Using Rebroadcast Sites for Coverage Enhancement

REBROADCAST REPEATERS MAY BE DEPLOYED INTO:

Bored and cut-and-cover tunnels,underground car-parks andmines experience reducecoverage due the limitedpenetration of network coverageinto such areas.

Rebroadcast Repeaters used fortunnel coverage can also differfrom standard BDA and SignalBooster designs since frequencytranslation and higher per-channel output power cansupport larger signal distributionnetworks (i.e. longer cable runs).

Many buildings experience limitedindoor coverage from outdoornetworks due to small windows, steeland concrete construction orshadowing from neighbouringstructures

Rebroadcast Repeaters used for in-fill coverage applications differ

from standard BDA and Signal Booster designs since their “frequencytranslating” capability also allows maximum power without regard toisolation.

Temporary locations outside the normalnetwork coverage area that may requirecoverage for specific activities such as nationaldisasters or other emergency deployments.

Examples of these are cyclones, floods, bushfiresor other situations where extended coverage orradio density is required.

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Areas within the main coverage area that sufferfrom limited coverage because of localisedtopology, such as the base of steepmountains, rail/roads and narrow valleys.

Rebroadcast Repeaters can also be installedinto “outdoor” situations with omni ordirectional antennas being utilised to optimisetheir coverage to compliment surroundingnetwork coverage performance.

Mountaintop andremote sites that canprovide full coveragefootprints from cost-effective sitedevelopments.Alternatively, such sitescan operate as linkingsites to relay networktransmissions to moredistant locations.The space and powerefficiency of suchinstallations make themidea for solar and

generator powered locations, and the remoteprogramming and status monitoring capabilitiesof these products particularly suits sites withrestricted access.

Figure 1 – Applications

Attenuation of building materials provides sufficient isolation between outdoor and indoor antennas to prevent on-frequency self-feedback.

EXAMPLE OF IN-BUILDING INSTALLATION

INTRODUCTION

Over the years the single biggest problem facing engineers has been “How to delivercoverage into areas that propagation alone will not provide?”. Utilising high power fromnearby network sites to “blast through” coverage obstructions doesn’t always provide apractical solution, and this approach can even create new problems within the network.Another approach to achieving coverage in problem areas (or “black spots”) is to utilise highgain antennas or to focus the RF energy with down-tilt or narrow beamwith antennas. Whilethis approach has proven useful and successful in many situations, this concept assumesthat the RF achieved through these techniques has the ability to propagate into the desiredlocations. Locations such as areas hidden by mountains, hills, buildings, or other RF-blocking obstacles do not always allow direct propagation solutions.

SIGNAL BOOSTER VS REBROADCAST ARCHITECTURE

In some applications, Signal Boosters (also called BroadbandBDA’s) that amplify the directly radiated signal have provenuseful for buildings and higher frequency applications wherethe signal-deficient areas are close to the host site or severelyobstructed. However, any requirements for high values ofgain is a major design limitation of Signal Boosters thatcannot be overcome. The gain of a Signal Booster, or moreimportantly their amount of radiated signal is limited by theamount of isolation between the incoming (Donor) andradiated (Outbound) signals.

In a typical Rebroadcast Repeater architecture design thefrequencies of the donor network can be rebroadcast on-frequency (also called "non-translating" mode) when sufficientisolation between the Inbound (donor) and Outbound (re-radiated) signals can be obtained within the design toprevent self-feedback of the repeater. This is generally onlyachievable in in-building and in-tunnel applications where theInbound donor-facing and Outbound radiating antennas canbe sufficiently isolated by the RF-shielding characteristics ofconstruction materials or rock.

Alternatively, the frequencies of the host system can betranslated to different frequencies (called "translating" mode).

Figure 2 – In-building:Typical Non-Translatinginstallation

Using Rebroadcast Repeaters for Coverage Enhancement

CREATING A WIDE AREA RF “DISTRIBUTED ANTENNA SYSTEM”RFI’s Rebroadcast Repeaters may be used in applications where existing network coverage isn’t

available in locations of interest, such as geographically remote areas, in-building, in-tunnel or

other coverage black-spot locations. These units may also be used as Rapid Deployment

Equipment or where the existing coverage boundary of the network requires extending.

The Inbound-to-Outbound frequency guardband that this translation creates allows the rebroadcastarchitecture to operate with high gain and/or high per-channel RF output levels, without self-feedback,and negates the application limitations imposed by on-frequency rebroadcast - particularly for use inoutdoor applications when installed on tower sites.

Figure 3: Typical Frequency Translating installation

Some network protocols are compatible with frequency-translation, when terminal configuration (i.e. voting, scanning or hunt capabilities) can incorporate the new frequencies that the translationprocess has created. However some network protocols require the rebroadcast frequencies to berestored to the original host frequency plan - particularly if channel numbering or frequency informationis embedded within the protocol format. This restoration can be achieved by using a secondRebroadcast Repeater. This double-translation process maintains an isolation guardband at eachfrequency translation point, again allowing high gain and/or high RF output levels to be implemented.

Figure 4: Typical Double-Translation installation

Using frequency translation, Rebroadcast Repeater architecture deployment is no longer limited byfactors such as antenna isolation or front to back ratios, system gain or rebroadcast RF output levels.The use of this architecture, and its independence from these design limitations simplifies the provisionof coverage enhancement using Rebroadcast Repeaters.

F1

NETWORK SITE

NETWORK SITE COVERAGE AREA

OHs 1, 3, 5 & 7in this area

F1

REBROADCAST SITE COVERAGE AREA

REBROADCAST SITE

CHs 2, 4, 6 & 8in this area

translated to

NETWORK SITE COVERAGE AREA REBROADCAST SITE COVERAGE AREA

F1NETWORK SITE CHs 1, 3, 5 & 7

TRANSLATION:Creates guard bandfor Rebroadcast Site

TRANSLATION:Creates guard bandfor Rebroadcast Site

F1REBROADCAST SITECHs 1, 3, 5 & 7

CHs 21, 23, 25 & 27

TRANSLATION:Restores host frequencies,

guard band creates isolation

REBROADCAST ARCHITECTURE VS NETWORK SITES

RFI's Rebroadcast architecture is designed to be deployed to provide where:

Coverage in-fill or enhancement where a conventional network site build would not beas cost effectiveSubscriber density (i.e. required capacity) is not highThe priority or budget to provide coverage within an area is deemed as "low"The provision of traditional backhaul links is not available or feasibleThe scale of site development is desired to be minimised due to environmental,planning or other restrictions.

This technology rebroadcasts existing network channels from a donor site within thehost network, enhancing coverage by extending existing channels into new coverageareas or existing coverage area black-spots. It does not provide additional networkchannel capacity. In this regard, this architecture does not replace core network sites or the localised call capacity that network sites can provide in the coverage areas they serve.

The Remote site used in this architecture can radiate at up to 30W (or +45 dBm) perchannel, with optional 100W power amplifiers also available for some models. TheseRF output powers can provide coverage footprints similar to full network sites, and areideal for specific coverage areas as outlined below.

APPLICATIONS FOR REBROADCAST ARCHITECTURE

Rebroadcast architecture can be deployed as coverage enhancement solutions fora diverse range of applications including:

Rural areas outside the main network coverage areaRegions outside the main network coverage areas often have low subscriberdensities that do not justify large channel capacities; the provision of core backhaulinfrastructure, or the high cost of major site development.

Remote valleys, isolated towns or communities

Geographically isolated locations such as remote valleys, satellite townships ordistant communities can be provided with coverage to enable network users tooperate within these areas.

Rebroadcast architecture suits a wide range of

applications offering translating and non-translating

capabilities.

Tourism locations (ski resorts, beaches, etc)Localised coverage requirements such as tourist venues, ski resorts, weekendretreats, isolated coastal locations and other such locations can be provided withcoverage without the relatively expensive cost of developing full network sites.Such is the case where coverage requirements are seasonal or event orientated.

Transport corridors (road, rail, etc)Major transport corridors within a wide-area network can be provided withcoverage for transitory users during their travel between cities. Examples of thiscan include highways, rail tracks and waterways. Capacity requirements in suchareas are often minimal, and the cost-efficiency of this architecture deploymentmeans that transport corridors can be provided with extensive coverage.

Tunnels (road, rail or mines)As part of transport or mining infrastructure, tunnels often require the rebroadcastof networks within them for law enforcement, incident management, generaloperations or maintenance. This architecture can provide a range of solutionsbenefits in these applications, including high RF power outputs to feed longradiating cable and/or multiple antenna signal distribution systems.

In-building applications Similar to tunnel applications, in-building solutions can be designed using thefrequency translating created isolation and output power benefits of thisarchitecture. Such solutions can be of significant benefit in buildings with verylarge floor areas, or that utilise large amounts of glass.

Off-shore oil drilling rigs, processing plants and portsSurrounding the main coverage area there can specific areas or infrastructurethat may require reliable coverage for safety, operational or maintenancepurposes. Examples of this may be off-shore platforms that need tocommunicate back to on-shore facilities and personnel, industrial processingplants that are located outside cities to minimise visual or environmental impact,or ports that may be located at convenient deep-water locations outside the mainpopulation zones covered by a network.

Temporary & Rapid Deployment communications sitesNetworks supporting activities such as law-enforcement, military or otheroperations-critical communications may not be tolerant of network outagesresulting from routine maintenance obligations or faults. This architecture pre-installed into vehicle trailer or removable shelters can provide the operatorsof these networks with a temporary or rapid deployment coverage capability.Temporary deployment can also include event-specific coverage requirementssuch as short term rentals, search-and-rescue or fire-fighting activities that mayoccur in areas normally without main network coverage. The installation wouldrequire simply aiming the donor directional antenna toward the donor site andapplying power. There is no network backhaul, system setup, or other networkprogramming required.

INSTALLING RFI REBROADCAST REPEATER ARCHITECTURE

This architecture is divided into three different components. These components are the buildingblocks for the different rebroadcast repeater architecture configurations.

The first component of the rebroadcast system architecture is the "Host" (or donor) site. The host site is anormal network base station site, producing RF signals containing the voice (and/or data) modulationrequired for interaction with the network users' terminals. The host site becomes the donor providing signalsto the second component, the "Base" unit. The Base unit translates the sampled donor RF to differentfrequencies (a link frequency set), ready for transmission to the third component of the rebroadcast systemarchitecture, the "Remote" unit interaction with the network user’s terminals.

The Base unit serves the RF to Remote sites. Therefore dedicated backhaul links (such as microwave,leased lines or fibre) are not required in a rebroadcast architecture design, significantly reducing deploymentcosts and resulting cost of site developments. The reduction in site development also has implications forUPS and/or mains power scaling – with additional cost benefits.

In designs not using double translation theRemote unit(s) typically receive their donornetwork signals directly "off-air", and a Baseunit is not required.

The Base unit can obtain its donor signalvia directly sampling of RF from the hostsystem (refer Figure 5), or it can remotelysample the donor signal "off-air" (referFigure 6). When obtaining the donor signaloff-air, the Base unit can be located somedistance from the host system to increasethe area of coverage. The radiated signalcan be transmitted directly to a singleRemote repeater site using directionalantennas or may broadcast to multipleRemote repeaters using an omnidirectionalantenna. Obtaining the signal directly fromthe host system reduces filtering andhardware requirements. Where possiblethis is the most advantageous means ofconnection.

Remote locations can be easily provided with

network coverage without expensive backhaul or

large-scale site development.

BASE UNIT

REMOTE UNITOUTBOUND

INBOUND

HOST SITE

REMOTE UNITBASE UNIT

Link 1Frequency Plan

Link 2Frequency Plan

Figure 6 – Off-air Base Unit

Figure 5 – Direct Sampled Base Unit

For most trunking applications, a Base unit is required to broadcast to a Remote unit. This is necessarybecause the donor network site’s frequency plan must match the rebroadcast frequencies, as channelnumbering and/or specific frequency information is embedded in many protocols. However, for in-building,in-tunnel, conventional and some other specific protocols, a Base unit is often not required and theRemote unit can receive directly off air from the host network site.

The third component of this architecture, the Remote repeater, is located at a remote site. The Remoteunit’s function is to capture RF signal from the donor site, translate it, and repeat it at a high outputlevel.

The Remote unit can receive frequencies within any of the bands of operation fitted into the unit. Thisflexibility of frequency planning allows this architecture to adapt to the frequencies available instead offorcing the customer to adapt to the frequency of operation. The output frequency is not slaved to theinput frequency and cross band operation is available. The Remote unit normally transmits to an omniantenna, but the use of directional or sectorised pattern antennas also allow custom coverage footprintsto be achieved.

For operation, a Remote repeater must be located within RF line-of-site of a donor network site.However, if this is not possible, a Rebroadcast repeater can also be used as a Rebroadcast Link.

Rebroadcast links extend rebroadcast architecture into additional areas of coverage. These links canrun down highways, into valleys, over mountains, or along rivers. The coverage obtained from these

links acts to bridge normal coverage intoareas either not accessible or economicallyviable. Multiple Rebroadcast Links can becascaded, potentially providing shadowarchitectures extending over hundreds ofmiles (or kilometres) of coverageenhancement. Throughout the extendedcoverage area, full communicationsfunctionality and operation will be available.

This linking ability allows a greater distanceto be covered utilising rebroadcast

architecture with multiple links cascaded if required (as determined by terrain and path losses), with adesign’s limitation being the total delay from the host network site to the most distant Remote unit - andthat delay’s compatibility with any network protocol timing constraints. Existing implementations haveallowed for multiple link deployments that cover many hundreds of kilometres. Because of this delay,some designs will require coverage planning to be optimised to minimise coverage overlap betweensites. Designs utilising different network and rebroadcast frequencies at each site do not require thisdesign consideration.

In one chassis, some channels can be configured to be used as a Remote repeater and others as aLink - performing both of these features in the same chassis (refer Figure 8).

HOST SITE

REMOTE UNITBASE UNIT

Link 1Frequency Plan

Link 2Frequency Plan

Figure 7 – Linking

COVERAGE FOOTPRINT AND LINK DISTANCES

Fundamentally, the coverage obtained from a Remote unit is a function of RF radiated power, antennaheight and terrain features.

Figure 8 – Typical Rebroadcast Architecture

Equally applicable to the coverage footprint from the main network, propagation modelling can becompleted based on these parameters to determine the coverage that could be expected from eachRemote unit site within a rebroadcast architecture design – based on the various applicableperformance parameters.

Between rebroadcast architecture sites, the distances that can be achieved by Rebroadcast Links willbe determined by the RF radiated power, antenna height, antenna gain and terrain and other obstaclesthat may infringe on the link’s RF path. Typically, link distances between sites of up to 80 kilometres (50 miles) are feasible. Multiple cascaded links will extend this distance.

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Figure 9 – Typical cascaded Links

Point-to-Point links can also be implemented using

this product. The RF-transparent operation of this

architecture allows many protocols to be transported.

REBROADCAST ARCHITECTURE FREQUENCY USE

In most trunked radio applications the rebroadcast architecture rebroadcasts all channels from the hostnetwork site. This 1:1 relationship between the number of frequencies at the donor site and Remote unit(s)ensures any channel utilised at the host network site is repeated into the rebroadcast coverage area. Insome applications this 1:1 relationship may not be necessary, depending on the configuration andfunctional capabilities of the host network’s technology and/or terminal equipment.

Each remote unit channel frequency will have an associated link frequency. Normally the Remote and linkfrequencies will be different to provide interference isolation, although in some underground, tunnel or in-building applications it is possible to use common host and link frequencies, as sufficient isolation betweenthe link and rebroadcast antennas can be achieved by the ground or walls between them.

In many architecture deployments utilising different link and rebroadcast frequencies eliminates the need forisolation and allows for higher power transmissions. Selecting the link frequencies will depend onfrequency availability and local frequency licensing requirements.

One of the most flexible capabilities of this Rebroadcast architecture is its ability to also perform cross bandoperation. Cross band operation allows the translation from one frequency band to another. For example, ifthe primary frequency plan is operating in the 400 MHz – 420 MHz range, the link frequency plan can beany other frequency that is available in the product range - such as 800 MHz or upper UHF (450 MHz – 470MHz). Similarly cross band operation can allow the interconnection between different networks, with onenetwork’s traffic being frequency translated to another network’s frequency and linked together (i.e, a UHFmetro network to communicate with a VHF rural system). This capability is sometimes restricted by networkprotocols, but in conventional and some specific protocols this capability allows multiple networks to beinterconnected “seamlessly”.

As Links are operating “point-to-point”, they have higher interference immunity. Network frequencies thatare not useable on network sites because of interference, environmental noise, or co-channel operationissues are often successfully used as link frequencies.

In addition, the use of high gain directional antennas provide not only improved system gain but alsoimprove isolation to signals originating from locations behind or to the side of the directional antenna.Additionally link frequencies operate without regard to Raleigh fading or other path variations. This allowsfor a much higher reliability for a given fade margin – particularly over long linking distances.

FEATURES VS PRICE BENEFITS

Deploying rebroadcast architecture to provide coverage footprint in appropriate geographic areas orlocations has an additional benefit - it compliments competitive bid preparation and pricing.

Low-density coverage can be more cost-effectively provided, with the cost benefits multiplying if low-density coverage requirements are extensive within a network’s specification (i.e. small high-densityurban coverage or large areas of low-density rural coverage).

This architecture is RF-transparent, with all network features capability and functionality being repeatedthroughout the coverage area by the deployment of shadow architecture. Reductions realised through

reduced backhaul and site development costs can be channelled into the core network offering. This may allow enhanced functionality, higher tiered or larger quantities of terminals to be competitively offered to the customer – differentiating the overall bid, without compromising (and often improving) the extent of the overall network coverage offered.

In addition, future coverage enhancement into remote, in-fill or in-building locations can be offered cost-effectively, potentially creating more competitive “later phases” of the network build as part of the overall infrastructure network offer.

PRODUCT FLEXIBILITY

Rebroadcast architecture provides an easily configurable platform for deployment. Many of theoperating parameters are user-programmable with frequency, gain, RF output power, transmitter gating,

alarm thresholds and other parameters being configurable on a per-channel basis via the integral web-server or alternately via the USB or RS232 interfaces. All programmable parameters (and firmware upgrades) are also remotely accessible via an in-built cellular (or external leased line) modem. Customised software features can also be provided, including host network control channel monitoring, alternate donor site re-routing and more.

These products are designed to be easily expanded, reconfigured and maintained in the field. All modules are "hot-swappable" in a plug and play concept, with expansion or replacement modules being fitted without an outage at the site, ensuring the highest service levels of coverage to be maintained.

The chassis architecture features "cable-less" design, with all modules automatically connecting when seated. This allows modules to be quickly and easily removed and inserted, without specialised tools or time-consuming connectors to be loosened or tightened. The omission of cabling between modules also reduces the possibility of cabling damage or failure and eliminates incorrect re-connection of internal cabling after expansion or maintenance activities.

Multiple frequency sub-bands or bands can be installed within one chassis, with additional expansion chassis’ able to be cascaded from the first chassis to provide extra module capacity for expansion frequency bands and/or channels. Using this dynamic expansion capability, a single system can be implemented to provide rebroadcast of multiple channels, across

DSP Rebroadcast Unit

The implementatin of a cable-less, plug-and-play

modular construction provides a hot-swappable

capability that realises maintenance benefits and

maximises operational availablility.

multiple frequency bands, to provide the rebroadcast of multiple networks. For example, an In-tunnel system could be configured to provide the rebroadcast of UHF analogue, 800MHz digital, and Cellular networks all within one system! RFI's comprehensive range of filtering, combining and other products compliments this multi-band capability as we can also provide all of the associated items required to design and supply these systems.

These units offer exceptional installation efficiency. Up to eight (8) bi-directional channels can be installed within a single 4RU 19” rack mount chassis. If desired, these can be configured as sixteen (16) separate transceivers, or 8 link/transceiver paired sets. In addition, the RF outputs of these channels can be internally or externally combined, depending on application requirements. For example, all outputs being used as links may be internally combined, with the one common output being applied to a link yagi antenna. Alternatively, each channel output could be connected to an external low-loss cavity

combiner, to provide maximum per-channel output power forconnection to an omnidirectional antenna to achieve a maximisedcoverage footprint when emulating a base station site. Theflexibility to internally or externally combine in differentcombinations allows the realisation of the optimum solution foreach type of deployment scenario.

Many operational parameters are user-programmable. DSPprocessing allows many characteristics to be configured on aper-channel basis, in either the uplink or downlink direction,independently of each other. The characteristics of each channelwithin the chassis can be programmed to suit the network(s)being rebroadcast. In this way, different frequencies and channelresponses can be programmed to allow multiple networks to berebroadcast within a single chassis. Alternatively, per-channelcharacteristics can be changed "on-the-fly" as a user movesdown a technology migration path - i.e. from analogue to digital,or from 25KHz to 12.5KHz, or both.

All active modules contain an embedded electronic identificationcode. Any module within the chassis, or any replaced or added,will have its serial and model numbers recorded within thechassis controller. This information is accessible locally orremotely and can provided current and comprehensive data forasset management, fault and spares tracking activities. Passwordprotected access prevents unauthorised access to units andprotects operational integrity and security.

DSP Repeater (Rear View)

Configurable, per channel response

ALARM AND NETWORK MANAGEMENT CAPABILITY

RFI’s rebroadcasts units are programmable. Each rebroadcast unit can be supplied with an integral cellular modem, or it can be connected to a local PC or leased line modem via the Ethernet, USB or RS232 ports.

Parameters such as frequency, gain, RF output level, Tx gating thresholds and alarm thresholds are all configurable on a per-channel basis via the cellular modem, local PC or via an external modem. Alarm and operation status monitoring can be on-event or polled, and firmware upgrades can also be uploaded if required.

A Network Management System software application could also be used to support this architecture. This NMS could provide the ability for on-event or polled monitoring of all rebroadcast sites in a network and display screens provide site details, current equipment configurations, equipment status, alarm monitoring, and status and an alarm log.

PROTOCOL COMPATIBILITY

RFI’s rebroadcast architecture is currently widely deployed in conventional, trunked, analogue and digital systems. Single translation can be utilised in conventional and some trunking systems, but many trunking protocols require that the original network donor site's frequency plan must be presented to the subscriber unit in the rebroadcast coverage area. RFI’s Rebroadcast architecture can provide double translation to satisfy this functionality when required.

Typical NMS Site Details and Configuration screen configuration

Typical NMS Site Alarm Status screen configuration

Typical NMS Site Log screenconfiguration

Programmable configurability coupled with

detailed alarm and status monitoring features

provides operators with comprehensive network

management capabilities.

These repeaters are used for providing coverage enhancement inpoor signal areas. Models are available with programmablefrequency, RF output power, gain and alarm configurations to suita wide range of applications. They may be programmed for non-frequency translating or frequency translating operation.

The unit’s flexibility in programming makes them suitable for arange of network coverage enhancement requirements, includingin-building, in-tunnel or outdoor applications. In many networkdesigns, the use of these units can provide multi-site coveragefrom single-site network controller architecture. Additionalfrequency bands and/or channels can be easily added to theDSPR, allowing multiple frequencies or technologies (i.e. UHF/Cellular) to be deployed as required.

The DSPR series is currently available in Channel Selective variants, allowing high per-channel RF output powers and compliance with regulatory requirements - particularly in outdoorapplications. Many operational parameters are configurablethrough the programming interface - including frequency, gain,gating, alarms and reporting. The unit’s own high-stability frequency reference can be further enhanced using an internalGPS receiver and status monitoring and alarm reporting is available via TCPIP, USB, RS232 or integral cellular modem.

Power efficient design, compact size and advanced remotecontrol and alarming firmware make the DSPR series an economicalternative to additional base stations within a network because oftheir small size, lower cost, simple installation and minimalmaintenance requirements.

Frequency Translating or non Frequency Translating operation

Capacity from 1 to 8 channels

Internal or External Channel Combining

“Plug-n-Play” modular configuration

Easily expandable to add additional frequency bands and/orchannel capacity

TCPIP, USB, RS232 or Cellular Modem connectivity

Compact Size - 19" 4RU Rack Mounting

ACMA Compliant

Product in Focus:

DSP Rebroadcast Repeaters

DSPR SERIES

Specification

Note: These products are available in various configurations. Please contact your nearest RFI Sales Office to discuss specification applicationrequirements. As part of our product improvement program, specifications may be subject to change without notice”

Model Number DSPbR® Series - configuration dependent

Available Frequency Bands (MHz) 150-174132-152 403-420 410-430 450-470 470-490 480-500 500-520 746-766 786-806 805-825 850-870

Maximum Channel / Band capacity per chassis Up to 8Ch for 1 or 2 Bands / Up to 7Ch for 3 BandsModes of operatio ull Duplex, on Frequency and or Frequency/Band Translating

Output Power - per RFBE (dBm) max +45+ 43

Output Power adjustment range (1dB steps) +30dBm to maxOutput Power - MCPA mode per carrier (ACMA compliant)

+15dBm

Output Power adjustment range MCPA Mode (1dB steps)

0dBm to +15dBm

Gain Range (1dB steps) UL & DL, translating mode 70-135dBGain Range (1dB steps) UL & DL, non-translating mode

70-130dB

ALC (Automatic Level Control) > 30dB

Total MCPA channel capability per chassis 12 or 24Ch (DSP module and slot location dependent)

RF Channel spacing (KHz ypical 6.25, 12.5 and 25 (other filter profiles available on request)

Noise Figure (max) - No ALC 6dB

Receiver sensitivity (typical 116dBm

Tx spurious emissions < -30dBm

Frequency Translating Erro 100Hz

External frequency reference/disciplining options 10MHz and GPS

Maximum input power - RFFE without damage +10dBm

User Access - Ethernet 2 levels of user name and password control

User Interface - Ethernet GUI (Web browser enabled Graphical User Interface)

Configuration and Alarm diagnostics connectivit thernet port / cellular modem

Alarm Interface termination connector ia rear mounted DB15 connector

System Impedance

RF UL & DL Input and output termination connector (F)RF disciplining & cell modem antenna termination connectors

SMA (F)

Power Supply options 24VDC / 48VDC or Mains 85-265VAC (50/60Hz)

Cooling Active - Fan assisted.

Installation environment Indoor

Chassis Earthin 6 Earth stud on chassis rear

Dimensions (single 4RU chassis) W 483 x D 460 x H 178mm / W 19 x D 18.1 x H 7"

Weight (fully populated) 38kgs / 83.6lbs

Operational temperature range -30° C to +60° C / -22° F to 140° F

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For further information, contact your nearest RFI Sales Office

SYDNEY (Head Office)Locked Bag 2007Seven Hills NSW 1730Ph: +61 2 8838 0900Fax: +61 2 9630 0844

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