The South West Cluster Of DMR Repeaters

The South West Cluster of DMR TDMA Repeaters is an independent network of repeaters that is NOT centrally controlled or funded.

Each repeater is supported by it's own Group or Club or by individual donations.

The Cluster is not connected to either the Phoenix, Brandmiester or DMR+ Networks etc., or what every they may be called, this week.

South West Cluster, currently consists of GB7AA, GB7BS, GB7EW, GB7JB, GB7KT, GB7MJ, GB7RD, GB7SD, GB7SP and now GB3JB.

DMR TDMA technology is the internationally and communications industry agreed and approved OPEN standard for VHF and UHF communications between 30 Mhz and 1 Ghz. Thus it is not proprietory and/or single source manufacturer, with all that these factors imply.

The South West Cluster, provides an independent and SIMPLE TO USE network that takes advantage of the DMR TDMA technologies' "roaming" capability, a major function offered by DMR TDMA, which none of the other networks are able to take advantage of.

By simply activating the "roaming" capability of your radio, when travelling around a region, your radio does all the work for you, by automatically switching you to the appropriate repeater for the area you are in. Much like a mobile phone.

The South West Cluster 950 Net, is held every SATURDAY evening between 7 & 8 pm. Access is via Slot 2 of your local repeater, using TG950.

SWC Combined Cluster Coverage.

If you need to talk so someone about your local repeater, we suggest that you contact the relevant repeater keeper.

Try the groups web site, if they have one, or the info may well be a available from the ETCC web site. See our links page.

As with all computer generated coverage maps, they can never be 100% accurate and the ability of any individual to successfully link to any repeater is totally dependent upon their equipment and their local topographical characteristics.

The map shown is for guidance only. It is based on all cluster repeaters operating at 25 watts ERP, uses a scale of 500m per pixel, and a 90% communications probability factor.

The coverage for GB7JB has been removed, as although still operational, it is totally blanketed by the new additional coverage density provided by GB3JB, on 2m.

GB7JB is likely to be moved at some point in the future to a location where further improves the clusters overall coverage.

Introduction To DMR Presentations.

If you represent an Amateur Radio Group, Club or Society, etc., and feel that your members would like an introductory presentation on DMR TDMA technology and it’s capabilities, or would like to discuss the development of your own DMR TDMA repeater addition to the SWC, please feel free to contact G3ZXX via his email.

DMR TDMA technology is open-source with lots of manufacturers and consequently more choices in hardware and significantly cheaper prices.

FDMA technology D-Star and Fusion, for example, are proprietor. No choice in manufacturers, they are incompatible with each other, and of course the industry approved DMR TDMA standard.

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