Andy (G4SZM) from the Weston Repeater Group reports being in the process of moving their antenna configuration to a single combined system and needs urgently a UHF circulator to complete the hybrid combiner setup. Anyone able to assist is invited to contact Andy via their group web site.
GB3AA the 2M repeater in South Glos. is now fully operational as dual mode nbfm and C4FM Fusion repeater in AMS mode. Reports welcome via the group web site. sgrepeaters dot co.uk /G4CJZ
GB7UL DMR ON AIR
GB7UL the DMR repeater located near Carrickfergus is now on air covering the Greater Belfast area. The repeater is connected to the Phoenix UK core network and carries the standard talkgroups which are listed on cc-3.net. Regional Talkgroup 880 will be of special interest to GI Amateurs as it interconnects all the DMR repeaters in the Province.
GB7DZ is now operational and it provides handheld coverage for Newcastle city centre. It's on the Brandmeister network, so Timeslot 2 Talk Group 9 is connected to the UK national reflector 4400. Zoltan, M0MBA
Emerging Technology from the UK Adding to the widely used D-Star Homebrew software repeaters by Jonathan Naylor G4KLX. Jonathan has added DMR to the list. It is now possible with a Arduino DUE based modem called the MMDVM to build a complete Homebrew DMR repeater for amateur radio use, connected to the world wide Brandmeister network. /G4TSN
GB7EKReported: G6MRIOPERATIONAL 8 Feb Repeater is fully operational and on CMR-MARC www.gb7ek.co.ukGB3NCReported: G4WVDOPERATIONAL 4 Feb I am the keeper and have received the NOV from Ofcom today 04/02/2106GB3HBReported: G4WVDOPERATIONAL 4 Feb I am the keeper and have received the NOV from Ofcom today 04/02/2106GB7FCReported: M0AUTOPERATIONAL 4 Feb GB7FC is now back in service after a site change.GB7ULReported: GI6DKQFIRST SWITCH-ON 30 Nov Now on air and connected to the Phoenix UK Network. Reports welcome!
MB6ILE Simplex Fusion DV gateway is now operational in Pudsey West Yorkshire. /Stuart,M0SGS
DMR Key Features
Time-Division Multiple-Access (TDMA) preserves full channel width and divides it into alternating time slots that can each carry an individual call.
Motorola maintains that two-slot 12.5 kHz TDMA-based systems (providing 6.25 kHz equivalency) is more efficient.
This means that two separate conversations can be handled by the one repeater, on the same frequency but on a different "channel".
TDMA technology for narrowband 12.5 KHz (6.25 equivalent-6.25e) provides advantages of: