Sunday, 27 October 2019

GB3TD Frequency Regression

It is with regret that the GB3TD repeater will be returned to its original frequency configuration 433.075/434.675MHz during the afternoon of Wednesday 30th Oct.

The RRG apologise to those that have already reprogrammed there radios however this regression is required to overcome some issues that have been experienced over the coming week.

This will be a short term fix whilst we discuss options with the Repeater Management Committee.

Monday, 21 October 2019

MB7USW - Off-Air

During on-site works on Friday 18th Oct, a fault occurred on the Raspi-Pi running MB7USW.

The equipment has been removed from site to resolution and will be returned as soon as partially possible.

We apologise for any inconvenience.

Friday, 27 September 2019

GB3TD Frequency Change from 18th Oct. - **** Action is required.****

Please be advised of the below frequency change notification for GB3TD. To complete this on Friday 18th Oct the repeater will be off-air from approx 1pm. We expect service to resume on the NEW frequency from 3pm

GB3TD Frequency Change
The Swindon UHF repeater GB3TD has been operational on the same frequency 433.075 Mhz and from the same site since 1994 and is managed by the Ridgeway Repeater Group.
In recent years the repeater has been suffering from interference in the form of clicking and pulsing noises and also from wideband transmissions which can severely desence incoming signals.
The group has spent many hours trying to determine the source of some of these without success.
OFCOM were consulted and tried their best to identify the problem without actually finding it due to restrictions gaining access to certain areas of private property.
The main interference to our secondary use band is from 433Mhz to 435Mhz which emanates from low power devices but also the MOD which is the primary user of the band.
When GB7TC our DMR repeater was commissioned and co sited with GB3TD and using the same antenna, the filtering system was complicated and caused extra losses in the system. Never the less has worked well.
A question was asked to the RSGB repeater committee asking if a 7.6Mhz wide band split would be possible for GB3TD.
The RRG were asked if the group would like to try a reverse shift to the normal Tx low Rx high configuration.
GB3TD output frequency will be 438.4375 and the TD receive will be 430.8375.
This was agreed and an NOV issue to Rob, G4XUT.
The benefit is that the filtering for GB3TD and GB7TC will be easier with less through losses with both Tx and Rx being at the same ends of the band.

Monday, 18 March 2019

RRG Annual General Meeting – 8th May 2019

The Annual General Meeting of the group will be on Wednesday, 8th May 2019 at 7.30pm in the offices of Thrings LLP, 6 Drakes Meadow, Penny Lane, Swindon, SN3 3LL.

All members and visitors will be warmly welcomed. As well as providing an opportunity to contribute to the direction of the group, the AGM provides an opportunity to meet other users of the repeaters that you probably speak to on a regular basis.

Monday, 21 January 2019

GB7TC Update for 2018/2019


GB7TC Update for 2018/2019


Changes to DMR in the last few months have included Talk Groups (TG) to link with other Amateur Radio Digital Modes.

New Talk Groups


TG2351 YSF CQ-UK WIRES-X LINK (USER ACTIVATED)



This is user activated, introduction and more information from https://wiki.brandmeister.network/index.php/What_is_BrandMeister


TG260 is now available on slot 1 as a user activated group on all Phoenix UK repeaters. This will allow access to the Polish national talk group. For a QSO please move to user activated TG113 or TG123.

Summary of current Talk Groups available on GB7TC


All except TG9 are also linked through the Phoenix Internet based core links World Wide.

Talk Group
Name
1
TG1
World Wide Calling (Always Linked)
1
TG2
Europe Calling (Always Linked)
1
TG9
Local (Secondary)
2
TG9
Local (Primary)
1
TG13
World Wide English Calling (Always Linked)
1
TG80
UK Wide - User Activated 1
1
TG81
UK Wide - User Activated 2
1
TG82
UK Wide - User Activated 3 (Optional)
1
TG83
UK Wide - User Activated 4 (Optional)
1
TG84
UK Wide - User Activated 5 (Optional)
1
TG113
World Wide English - User Activated 1
1
TG119
World Wide - User Activated 1
1
TG123
World Wide English - User Activated 2
1
TG129
World Wide - User Activated 2
1
TG235
UK Wide Calling (Always Linked)
1
TG2351
CQ-UK Wires-X Link (User Activated)
1
TG2353
Link To Brandmeister (User Activated)
1
TG260
1
TG6550
Link To Brandmeister TG655 (South Africa) (User Activated)
2
TG9990
Echo Server



Roaming Talk Groups


Roaming TG are used to access the DMR repeaters in another region, for example, from GB7TC calling someone in Scotland.

Slot
Talk Group
Name
2
801
South East
2
810
South West
2
820
North West
1
821
GB7FW , GB7LP
1
822
GB7BR , GB7CA , GB7PN
2
830
Midlands
2
840
East England
2
841
GB7AL, GB7CT, GB7DS , GB7FU GB7MK , GB7ND, GB7WS
2
842
GB7CT, GB7EX, GB7FU GB7HA
2
844
GB7FU, GB7IN, GB7RE, GB7SK
2
850
Scotland
2
860
North East
2
862
GB7EL, GB7HS, GB7HX, GB7LE, GB7MR, GB7RV, GB7TD
2
870
Wales
2
880
Northern Ireland

Monitoring the DMR network

Local monitoring of GB7TC


This shows who is using GB7TC, by following links you can monitor an individual call sign or switch to other DMR repeaters.


Monitoring the UK DMR network


This show the status of the UK (and some Dutch) DMR repeaters, also the traffic on the links to Wires and Brandmeister networks.


I use it to monitor and also see who is active!

Checking the internet link from GB7TC


If you use the echo TG9990 and it fails to echo audio, then the link is down or there is a core issue. In most cases this will resolve within a few minutes as the link from GB7TC to the internet uses 3G technology and it reinitialises occasionally.



GPS to APRS


For those getting to grips with GPS to APRS. There are a few different private talk groups you can send the data to which produce different behaviour on APRS.

RRS & Radio IDs:
5050 = without SSID
5055 = House QTH
5056 = Camping
5057 = walking with handheld radio
5058 = boat
5059 = car

Please see http://www.opendmr.net/index.php/anytone-d868uv-gps/ for set-up and configuration details.

DV4Mini and other Dongles


The reflector groups linking is currently

Reflector
NAME
TG
Slot
4400 (UK Calling)
TG235
235
1
4401 (UK - Chat 1)
TG80
80
1
4402 (UK - Chat 2)
TG81
81
1
4403 (UK - Chat 3)
TG82
82
1
4404 (UK - Chat 4)
TG83
83
1
4405 (UK - Chat 5)
TG84
84
1
4409 (CQ-UK WIRES-X)
CQUK
2351
1
4410 (SW England)
TG810
810
2
4420 (NW England)
TG820
820
2
4430 (Midlands)
TG830
830
2
4440 (East England)
TG840
840
2
4441 (East England 1)
TG841
841
2
4442 (East England 2)
TG842
842
2
4450 (Scotland)
TG850
850
2
4460 (NE England)
TG860
860
2
4470 (Wales)
TG870
870
2
4480 (Norther Ireland)
TG880
880
2
4491 (SE England)
TG801
801
2

If there is anything else that you would like explained, send me an e-mail g8vri@rrg.org.uk