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  Welcome to ....  
.... the home of the UK's fastest growing Amateur Radio Repeater Network
DMRUK - Getting Started.

Now you've bought your radio, you'll probably need some help to go live on the network. Start by speaking with the keeper of your local DMR Repeater - if you have problems use our Contact Us Form to explain what assistance you need and one of the team will try and help you.

The DMR system is based on a commercial digital standard and as such, differs from normal analogue equivalents in two important ways.

Firstly, in order to access the network and all of its features, the equipment has to be set up correctly using the appropriate manufacturer software and interface. You cannot simply walk into a shop, buy DMR equipment and use it straight out of the box. It is within the capability of an experienced user to program their own gear, but DMRUK recommends that initially, the repeater keeper or someone nominated by him/her provides this service, This avoids any non-compatibility problems both to the individual and to the network.

Secondly, in order to program your radio, DMR-MARC will provide you with a unique identification number. Further information is available here -

Importantly - please do not attempt to access the network without an ID and please DO NOT MAKE UP YOUR OWN. We'll know and it won't work! Also, please do not apply for more than two IDs as that is just plain greedy! 
Click here to read about programming

A typical "last heard" log from the DMR-MARC network showing IDs and linked callsigns. Each country has its own prefix. "2351XXX" is a UK ID and "2624" is Germany for example.



The following details the programming of the Yorkshire DMR Systems on the likes of the popular Motorola DP3400:

To try and explain things better.... The DP3400 has a rotary knob (2) on the tope of the radio with 16 positions/channels to choose from and by pressing the Zone button (6) you get another 16 positions/channels to choose from. The tone when pressing button 6 represents the Zone you are in - a low sounding tone tells you that you have selected Zone 1 and the high sounding tone tells you Zone 2.

If we look at Zone 1 channel 6 this selects the frequency of GB7TD with the slot on the repeater for Talk Group 8 S2 which is the Roaming channel. What this means that as you drive about or walk about and the signal strength drops on the repeater signal you are receiving then the radio automatically roams you onto the next DMR repeater that has been configured into the same Talk Group so you can have a seemless QSo without having to change channels - it's done for you automatically. The roaming Talk Group is great and aimed at mobiles who are say going from York to Leeds to Huddersfield to Manchester and finishing in Liverpool. If there are DMR repeaters at key positions along the route then on the Roaming Talk Group, if their coverage overlaps, you could carry on the same conversation from door-to-door.

If we then look at say Zone 1 channel 4 this selects the frequency of GB7TD with the slot on the repeater for putting your call out to all other DMR Repeaters within the UK which may also have others listening for a QSO or even putting out a call.

It is fully recommended that only Motorola Repeaters and Motorola radio equipment is used on the DMR system as only Motorola DMR equipment is fully compatible with MotoTRBO DMR Systems. Other DMR will work but with some loss of features.
There is a large number of second hand ex-commercial radio equipment available on the various online auction website, as well as various accessories for them. Simply remember and purchase the one that will work on the systems in your area - the vast majority of DMR Systems are UHF. Below is a list of the various handportable Motorola radios as well as the mobile units, both older models and newer models. You will find a plentitude of the Motorola DP3400 online second hand for anything between £80 and £150 some with desk slot chargers and some without. Desk slot chargers are comparible price-wise with other radio manufacturers desk slot charger - expect to pay between £26 and £50 for a genuine Motorla charger
Here we explain a typical setup:


TG1 is for Worldwide Calling and for QSOs less than 2 mins. This is not a talkgroup to ragchew on.

TG13 Worldwide English for English speakers, TG10 for German speakers, TG11 for French speakers, and TG14 for Spanish speakers, and TG15 for Portuguese speakers. TG13 is available 24/7 on many systems and not PTT so for English speakers it will work if you want to make international calls and there is no time limit other than being courteous and not monopolizing the talkgroup so others can use it. (That's the advice of any wide area talkgroup including TG3 North America). Remember, TG13 is not for USA-USA or USA-Canada calls. TG3 North America is for that. If you want to call the UK, Australia, New Zealand, South Africa, or even English speakers in other countries use TG13. PLEASE DO make those international English calls on TG13.

Make our fellow overseas hams feel welcomed to join us. Let's key up on TG13 from time to time by announcing our call and asking for any international traffic using plain language. (Don't call CQ CQ CQ - this is not HF).

You'll also notice that there is two nets on TG13 - the weekly tech net and the UK net. DMR-MARC hope to add one from the South Pacific soon also. Please spread the word. Please do a better job educating people about how the talkgroups work. The DMR-MARC Network have many new users every week. There are also have many older hams that might be out of the loop for whatever reason.

DMRUK - Amateur Radio for the 21st Century

motorola, mototrbo, DMRUK Network Co-ordinator, Michael Lockwood, dmr, dmr-marc, Howard M0HRE, John G0SJB, gb7dd, gb7aa, gb7hx, gb7td, g1xcc, amateur radio, digital radio, urh, motorola, dr3000, dp3400

Click here to request radio id