Durham is a small city and main settlement of the City of Durham district of County Durham.

Durham is situated 13 miles (21 km) to the south west of Sunderland. The River Wear flows north through the city, enclosing the centre on three sides to create Durham's "peninsula".

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UK WIDE EMERGENCY SERVICES

• All wide area and local Police communications are carried out on the UK wide TETRA network called Airwave using a mixture of Motorola, Sepura and EADS radio terminals. This system replaced their previous 150Mhz AM simulcast wide area and local PR UHF systems. Some historic information can be found here: www.dtels.org/html/site_map.htm

• Local authority NHS Ambulance services use Airwave, replacing their previous wide area 166Mhz and UHF handheld 'incident' radio systems.

• Local authority Fire & Rescue services also use Airwave as their prime method of wide area 'vehicle to control' communications replacing a mixture of FM and AM simulcast systems in the 70Mhz band. At incident Fireground communications are still carried out on simplex UHF frequencies with some cross-band capabilities to Airwave.

Fire & Rescue Services are in the process of migrating to Airwave, some are still operational on 70Mhz.