Powerwave Technologies 5JS0034 CELLULAR AMPLIFIER User Manual USERS MANUAL

Powerwave Technologies Inc CELLULAR AMPLIFIER USERS MANUAL

USERS MANUAL

044-05058 Rev. AINSTALLATION & SERVICEMANUALMULTICHANNELPOWER AMPLIFIERG3L-800-25-001869-894 MHz25 WATTS AVERAGE POWER15 JANUARY 1999Powerwave Technologies, Inc. Tel: 949-757-05302026 McGaw Avenue Fax: 949-757-0941Irvine, CA 92614 Web Site: www.powerwave.com®
2TABLE OF CONTENTSPar. Section 1 PageNo. General Description No.1-1 Introduction .............................................................................................1-11-2 General Description ...............................................................................1-11-3 Functional and Physical Specifications...................................................1-1Section 2Installation2-1 Introduction .............................................................................................2-12-2 Electrical Service Recommendations......................................................2-12-3 Unpacking and Inspection.......................................................................2-12-4 Installation Instructions............................................................................2-22-5 Amplifier Module Power, Alarm, Control, and RF Connector..................2-22-6 Amplifier Module RS-232 Connector.......................................................2-4Section 3Operating Instructions3-1 Introduction .............................................................................................3-13-2 Initial Start-Up and Operating Procedures ..............................................3-1Section 4Principles of Operation4-1 Introduction .............................................................................................4-14-2 RF Input Signal .......................................................................................4-14-3 RF Output Load.......................................................................................4-14-4 Amplifier Functional Description..............................................................4-14-4.1 Predriver Amplifier...................................................................................4-14-4.2 Three Stage Driver Amplifier...................................................................4-14-4.3 Main Amplifier .........................................................................................4-24-4.4 Alarm Monitoring and Control..................................................................4-24-4.5 Loop Control Circuit ................................................................................4-24-5 Amplifier Module Cooling ........................................................................4-24-6 Power Distribution ...................................................................................4-2
3TABLE OF CONTENTS (Continued)Par. Section 5 PageNo. Maintenance No.5-1 Introduction .............................................................................................5-15-2 Periodic Maintenance..............................................................................5-15-3 Test Equipment Required For Test.........................................................5-15-4 Performance Test....................................................................................5-25-4.1 Amplifier Performance Test.....................................................................5-25-5 Field Replacement of the Module ...........................................................5-7Section 6Troubleshooting6-1 Introduction .............................................................................................6-16-2 Troubleshooting ......................................................................................6-16-3 Return for Service Procedures................................................................6-16-3.1 Obtaining an RMA...................................................................................6-16-3.2 Repackaging for Shipment......................................................................6-1LIST OF ILLUSTRATIONSFigure PageNo. No.1-1 G3L-800-25-001 Amplifier Showing Front Panel.....................................1-31-2 G3L-800-25-001 Amplifier Showing Rear Panel .....................................1-42-1 Power, Alarm, Control, and RF Connector (D-Subminiature 21WA4, MaleConnector) .........................................................................................................2-32-2 RS-232 Connector (on Rear of G3L-800-25-001 Module) ......................2-44-1 G3L-800-25-001 Multi Channel Power Amplifier Functional Block Diagram4-25-1 G3L-800-25-001 Amplifier Test Setup Diagram......................................5-3LIST OF TABLESTable PageNo. No.1-1 G3L-800-25-001 Multichannel Power Amplifier Functional Specifications1-22-1 Amplifier Module Power, Alarm, Control, and RF Connector Definition ..2-32-2 Amplifier Module RS-232 Connector Definition.......................................2-45-1 Periodic Maintenance..............................................................................5-15-2 Test Equipment Required .......................................................................5-2
45-3 Multichannel Power Amplifier Test Data Sheet.......................................5-46-1 Troubleshooting ......................................................................................6-1
5SectionGENERAL DESCRIPTION1-1. INTRODUCTIONThis manual contains information and procedures for installation, operation, andmaintenance of Powerwave’s model G3L-800-25-001 multichannel poweramplifier. The manual is organized into six sections as follows:Section 1. General DescriptionSection 2. InstallationSection 3. Operating InstructionsSection 4. Principles of OperationSection 5. MaintenanceSection 6: Troubleshooting1-2. GENERAL DESCRIPTIONThe G3L-800-25-001 (see figures 1-1 and 1-2) is a linear, multichannel poweramplifier that operates in the 25 MHz frequency band from 869 MHz to 894 MHz.It is designed as a self-contained module with EMI containment for use in bothindoor and outdoor North American cellular base stations. The G3L-800-25-001accepts single channel and transmit voice RF signals. The G3L-800-25-001 usesan internally generated tone to optimize its performance. The system operatingband (A or B) is externally provided to the G3L-800-25-001 so that it knows wherethe tone frequency is going to be. If the operating band is A, then a tone at Bband is generated; if the operating band is B, then a tone at A band is generated.Each amplifier module has a power, alarm, and control connector that allows thehost system to monitor the amplifier module performance. Primary power for theamplifier is +27 Vdc.1-3. FUNCTIONAL AND PHYSICAL SPECIFICATIONSFunctional and physical specifications for the amplifier are listed in table 1-1.1
6Table 1-1. G3L-800-25-001 Multichannel Power Amplifier Functional SpecificationsFrequency Range 869-894 MHz (25 MHz Bandwidth)Maximum Average Input Power -13 dBmContinuous Average Output Power 25 WattsSpurious Emissions -60 dBc maximum (820 MHz – 900 MHz)-50 dBc maximum (all other frequencies)RF Gain 57±0.5 dBGain Flatness: ±0.5 dB (869 MHz – 894 MHz)Gain Variation(Temperature and Voltage) ±0.7dB (From 25 ºC, across specified temperature range.)±0.7dB (From 27 V, across specified voltage range.)Output Protection: Mismatch ProtectedInput Port Return Loss: -12 dB at any given power levelOperating Temperature: 0 ºC. to +50 ºC. (room ambient)Storage Temperature: -40 ºC. to +65 ºC. (room ambient)Operating Humidity: 5% - 95% Relative Humidity (noncondensing) not to exceed0.024 grams of water per gram of dry air.Storage Humidity: 5% - 95% Relative Humidity (noncondensing)DC Input, Alarm, and ControlConnector: 21WA4 (male, D-sub)RF Input Connector: 21WA4 (male, D-sub)RF Output Connector: 21WA4 (male, D-sub)Phase 180±5 degrees (measured at 880 MHz, 25 ºC, any power level)Phase Tracking ±10 degrees (from 25 ºC, across specified temperature range)IMD -60 dBc (8 carriers, continuous phase random, equal carrierspacing of 1.25 MHz. Any power up to maximum average outputpower.)Output Return Loss -18 dB (at any power level)Harmonic Output -45 dBc (at any number of carriers, any power level.)Communications RS-485 interface for control and statusStatus Indicators: POWER ON:MINOR:MAJOR:Green LED = Power appliedYellow LED = Minor alarm (loop failure)Red LED = Major alarm (module failure and shut down)Internally Generated Alarms Over temp., DC over voltage, Overpower, VSWR, Loop fail.Externally Generated Alarms Fan failure: Open collector pulled low = amp functioningOpen collector floating high = amp failureHot Swap Capable Unit is capable of being replaced without shutting down power.DC Input Power: +27±0.1 Vdc, 260 mV p-p max. ripple, ≤350 wattsPower Supply Current 15 amps max. (at max. RF power out)Overload Protection 20 A (circuit breaker / on-off switch)Dimensions (inches): Height: 13.82; width: 2.64; depth: 15.57
7Figure 1-1. G3L-800-25-001 Amplifier Showing Front Panel15.572.6413.82MINORMAJOR
8Figure 1-2. G3L-800-25-001 Amplifier Showing Rear Panel21WA4 Male D-Sub Connector21WA4 D-Sub Connector
9SectionINSTALLATION2-1. INTRODUCTIONThis section contains unpacking, inspection, and installation instructions and recommendations forthe Model G3L-800-25-001 Multichannel Power Amplifier. Carefully read all material in this sectionprior to equipment unpacking or installation. Also read and review the operating procedures inSection 3 prior to installing the equipment. It is important that the licensee perform these taskscorrectly and in good faith. If applicable, carefully read Parts 73 and 74 of the FederalCommunications Commission (FCC) rules to determine how they apply to your installation. DON'TTAKE CHANCES WITH YOUR LICENSE.2-2. ELECTRICAL SERVICE RECOMMENDATIONSPowerwave Technologies recommends that proper AC line conditioning and surge suppression beprovided on the primary AC input to the +27 Vdc power source. All electrical service should beinstalled in accordance with the National Electrical Code, any applicable state or local codes, andgood engineering practice. Special consideration should be given to lightning protection of allsystems in view of the vulnerability of most transmitter sites to lightning. Lightning arrestors arerecommended in the service entrance. Straight, short ground runs are recommended. Theelectrical service must be well grounded.Each amplifier system should have its own circuit breaker, so a failure in one does not shut off thewhole installation. Circuit breakers should be thermal type, capable of handling the anticipatedinrush current, in a load center with a master switch.2-3. UNPACKING AND INSPECTIONThis equipment has been operated, tested and calibrated at the factory. Carefully open thecontainer(s) and remove the amplifier module(s). Retain all packing material that can bereassembled in the event that the unit must be returned to the factory.CAUTIONExercise care in handling equipmentduring inspection to prevent damagecaused by rough or careless handling.Visually inspect the amplifier module for damage that may have occurred during shipment. Checkfor evidence of water damage, bent or warped chassis, loose screws or nuts, or extraneous packingmaterial in the connector. If the equipment is damaged, a claim should be filed with the carrieronce the extent of any damage is assessed. We cannot stress too strongly the importance ofIMMEDIATE careful inspection of the equipment and the subsequent IMMEDIATE filing of thenecessary claims against the carrier if necessary. If possible, inspect the equipment in thepresence of the delivery person. If the equipment is damaged, the carrier is your first area ofrecourse. If the equipment is damaged and must be returned to the factory, write or phone for areturn authorization. Powerwave may not accept returns without a return authorization. Claims forloss or damage may not be withheld from any payment to Powerwave, nor may any payment duebe withheld pending the outcome thereof. WE CANNOT GUARANTEE THE FREIGHTCARRIER'S PERFORMANCE2
102-4. INSTALLATION INSTRUCTIONSThe G3L-800-25-001 amplifier module is designed for installation in a subrack that permits accessto the subrack for connection of DC power, RF, and monitor cables.To install the amplifier proceed as follows:1. Install subrack in equipment rack or cabinet and secure in place. 2. Connect antenna cable to subrack. 3. Connect the transceiver output(s) to subrack. 4. Connect RS-232 cable to subrack.5. Connect alarm and control cables to subrack. WARNINGVerify that all circuit breaker switches on the subrackare in the OFF position. Turn off external primary DCpower before connecting DC power cables. 7. Connect positive primary power and negative primary power to the subrack. Tighten thesubrack power connections.8. Place power on/off switch on the amplifier front panel in the “off” (down) position. Insert theplug-in amplifier module(s) in the subrack. Tighten top and bottom thumbscrews. 9. Check your work before applying DC voltage to the system. Make certain all connections aretight and correct. 10. Measure primary DC input voltage. DC input voltage should be +27 Vdc ±1.0 Vdc. If the DCinput voltage is above or below the limits, call and consult Powerwave before you turn on youramplifier system. 11. Refer to section 3 for initial turn-on and checkout procedures.2-5. AMPLIFIER MODULE POWER, ALARM, CONTROL, AND RF CONNECTORThe power, alarm, control, and RF connections on the amplifier are made through a 21WA4 maleconnector (figure 2-1) and are listed and described in table 2-1.
11TTaabbllee 22--11.. AAmmpplliiffiieerr MMoodduullee PPoowweerr,, AAllaarrmm,, CCoonnttrrooll,, aanndd RRFF CCoonnnneeccttoorr DDeeffiinniittiioonnPIN SIGNAL I/O SIGNAL NAME1 GROUND - -2 RxD+ DATA IN SERIAL-RS4853 RxD- DATA IN SERIAL-RS4854 TxD+ DATA OUT SERIAL-RS4855 TxD- DATA OUT SERIAL-RS4856 RACK A2 ADDRESS IN (MSB) GROUND PIN FOR A HIGH,FLOAT FOR A LOW7 RACK A1 ADDRESS IN (MiddleSB) GROUND PIN FOR A HIGH,FLOAT FOR A LOW8 RACK A0 ADDRESS IN (LSB) GROUND PIN FOR A HIGH,FLOAT FOR A LOW9NOT USED10 AMP A2 ADDRESS IN (MSB) GROUND PIN FOR A LOW,FLOAT FOR A HIGH11 FAN FAIL INPUT GROUND PIN FOR A LOW,FLOAT FOR A HIGH12 AMP A1 ADDRESS IN (MiddleSB) GROUND PIN FOR A LOW(PASS),FLOAT FOR AHIGH(FAIL)13 NOT USED14 AMP A0 ADDRESS IN (LSB) GROUND PIN FOR A LOW,FLOAT FOR A HIGH15 NOT USED16 NOT USED17 NOT USEDA1 RF INPUT PDM 24 SERIES COAXA2 Vin SOURCE TYPICALLY 27 VOLTS DCA3 GROUND - POWER SUPPLY RETURNA4 RFOUTPUT PKZ 26 SERIES COAXIAL CONNECTOR (50 OHM,.050” CENTER CONTACT)Figure 2-1. Power, Alarm, Control, and RF Connector (D-SubMiniature 21WA4, Male Connector)
122-6. AMPLIFIER MODULE RS-232 CONNECTORThe RS-232 connection on the amplifier is made through a 4-pin male Molex connector (figure 2-2).The connector is defined in table 2-2.Figure 2-2. RS-232 Connector (on Rear of G3L-800-25-001 Module)TTaabbllee 22--22.. AAmmpplliiffiieerr MMoodduullee RRSS--223322 CCoonnnneeccttoorr DDeeffiinniittiioonnPINNUMBER DESCRIPTION1 RS-232 Rx2 RS-232 Tx3 Summary Alarm4 GroundOPERATING INSTRUCTIONS3-1. INTRODUCTIONThis section contains operating instructions for the Multicarrier Amplifier.3-2. INITIAL START-UP AND OPERATING PROCEDURESTo perform the initial start-up, proceed as follows:1. Double check to ensure that all input and output cables are properly connected.CAUTIONBefore applying power, make sure that the input and output of theamplifier are properly terminated at 50 ohms. Do not operate theamplifier without a load attached. Refer to table 1-1 for input powerrequirements. Excessive input power may damage the amplifierNOTEThe output coaxial cable between the amplifier and the antenna mustbe 50 ohm coaxial cable. Use of any other cable will distort the output.Section3
132. Turn on supply that provides +27 Vdc to the amplifier system.3. Place power on/off switch on the amplifier front panel in the “on” (up) position.4. Turn on external exciter/transceiver and apply RF input signals.PRINCIPLES OF OPERATION4-1. INTRODUCTIONThis section contains a functional description of the G3L-800-25-100 MultichannelPower Amplifier.4-2. RF INPUT SIGNALThe maximum input power should not exceed the limits specified in table 1-1.4-3. RF OUTPUT LOADThe load impedance should be as good as possible (1.5:1 or better) in the workingband for good power transfer to the load.4-4. AMPLIFIER FUNCTIONAL DESCRIPTIONThe G3L-800-25-001 amplifier (figures 1-1, 1-2, and 4-1) is a linear, multichannelpower amplifier that operates in the 25 MHz frequency band from 869 MHz to 894MHz at an output power of 25 watts. Each amplifier is a self-contained moduleand is functionally independent of any other amplifier modules in the system.Each amplifier module has an alarm board that monitors the amplifierperformance. If a failure or fault occurs in an amplifier module, it is transmitted tothe host system via the D-subminiature 21Wa4 connector at the rear of themodule.The amplifier is compliant to the requirements of FCC Part 22 and TIA/EIA IS97Awith respect to spurious emissions. Constant gain is maintained by continuouslycomparing active paths with passive references, and correcting for smallvariations through the RF feedback controls. All gain variations, for examplethose due to temperature, are reduced to the passive reference variations. Theamplifier module is comprised of:A preampA driver amplifierA main amplifierAn error and preerror amplifierSection4
14Alarm monitoring and control4-4.1. PREDRIVER AMPLIFIERThe input of the amplifier employs two stages of class AB amplification whichprovide approximately 13.5 dB of gain in the 25 MHz frequency band from 869MHz to 894 MHz. The amplifier operates on +27 Vdc.4-4.2. THREE STAGE DRIVER AMPLIFIERThe input of the amplifier employs three stages of class AB amplification whichprovide approximately 32 dB of gain in the 25 MHz frequency band from 869 MHzto 894 MHz. The amplifier operates on +27 Vdc.
154-4.3. MAIN AMPLIFIERThe main amplifier employs class AB amplification for maximum efficiency. Thesignal provides approximately 11 dB of gain in the 25 MHz frequency band. Theoutput from the main amplifier is typically 30 watts. The amplifier operates on +27Vdc, and a bias voltage of +5 Vdc, and is mounted directly on a heat sink. Thealarm logic controls the +5 Vdc bias voltage that shuts down the amplifier.4-4.4. ALARM MONITORING AND CONTROLIn the amplifier, all normal variations are automatically compensated for by theloop control circuit. However, when large variations occur beyond the adjustmentrange of the loop control, a loop fault will occur. The alarms are output via a21WA4 D-sub connector on the module for subsequent remote monitoring.4-4.5. LOOP CONTROL CIRCUITThe primary function of the loop control circuit is to reduce the spurious emissionsof the RF signal at all amplifier stages. The loop control circuit controls internalamplifier parameters of all amplifier stages, thereby optimizing spuriousemissions.4-5. AMPLIFIER MODULE COOLINGEach amplifier module is contained within a thermally conductive finned chassiswhich, when properly cooled with external fans, will provide sufficient cooling tomaintain the amplifier within the specified operating temperature range.4-6. POWER DISTRIBUTIONFigure 4-1. G3L-800-25-001 Multichannel Power Amplifier Functional BlockDiagramLOOP CONTROL CIRCUITRFINControl Control32 dBGain11 dBGainThree StageDriver Main AmpRFOUTALARM CIRCUITPredriver13.5 dBGain
16Primary DC power for the amplifier is provided by the host system. The amplifiermodule has a DC/DC converter that converts the +27 Vdc to +15 Vdc, +5 Vdc,and +8 Vdc for internal use.MAINTENANCE5-1. INTRODUCTIONThis section contains periodic maintenance and performance test procedures for the MultichannelPower Amplifier. It also contains a list of test equipment required to perform the identified tasks.NOTECheck your sales order and equipmentwarranty before attempting to service orrepair the unit. Do not break the seals onequipment under warranty or the warrantywill be null and void. Do not returnequipment for warranty or repair serviceuntil proper shipping instructions arereceived from the factory.5-2. PERIODIC MAINTENANCEPeriodic maintenance requirements are listed in Table 5-1. Table 5-1 also lists the intervals atwhich the tasks should be performed.Table 5-1. Periodic MaintenanceTASK INTERVAL ACTIONInspectionCables andConnectors 12 Months IInnssppeecctt ssiiggnnaall aanndd ppoowweerr ccaabblleessffoorr ffrraayyeedd iinnssuullaattiioonn.. CChheecckk RRFFccoonnnneeccttoorrss ttoo bbee ssuurree tthhaatt tthheeyyaarree ttiigghhtt..Performance Tests 12 Months PPeerrffoorrmm aannnnuuaall tteesstt ppeerrppaarraaggrraapphh 55--55..5-3. TEST EQUIPMENT REQUIRED FOR TESTTest equipment required to test the amplifier is listed in Table 5-2. Equivalent test equipment maybe substituted for any item, keeping in mind that a thermistor type power meter is required.NOTEAll RF test equipment must be calibrated to 0.05dB resolution. Any deviation from the nominalattenuation must be accounted for and factoredinto all output readings.Section5
17Table 5-2. Test Equipment RequiredMENCLATURE MANUFACTURER MODELSignal Generator H.P. 8656B20 dB Attenuator, 250 Watt Tenuline20 dB Attenuator, 20 Watt (2 each) TenulineSpectrum Analyzer H.P. 8560ECoax Directional Coupler H.P. 778DPower Meter / Sensor H.P. 437B / 8481AArbitrary Waveform Generator Sony AWG2021Network Analyzer H.P. 8753CCurrent ProbeSource Diskette PowerwaveCDMA Generator Noise Com 800-15-4. PERFORMANCE TESTPerformance testing should be conducted every 12 months to ensure that the amplifier systemmeets the operational specifications listed in table 5-3. Also verify system performance after anyamplifier module is replaced in the field. The test equipment required to perform the testing is listedin table 5-2, and the test setup is shown in figure 5-1.NOTEThe frequencies used in this test are typical for an amplifier with a25 MHz band from 869 MHz to 894 MHz. Select evenly spacedF1, F2, F3, and F4 frequencies that cover the instantaneousbandwidth of your system.5-4.1. AMPLIFIER PERFORMANCE TEST.To perform the test, proceed as follows:1. Connect test equipment as shown in figure 5-1.NOTEDo not apply any RF signals at this time.AMPLIFIER SPURIOUS EMISSIONS TEST:2. With the RF input signal to the amplifier set to be as shown in figure 5-2, use the spectrumanalyzer to measure the spurious emissions performance. Record test data in table 5-3.Verify that it is within the specifications shown in table 1-1. Switch tested amplifier to OFF.GAIN TEST:3. Disconnect spectrum analyzer from test setup, and connect the network analyzer.4. Set network analyzer as follows:a. Power output to -13 dBm.b. Frequency start to 869 MHz.c. Frequency stop to 894 MHz.d. Normalize the network analyzer for gain and return loss.5. Check the amplifier gain across the band from 869 MHz to 894 MHz. Gain should be asspecified in table 1-1. Record test data in table 5-3.
18INPUT RETURN LOSS TEST:6. Read and record the S11 return loss measurement on network analyzer. Record test data intable 5-3.Figure 5-1. G3L-800-25-001 Amplifier Test Setup Diagram
19Table 5-3. Multichannel Power Amplifier Test Data SheetDATE__________________________________MODULE S/N ___________________________TEST CONDITIONS:Load and Source Impedance: 50 OhmsVSWR: < 1.2:1Supply Voltage: +27 Vdc ±0.1 VdcTEST SPECIFICATION MIN MAX DATARF Gain Vcc = 27 VdcPO = 25 WFreq. = 880 MHzTable 1-1-0.5 dB Table 1-1+0.5 dBSpuriousEmissions Vcc = 27 VdcPO =25 W869 - 894 MHz Band-60 dBcGain Flatness Vcc = 27 VdcPO =25 W869 - 894 MHz Band±0.5 dBInput ReturnLoss Vcc = 27 VdcPO = 25 W869-894 MHz Band-12 dBPASS FAIL Tested by
205-5. FIELD REPLACEMENT OF THE MODULEThe G3L-800-25-001 multichannel power amplifier module can be replaced in the field on site by aqualified technician with experience maintaining RF power amplifiers and similar equipment:To replace a power amplifier module, proceed as follows:1. Set on/off switch on the front panel of the amplifier module to OFF (down).2. Loosen two thumbscrews that secure amplifier module to subrack.CAUTIONWhen removing the amplifier from the subrack, it is very importantto support the amplifier such that the rear of the module does notsuddenly drop when the guide rail disengages from the track. Adrop such as this could damage the rear 21WA4 multipinconnector.3. With steady even pressure, use handle on front of amplifier to pull module out ofsubrack.4. Install replacement in reverse order of steps 1 through 3 above.TROUBLESHOOTING6-1 INTRODUCTIONThis section contains a list of problems which users have encountered and a few suggested actionsthat may correct the problem. If the suggested corrective action does not eliminate the problem,please contact your Powerwave field representative or the factory for further instructions.NOTECheck your sales order and equipmentwarranty before attempting to service orrepair the unit. Do not break the seals onequipment under warranty or the warrantywill be null and void. Do not returnequipment for warranty or repair serviceuntil proper shipping instructions arereceived from the factory.6-2 TROUBLESHOOTINGRefer to table 6-1 for troubleshooting suggestions.Table 6-1. Troubleshooting.SYMPTOM SUGGESTED ACTIONG3L-800-25-001 Inoperative 1. Check for proper power supply voltage.2. Verify all RF connections.Section6
213. Verify that unit does not have a major fault (red LED onfront panel). Recycle power.6-3 RETURN FOR SERVICE PROCEDURESWhen returning products to Powerwave, the following procedures will ensure optimum response.6-3.1 Obtaining an RMAA Return Material Authorization (RMA) number must be obtained prior to returningequipment to the factory for service. Please contact our Customer Service Department at(949) 757-0530 to obtain this number. Failure to obtain this RMA number may result inconsiderable delays in receiving repair service.6-3.2 Repackaging for ShipmentTo ensure safe shipment of the amplifier, it is recommended that the package designed forthe amplifier be used. The original packaging material is reusable. If it is not available,contact Powerwave’s Customer Service Department for packing materials and information.

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