MASTHEAD AMPLIFIER FAMILY

Building solutionsthrough teamwork.

REMEC Masthead Amplifiershelp reduce the cost of base stationdeployment by extending cellcoverage by 20-40%.

They also significantly improve callquality and reduce the number ofdropped calls which is the numberone reason for customer “churn”.

900MHz MHA Family from REMEC ALP Enabled™

• Market leading low noise performance

• Simple to install

• Rugged and highly reliable

• Excellent lightning protection

• Full water immersion (IP68)specification

• By pass in power down mode

FEATURES

• Extends cell coverage 20%-40%

• Significantly reduces roll out costs

• Improves call quality

• Reduces dropped calls

• Better in-building coverage

• Increases handset battery life

• Reduces bit error rate - vital for data applications

USER BENEFITS

REMEC MHAsimprove in-buildingcoverage and reduce overallsystem bit error rate whichbecomes increasinglyimportant for dataapplications.

These units have the bestnoise and lightningprotection performanceavailable and are IP68 ratedfor full water submersion.

Time and time againnetwork trials have proventhese units to significantlyimprove networkperformance, providing thelargest improvementmargins in competativebench marking. Over fiftynetworks world wide haveimproved their performanceusing REMEC MHAs.

ENVIRONMENTAL

OPERATING TEMPERATURE -40 ºC to+65ºC -40 ºC to+65ºC -40 ºC to+65ºC -40 ºC to+65ºCRELATIVE HUMIDITY 5 TO 95% 5 TO 95% 5 TO 95% 5 TO 95%

ENCLOSURE IP68 IP68 IP68 IP68EMC ETS 300 342-3 ETS 300 342-3 ETS 300 342-3 ETS 300 342-3

LIGHTNING PROTECTION

BTS port 8/20µS 10kA Pulse 8/20µS 10kA Pulse 8/20µS 10kA Pulse 8/20µS 10kA Pulse(IEC-801-5) (IEC-801-5) (IEC-801-5) (IEC-801-5)

ANT port DC grounded DC grounded DC grounded DC grounded

MTBF >500,000 hrs >500,000 hrs >500,000 hrs >500,000 hrs

SUPPLY (standard unit - see LNA voltage selections for other options)*

VOLTAGE +12V ± 1V DC +12V ± 1V DC +12V ± 1V DC +12V ± 1V DC

CURRENT (nominal) 125mA normal 125mA normal 125mA normal 125mA normal175mA alarm 175mA alarm 175mA alarm 175mA alarm

RECEIVE PATH

FREQUENCY RANGE 880-915 MHz 880-915 MHz 880-915 MHz 880-915 MHzNOISE FIGURE (ambient) <1.5 dB <1.6 dB <1.6 dB <1.6 dB

GAIN VARIATION (over freq and temp) 12.0 ± 0.8 dB 12.0 ± 0.85 dB 12.0 ± 0.85 dB 12.0 ± 1.0 dBGAIN VARIATION (over freq) ± 0.25 dB ± 0.3 dB ± 0.3 dB ± 0.5 dBOUTPUT 1dB COMPRESSION +10 dBm +10 dBm +10 dBm +10 dBm

OUTPUT IP3 +22 dBm +22 dBm +22 dBm +22 dBmLOSS IN BYPASS MODE (ambient) <1.6 dB <1.8 dB <1.8 dB <1.7 dB

RETURN LOSS (VSWR) >18dB active (<1.29:1) >18dB active (<1.29:1) >18dB active (<1.29:1) >18dB active (<1.29:1)>14dB bypass (<1.5:1) >14dB bypass (<1.5:1) >14dB bypass (<1.5:1) >14dB bypass (<1.5:1)

GAIN REDUCTION

>60 dBc 100kHz – 50 MHz 100kHz – 50 MHz 100kHz – 50 MHz 100kHz – 50 MHzfrom Rx edge from Rx edge from Rx edge from Rx edge

>40 dBc Rx edge-15 MHz Rx edge-15 MHz Rx edge-15 MHz Rx edge-13 MHz>6 dBc Rx edge-8 MHz Rx edge-8 MHz Rx edge-6 MHz Rx edge-7 MHz>6 dBc Rx edge+6 MHz Rx edge+3.5 MHz Rx edge+3.5 MHz Rx edge+10 MHz>40 dBc Rx edge+15MHz Rx edge+15MHz Rx edge+15MHz Rx edge+13MHz

>80 dBc Tx to 4GHz Tx to 4GHz Tx to 4GHz Tx to 4GHz>15 dBc 4 to 12.75 GHz 4 to 12.75 GHz 4 to 12.75 GHz 4 to 12.75 GHz

Rx TO Tx REJECTION(over operating band) >80 dB >80 dB >80 dB >80 dB

MASTHEAD AMPLIFIER FAMILY

TECHNICAL PERFORMANCEOPERATING BANDWIDTH 12.5 MHz 15 MHz 17.5 MHz 25 MHz

TRANSMIT PATH

FREQUENCY RANGE 925-960 MHz 925-960 MHz 925-960 MHz 925-960 MHzINSERTION LOSS <0.50 dB <0.55 dB <0.60 dB <0.60 dB

RIPPLE ± 0.1 dB ± 0.1 dB ± 0.1 dB ± 0.1 dBMAXIMUM POWER HANDLING 50 dBm CW 50 dBm CW 50 dBm CW 50 dBm CW

RETURN LOSS (VSWR) >18dB(<1.29:1) >18dB(<1.29:1) >18dB(<1.29:1) >18dB(<1.29:1)

INTERMODULATION (2Tx carrierat +43dBm products in Rx band) <-110 dBm <-110 dBm <-110 dBm <-110 dBm

900MHz MHA Family from REMEC

MECHANICAL

SIZE312x162x103mm 312x162x103mm 312x162x103mm 312x162x103mm(ex. Connectors) (ex. Connectors) (ex. Connectors) (ex. Connectors)

VOLUME 5.2 ltr 5.2 ltr 5.2 ltr 5.2 ltrWEIGHT <5.9 kg <5.9 kg <5.9 kg <5.9 kg

CONNECTORS 7/16 DIN female 7/16 DIN female 7/16 DIN female 7/16 DIN female

ENVIRONMENTAL PROTECTION

The REMEC MHA is one of the few available whichis fully sealed and certified to IP68 requirements includingfull water immersion testing to a depth of 1 metre.

The REMEC MHA has also been fully certified byCulham Laboratories for lightning protection which isan important consideration in many territories.The standard unit achieves 10kA tested with an 8/20µSpulse to IEC-801-5. However, 20kA protection is availableas an option.

Power to the MHA is provided by a Power Distribution Unit(PDU). Bias Tees route the power and control signalsthrough the centre conductor of the RF antenna cables,eliminating the need to install separate cables. The PDUalso monitors MHA performance and produces alarms thatare forwarded to the operations and maintenance centre(OMC).

Within the REMEC MHA, parallel low noiseamplifiers allow the unit to operate at a reduced gain if acomponent fails. A bypass switch ensures that, in theunlikely event that the MHA powers down, the base station and antenna system remain operational.

The REMEC MHA is simple to install, requires nomaintenance and is highly reliable. Field support teams areavailable to conduct comprehensive training courses andprovide assistance during installation.

OPTIONS

When using your own power supply unit or another supplydirect from the BTS you need to specify the LNA alarmwindow and voltage requirement. The REMEC MHAsupports three standard alarm windows and a wideoperating voltage range. The MHA will be configured toyour specified requirement prior to delivery.

• LNA Alarm window configuration

• LNA Voltage selection*REMEC MHA’s are available with 9 to 15 VDCoperating voltage.

When using the REMEC Power Distribution Unit,the MHA will be supplied with our standard settings.(See accessory data sheet for further details).

COSTED OPTIONS• 2-12dB variable gain LNAFor many site situations it is beneficial to be able to set theLNA gain to a particular level to take into account theattenuation of the specific RF feeder cables.This enables site by site optimisation.

In these instances we strongly recommend selecting ourALP controlled 2-12dB variable gain LNA which can beadjusted on site using a laptop PC or remotely via theuniversal controller. (See accessory data sheet for furtherdetails).

• Lightning protectionThe standard REMEC MHA provides for lightningprotection of up to 10kA tested to IEC-801-5. In countrieswhere severe electric storms are experienced you may wishto have an increased level of protection. In these cases weare able to offer an MHA with lightning protection of20kA.

• High impact resistant lidsWhere problems are experienced with vandalism we are ableto offer units with high impact resistant, bullet proof lids.

• Customer specified logoMany customers would prefer to have their network orcompany logo embossed on the MHA lid. We are pleased tooffer this as an option.

• VSWR Alarm MonitoringThe VSWR alarm circuit continuously monitors the returnloss in the Tx path (including the antenna). If the return lossdegrades below a predetermined limit then an alarm israised via ALP to the universal controller.

• Automatic Fault Feeder DiagnosisUsing a communications package and laptop pc, throughALP, MHAs are able to diagnose feeder line intermittentfaults.

• Extended WarrantyVarious extended warranty packages are available.

TxFilter

RxFilter

RxFilter

Bias Tee

BTS Port &DC Feed

Antenna Port

LNA &BypassSwitch

Alarm Window No.

Nominal Current

Alarm Current

1

125mA

175mA

2

155mA

205mA

3

90mA

175mA

Building solutionsthrough teamwork.

MASTHEAD AMPLIFIER FAMILY

MASTHEAD AMPLIFIER FAMILY

Building solutionsthrough teamwork.

This document gives only a general description of the product(s) and shall not form part of any contract.

UKSmeaton CloseAylesburyBuckinghamshireHP19 8SU

Tel: +44 (0) 1296 319319Fax: +44 (0) 1296 319200

USA9404 Chesapeake DriveSan Diego, CA 92123

Tel: +1 858 560 1301Fax: +1 858 560 0291

FAR EASTSuite 2-05, 2nd FloorWisma Ali Bawal 211 Jalan Tandang46050 Petaling JayaSelangor Darul Ehsan Malaysia

Tel: +603 7785 1270Fax: +603 7785 1249

CHINARoom 1419 China TravelService TowerNo 2 East Beisanhuan RoadChaoyang DistrictBeijing 100028People’s Republic of China

Tel: +8610 64646111Fax: +8610 64646333

Accessories available as part of the REMECMHA Family

• Indoor or Outdoor Power Distribution Unit (PDU)

• Indoor or Outdoor Bias Tee units

• Cable Kits

• Mounting Kits

• Setting Systems for Variable Gain MHAs

• Site Test Equipment

• Cross Band Couplers

More details about accessoriesare available on individualdata sheets

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Remec Inc, SASan Jose, Costa Rica

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