatch
NY/NJ Netwatch
CANADA Netwatch

To view the Brandmeister Net Watch, click here