Cobham Wireless' range of DSP (digital signal processing) VHF digital off air BDA’s provide VHF coverage in small, medium, large and campus style buildings, inside tunnels and metros and into remote or rural communities. The product range supports the whole VHF band and can be used to provide coverage by itself or as a feeder into a DAS (Distributed Antenna System). Being software based new features and capabilities can be easily installed. The products feature an innovative “time slot ALC” mechanism which reduces noise transmitted to the base station thus improving overall network performance and selectivity. Systems are easily configured either locally or remotely via a simple GUI web interface or using the AEM (Active Element Manager) system and are supplied in secure, robust and weatherproof IP65/NEMA 4 cases. In common with other public safety products our VHF product range are of the highest quality and have been operating in many networks for over 10 years.