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emergency response vehicleThe Axell Wireless Emergency Response Vehicle (ERV) has been developed to meet the requirement to provide enhanced wireless coverage for the emergency services in critical areas. The ERV enables the temporary deployment of a Repeater/BDA and/or Base Transceiver Station (BTS) installation and once deployed provides all of the advantages and communications facilities associated with a fixed installation.

The equipment consists of various pallet mounted Wireless Enhancement equipment, a Power Supply, Tools and Calibration Equipment, a Pneumatic Mast, Antennas and Radiating Cables to connect to the user’s network. The signals are then distributed by means of radiating cable or antennas to provide coverage into the wanted area. The whole system is powered by a multifunction power pack which includes a diesel generator and a 230V inverter. This fully automated power system allows the vehicle to be completely self-sufficient and once deployed the ERV can operate the enhancement equipment for up to ten days without refuelling.

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Typical ERV deployments include providing communications in tunnels or buildings following natural disasters, accidents or terrorist incidents. The ERV can equally well be used to assist with special events or to cope with short term coverage problems.

The modular equipment package is flexible in design and can be adapted to individual requirements. Installations have been carried out in panel vans for urban deployment and also in all terrain vehicles that can deal with unusual conditions that might affect the ability of a normal vehicle to reach the desired area. If required, the system can be built into an existing vehicle such as fire appliance or mobile communications control vehicle subject to space availability.

The base ERV specification takes into account the safety and comfort of the operators and has been designed to be operated with a minimum of fuss and effort. A five day operator’s course is available to train personnel in the use of the equipment in what can be difficult and dangerous circumstances. The course covers the theory and practice of operating the vehicle to ensure that crews can deploy the system safely, efficiently and in a manner that maximises the effectiveness of critical communication systems when they are most needed.

eQUipmenT The vehicle platform is capable of multi-role operation and able to carry either a Repeater/BDA system or a BTS system or both, dependent on operational requirements. The Repeater/BDA system is based around Axell Wireless’ own tried and tested Repeater/BDA equipment.

The equipment is mounted on castor mounted “pallets” and uses a sliding rail system for equipment loading and installation. The system will utilise three different pallets and the palletised equipment can be loaded up to meet whichever requirement is called for

Pallet 1: Repeater/BDA (x1), Battery Backup (x1)

Pallet 2: BTS (x1), Power System (x1)

Pallet 3: Radiating Cables and/or other equipment (including an optional Repeater/BDA.)

Each pallet will be moved using a ‘Manual Stacker’ type pallet lifting truck into position on the rail system, then slid into place and locked.

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BTS 4 & 12 Element Yagis Portable Spectrum AnalyserRepeater/BDA Indoor Panel antenna Ruggedised Portable PCDual Redundant Power Supply 75 metre radiating cables on drums Attenuators & Termination LoadsPneumatic Mast RG214 connecting cables Toolbox with hand toolsAir Compressor RG214 Vehicle Mast feeder cable 6 Way Mains BoardDiesel Generator RG214 test leads First Aid Kit & Fire ExtinguisherMains Inverter Mains Extension Cables on Drums

This inventory is by no means definitive; each ERV can be configured to customer’s specific requirements from Repeater/BDA Specification to Vehicle Type.

erv As A BAse TrAnsceiver sTATionThe Axell Wireless Emergency Response Vehicle has been designed for use in areas and situations where the provi-

sion of additional coverage is necessary, especially in the event of an emergency.

Coverage black spots – areas where the terrestrial network does not cover

Areas affected in the event of a BTS failure

Areas requiring additional capacity due to increased number of users

Each vehicle incorporates a BTS and all of the equipment necessary to generate a fully network incorporated signal, independent of any existing infrastructure.

The system remains entirely autonomous by using a VSAT system to provide a link into the main network (this acts as the equivalent of the GBN connection).

A GPS antenna mounted on the vehicle provides the timing signal necessary for the BTS to gain frequency lock.

The design makes it possible to provide power to the system whilst the vehicle is travelling – this could enable a GPS lock to be gained during the journey to site which would enable the system to ‘free-run’ in locations where GPS lock is not possible.

The vehicle can be equipped with a number of different options for powering the equipment including a high capacity battery bank, an integrated diesel generator, an additional engine driven engine generator and an AC mains power input.

The vehicle carries an assortment of antennas for use as main transmission elements. These may include collinear and Yagi types, depending on each customer’s requirements.

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Deployed Repeater and Leaky Feeder

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erv TypicAl invenTory

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Axell Wireless HeadquartersAerial House, Asheridge Road Chesham,

Buckinghamshire HP5 2QD, United Kingdom Tel: +44 1494 777000 Fax: +44 1494 777002

Axell Wireless Sweden Box 7139, SE-174 07 Sundbyberg, Sweden

Tel: +46 8 475 47 00Fax: +46 8 475 47 99

info@axellwireless.comwww.axellwireless.com

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