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Welcome to GB7DD which is the 1st DMR MotoTRBO Repeater in Scotland

rptr_handsets_mobilesGB7DD is a UHF Motorola MotoTRBO DMR Digital Voice Repeater which  operates on two digital time slots;

Time Slot 1 is for World-Wide,  Europe-Wide,  UK-Wide and Local.

Time Slot 2 is for Local and TG8 Roaming only. Currently GB7DD’s TG8 is part of the West Yorkshire TG8.

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GB7DD Coverage Map from UKRepeater.Net website

Coverage is, at this time, pretty  limited due to GB7DD being located on the outskirts of Broughty Ferry on the A92 to the east of Dundee where the ground rises to the North and West.  A better location is desired, an ideal location in my mind  is probably high up at Tayport which would have a good coverage of the majority of Dundee west and east. If anyone can suggest a good location to cover the most of Dundee then I would be happy to hear.

Everyone is welcome to use GB7DD at any time as long as you are a licensed radio amateur!  Just please ensure you disable GPS if you have that in your radio as it creates unnecessary data traffic on the network.

So you ask, what is so special about DMR …..  well a DMR Repeater is basically like an analogue repeater but is digital and has two time slots, so basically it is like having two digital repeaters in one – on the same frequency. This means you can have two seperate conversations going on at the same time using the same repeater frequency. One local amateur can hold a QSO with someone on the World_Wide Talk Group 13  at the same time as another local amateur can hold a QSO with another local amateur on  Talk Group 9. This is all possible  due to the two different time slots and the different Talk Groups; Local, Regional, National and International.

scalability

If you are interested in accessing this, the 1st DMR Repeater in Scotland, then contact me, Martin Higgins – MM0DUN, via the Contact  option above.

dmr_handsetsYou will need at least a Motorola DP3400 or a DP3600 Handset.  Prices vary from £100 to £300. You will often find 2nd hand equipment on  eBay.  There are a few Chinese made radio’s now appearing both online and via UK Sellers. I have no experience of these brands so cannot comment on build quality nor audio quality. 

Check the BUY page on this website as I usually have some second hand handsets or mobiles available for you to purchase.   If you just want to get a better understanding of DMR then drop me a line using the Contact form.

A donation button has been provided on this website if you do feel like saying ‘Thanks’ for the information on this website as well as supporting GB7DD.

Thanks

Martin Higgins – MM0DUN
Owner and Keeper of GB7DD



GB7DD DMR UHF Motorola Amateur Radio Repeater

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