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As of 1st May 2016 some important changes were made to the GB7DD and GB7EE repeaters in Scotland which had been agreed between Allister GM7RYR (the keeper of GB7EE), Martin MM0DUN (the keeper of GB7DD) and the UK BrandMeister Team.  These changes have been made to make it easier  for the users of these repeaters and to allow those with Zumpspot, DV-Mega and DV4Mini’s to be able to converse with those using the repeater.  

The Scottish Repeaters detailed on this site have TG9 on Slot 2 linked by default to Reflector 4405, simply select TG9 and press the PTT and your call will be heard on all Scottish Repeaters. Check the DV Scotland Website for details on what is available on the other digital repeaters in Scotland.

For lengthy QSO’s you can always QSY to Reflector 4415 which is the Scottish ‘Chat Room’. This will be even more important as the Scottish DMR Repeater Network grows to ensure that a larger number of repeaters are not blocked by two people chatting for an extended period of time on reflector 4405.

If you wish to make use of the wider BrandMeister Reflector system to connect the repeater to another reflector then to be able to do this simply add the Reflector 4xxx number or Status 5000 to your contacts and then on your radio select TG9 Slot 2 and then select the Reflector or Status number from contacts and, blip the PTT and then return to TG9 to transmit.

If you have unlinked the repeater from the default Reflector 4405 then the repeater will auto-connect to Reflector 4405 after 10 minutes of no activity.

View Reflector 3305 Activity VIEW REFLECTOR 4405 ACTIVITY HERE

TG9 on Slot 1 is intended to be used for local chat.

If you require any guidance then complete the online form and someone will come back to you and answer your queries.

NO DIRECT CALLS are permitted. Please also stick to the recognised Talk Group/Reflectors and do not make up your own.

GB7DD operates on two digital time slots for licenced radio amateur use only on the World-Wide BrandMeister Network:

Time Slot 1 is for TG91 World-Wide,  TG92 USA,  TG93 Europe,  and Local. TG91 is also available for the DMR Saturday Weekly Net.

Time Slot 2 is for TG9 which is linked to Reflector 4405 as of 1st May 2016 which will link all Scottish DMR BrandMeister repeaters together. 

Please remember that repeaters are primarily for mobile users and you are asked not to hog the repeater or Talkgroup/Reflector.  Please use the Talkgroup with the lowest number of external connections to reduce the number of repeaters being utilised by your QSO – for example don’t sit on Time Slot 2 if you are chatting to someone local, instead use TG9 Local on Slot 1. 

Also, don’t sit on TG9 Local on Slot 1 for hours on end as you stop anyone else from making use of World-Wide from being accessible.

Likewise sitting chatting for long periods on TG9 Local Slot 2 will stop anyone else from making use of the Dundee <-> Rest-of-Scotland link. This will become more important as DMR in Scotland expands. 

If you are interested in accessing GB7DD but wish some guidance, then please do not hesitate to contact me, Martin Higgins – MM0DUN, via the Contact  option above.

A good choice of DMR capable handsets in the marketplace!

You will need a DMR (not a dPMR) handset or mobile, one with a display is easier to use. 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.   One handset which does seem to be popular is the Tytera MD-380 (the TYT MD-380 and Revetis RT3 appears to be the same radio) and the Radioddity GD-77 (Dual-Band!) which are priced between £78 and £150 depending on where you purchase it.  I have provided a menu item (DOWNLOADS) on this site for the various free programming software packages and various codeplugs kindly created by others to get users of their new handset started and on-air in as short a time as possible.  You will also find codeplugs for various Hytera models available on this website too.  If you need assistance drop me an email via the Contact Us Form.

site-updatesKeep up-to-date with any changes being made to the GB7DD website by clicking on the Web Updates image.


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  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 digital encoded time slots and the different Talk Groups; Local, Regional, National and International.


GB7DD DMR UHF Motorola Amateur Radio Repeater

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