Slot 1, which only accepts Talk Group 9, is intended as a local nattering channel, much the same as any other 70cm repeater.
Slot 2, which only accepts Talk Group 950, connects to the cluster of linked repeaters.
Signals accessing slot 2, of any of the SWC networked repeaters, will automatically be re-transmitted across the SWC subject to availability, thus providing greater opportunities for contacts as a result of the combined coverages.
Because there are NO hassles associated with multiple talk groups trying to share the same time slot, the cluster also takes advantage of the "roaming" capability, a major function offered by TDMA DMR, which none of the other DMR networks are believed to be able to take advantage of at this time.
Thus, when travelling around a region, for example mobile, by simply activating the "roaming" capability of a suitably programmed radio, 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 of DMR Repeaters currently consists of GB7AA, GB7BS, GB7DR, GB7JB, GB7KT, GB7SD and GB7YS.