PHX-RBTS2500Non-Line of Site Wireless Data Link

i Configuring, Installing, and Using Carrier Infrastructure Broadband Wireless Access System Part Number: 104-0100-0004 ii BaseConnect, Expedience, NetProvision, and ProvisionLink are trademarks of NextNet Wireless, Inc. ©2000-2004 NextNet Wireless, Inc. All rights reserved. WARNING: This equipment has been tested with a 19 dBi gain antenna and found to comply with the FCC guidelines for Radio Frequency Radiation Exposure Limits as detailed below. For a single base 5 watt transmitter connected to the antenna, a minimum of 2 meters or 6.5 feet of separation between the antenna and all persons must be maintained. The minimum separation increases when additional base transmitting signals are combined and applied to the same antenna. Four base 5 watt transmitters combined to use a single antenna need a minimum separation of 4 meters or 13 feet from all persons. Radio Frequency Radiation Exposure Limits. f = frequency in MHz * = Plane-wave equivalent power density NOTE 1 TO TABLE 1: Occupational/controlled limits apply in situations in which persons are exposed as a consequence of their employment provided those persons are fully aware of the potential for exposure and can exercise control over their exposure. Limits for occupational/controlled exposure also apply in situations when an individual is transient through a location where occupational/controlled limits apply provided he or she is made aware of the potential for exposure. NOTE 2 TO TABLE 1: General population/uncontrolled exposures apply in situations in which the general public may be exposed, or in which persons that are exposed as a consequence of their employment may not be fully aware of the potential for exposure or can not exercise control over their exposure. Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio-frequency energy, and, if not installed and used in accordance with the installation manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required to correct the interference at their own expense. TABLE 1. Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Electric field- strength (V/m) Magnetic field- strength (A/m) Power density (mW/cm 2) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposures 0.3-3.06141.63*(100)6 3.0-301842/f4.89/f *(900/f 2 ) 6 30-30061.40.1631.06 300-1500——f/3006 1500-100,000——56 (B) Limits for General Population/Uncontrolled Exposure 0.3-1.346141.63*(100)30 1.34-30824/f2.19/f *(180/f 2 ) 30 30-30027.50.073.230 300-1500——f/150030 1500-100,000——1.030 iii NextNet Wireless, Inc. recommends the following antennas for base station installations: This Class A digital apparatus complies with Canadian ICES-003. THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRENTY OF ANY KIND. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCT. NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE ARE PROVIDED “AS IS” WITH ALL FAULTS. NEXTNET WIRELESS DISCLAIMS ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FOM A COUSRE OF DEALING, USAGE, OR TRADE PRACTICE. IN NO EVENT SHALL NEXTNET WIRELESS OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOST PROFITS OR LOSS OF DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF NEXTNET WIRELESS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. TABLE 2. Technical Information Transmitting power1m watts to 2 watts 1m watts to 5 watts (high power option) Operating voltage120 VAC nominal Frequency band2500 - 2686 MHz TX/RX Frequency stability±1.0 ppm Number of channels31 Channel bandwidth6 MHz ModulationOrthogonal frequency division multiplex TransmissionTime division duplex/time division multiplex TABLE 3. Recommended antennas for base station installations ManufacturerAntenna typeModel/part number Stella Doradus120 degree vertical polarization 18 dBi gain 26 12005V Stella Doradus90 degree vertical polarization 19 dBi gain 26 9005V Stella Doradus90 degree vertical polarization 17 dBi gain 26 9007.5NV Stella Doradus90 degree horizontal polarization 19 dBi gain 26 9005H Til-TekOmni vertical polar- ization 10 dBi gain TA-2550 iv v CONTENTS About this guide Preface overview .............................................................................. xiii About this guide .............................................................................. xiii Chapters in this guide ........................................................................................ xiv Additional documentation ............................................................... xiv Typographical conventions this guide uses ......................................xv Where to go for more help ............................................................... xvi Technical support............................................................................................... xvi Documentation additions and corrections ..................................................... xvi Introduction to backhaul installations Chapter overview .............................................................................. 1-1 System overview ................................................................................ 1-1 System overview ..............…

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FCC ID: PHX-RBTS2500 Page 1 of 1 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 2 Attestation Statement Cover Letters Exhibit 2 FCC ID: PHX-RBTS2500 Attestation Statement Page 2 of 2 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 The measurements performed on the test sample for this FCC product Certification were performed by me or by personnel under my direction. Tim Blom Principal Engineer Exhibit 2 FCC ID: PHX-RBTS2500 Attestation Statement Page 3 of 3 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Cover Letters Gentlemen: This report is being submitted to the Federal Communications Commission for the certification of equipment pursuant to 47 CFR Telecommunication CHAPTER I FEDERAL COMMUNICATIONS COMMISSION, Parts 1, 2, 15, 21, and 74 deemed as current in the Federal Register as of March 15, 2004. FCC Rule Part Description Response 0.457dii Records not routinely available for public inspection See exhibit 13 0.459 Requests that materials or information submitted to the Commission be withheld from public inspection. See exhibit 13 2.1033(c)1 The full name and mailing address of the manufacturer of the device and the applicant for certification. NextNet Wireless, Inc. 9555 James Avenue South, Suite 270 Bloomington, MN 55431 2.1033(c)2 FCC identifier. PHX-RBTS2500 2.1033(c)3 A copy of the installation and operating instructions. See information located within exhibit 8 2.1033(c)4 Type or types of emission. 21.905(b): OFDM / 5M53W7D 74.936(a): OFDM / 5M53W7D 2.1033(c)5 Frequency range. 2500 – 2686 MHz 2.1033(c)6 21.909(g)2 74.939(g)2 Range of operating power values or specific operating power levels, and description of any means provided for variation of operating power. 0.001 Watts – 2 or 5 Watts Power is adjustable by system operator. 2.1033(c)7 Maximum power rating as defined in the applicable part(s) of the rules. 21.904(b): 33 dBW EIRP 74.935(b): 33 dBW EIRP 2.1033(c)8 The dc voltages applied to and dc currents into the several elements of the final radio frequency amplifying device for normal operation over the power range. See block diagram in exhibit 4 2.1033(c)9 Tune-up procedure over the power range, or at specific operating power levels. See tune-up information in exhibit 12 2.1033(c)10 A schematic diagram and a description of all circuitry and devices provided for determining and stabilizing frequency, for suppression of spurious radiation, for limiting modulation, and for limiting power. See schematics in exhibit 5. See circuit descriptions in exhibit 12. 2.1033(c)11 A photograph or drawing of the equipment identification plate or label showing the information to be placed thereon. See exhibit 1 Exhibit 2 FCC ID: PHX-RBTS2500 Attestation Statement Page 4 of 4 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 2.1033(c)12 Photographs (8”x10”) of the equipment of sufficient clarity to reveal equipment construction and layout, including meters, if any, and labels for controls and meters and sufficient views of the internal construction to define component placement and chassis assembly. Insofar as these requirements are met by photographs or drawings contained in instruction manuals supplied with the certification request, additional photographs are necessary only to complete the required showing. See photographs in Exhibit 9 2.1033(c)13 For equipment employing digital modulation techniques, a detailed description of the modulation system to be used, including the response characteristics (frequency, phase and amplitude) of any filters provided, and a description of the modulating wavetrain, shall be submitted for the maximum rated conditions under which the equipment will be operated. See Exhibit 12 2.1033(c)14 The data required by §§ 2.1046 through 2.1057, inclusive, measured in accordance with the procedures set out in § 2.1041 See Test Report measurements in Exhibit 6 2.1033(c)15 The application for certification of an external radio frequency power amplifier under part 97 of this chapter need not be accompanied by the data required by paragraph (b)(14) of this section. In lieu thereof, measurements shall be submitted to show compliance with the technical specifications in subpart C of part 97 of this chapter and such information as required by § 2.1060 of this part. Not applicable 2.1033(c)16 An application for certification of an AM broadcast stereophonic exciter-generator intended for interfacing with existing certified, or formerly type accepted or notified transmitters must include measurements made on a complete stereophonic transmitter. The instruction book must include complete specifications and circuit requirements for interconnecting with existing transmitters. The instruction book must also provide a full description of the equipment and measurement procedures to monitor modulation and to verify that the combination of stereo exciter-generator and transmitter meet the emission limitations of § 73.44. Not applicable 2.1033(c)17 A single application may be filed for a composite system that incorporates devices subject to certification under multiple rule parts, however, the appropriate fee must be included for each device. Not applicable Exhibit 2 FCC ID: PHX-RBTS2500 Attestation Statement Page 5 of 5 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Test Report Summary CFR Rule Part Requirement Test Result 1.1310 Radio Frequency Radiation Exposure Limits Pass 2.1046 21.904(a) 74.935(a) RF Output Power Pass 2.1047 21.905(b) 74.936(a) Modulation Characteristics Pass 2.1049 21.908(a) 74.936(c) Occupied Bandwidth Pass 2.1051 Spurious Emissions at Antenna Terminals Pass 2.1053 Field Strength of Spurious Radiation Pass 2.1055 Frequency Stability Pass 2.1091 Radio Frequency radiation exposure evaluation: mobile devices. Pass Exhibit Summary Exhibit Section Contents 1 FCC ID Lab…

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FCC ID: PHX-RBTS2500 Page 1 of 5 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 3 External Photographs Exhibit 3 FCC ID: PHX-RBTS2500 External Photographs Page 2 of 5 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Front view (transceiver) Back view (transceiver) Exhibit 3 FCC ID: PHX-RBTS2500 External Photographs Page 3 of 5 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Chassis front view (2 watt and 5 watt) Exhibit 3 FCC ID: PHX-RBTS2500 External Photographs Page 4 of 5 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Chassis rear view (2 watts) Exhibit 3 FCC ID: PHX-RBTS2500 External Photographs Page 5 of 5 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Back view (5 watt)

FCC ID: PHX-RBTS2500 IC: 4022A-RBTS2500 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South, Suite 270 Page 1 of 1 Bloomington, MN 55431 Exhibit 1 Labeling Requirements and Information Exhibit 1 FCC ID: PHX-RBTS2500 Labeling Requirements IC: 4022A-RBTS2500 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South, Suite 270 Page 2 of 2 Bloomington, MN 55431 4/13/2004 NextNet Wireless, Inc. 9555 James Avenue South Suite 270 Bloomington, MN 55431 RE: FCC and Industry Canada Labeling Requirements FCC ID: PHX-RBTS2500 IC: 4022A-RBTS2500 The following label information is required by the FCC and Industry Canada Rules and Regulations for certified devices. Thank you for your attention to these matters. Sincerely, Tim Blom NextNet Wireless, Inc. Exhibit 1 FCC ID: PHX-RBTS2500 Labeling Requirements IC: 4022A-RBTS2500 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South, Suite 270 Page 3 of 3 Bloomington, MN 55431 ID Label / Location Information The FCC / Industry Canada ID label is attached to the base station unit with a permanent adhesive. Label Sample Photo showing label location on base unit FCC ID: PHX-RBTS2500 IC: 4022A-RBTS2500 Part Number: 900-0160-1XXX ||||||| ||||| ||||| |||||||||| SN: 1234X123XAAX87654321 ||||||| |||||||||||| |||||| |||||| |||| NextNet ® Wireless Inc., Minneapolis, MN 55431 USA This device complies with Part 15 of the FCC Rules and Canadian ICES-003. RBTS-2500-A

FCC ID: PHX-RBTS2500 Page 1 of 1 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 Internal Photographs Exhibit 9 FCC ID: PHX-RBTS2500 Internal Photographs Page 2 of 2 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 RF Board Component Side (no shields) RF Board Solder Side Exhibit 9 FCC ID: PHX-RBTS2500 Internal Photographs Page 3 of 3 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Logic Board Component Side Logic Board Solder Side Exhibit 9 FCC ID: PHX-RBTS2500 Internal Photographs Page 4 of 4 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Power Supply Board Component Side Power Supply Board Solder Side Exhibit 9 FCC ID: PHX-RBTS2500 Internal Photographs Page 5 of 5 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Power / Fuse Board Component Side Power / Fuse Board Solder Side Exhibit 9 FCC ID: PHX-RBTS2500 Internal Photographs Page 6 of 6 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Alarm Connector Board Component Side Alarm Connector Board Solder Side Exhibit 9 FCC ID: PHX-RBTS2500 Internal Photographs Page 7 of 7 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Chassis Top View Chassis Bottom View Exhibit 9 FCC ID: PHX-RBTS2500 Internal Photographs Page 8 of 8 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Bottom Cover (outside) Top Cover (outside) Bottom Cover (inside) Top Cover (inside) Exhibit 9 FCC ID: PHX-RBTS2500 Internal Photographs Page 9 of 9 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 RF Board and RF Filter RF Board, RF Filter, Fans, Power Supply Board, and Front Cover Exhibit 9 FCC ID: PHX-RBTS2500 Internal Photographs Page 10 of 10 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Logic Board, RF Board, RF Filter, Fans, Power Supply Board, and Front Cover Complete Transceiver Exhibit 9 FCC ID: PHX-RBTS2500 Internal Photographs Page 11 of 11 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Rack Chassis Front View Exhibit 9 FCC ID: PHX-RBTS2500 Internal Photographs Page 12 of 12 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Rack Chassis Back View

Exhibit 11 FCC ID: PHX-RBTS2500 Radio Frequency Exposure NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Page 1 of 10 Bloomington, MN 55431 Exhibit 11 RF Exposure Information Exhibit 11 FCC ID: PHX-RBTS2500 Radio Frequency Exposure NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Page 2 of 10 Bloomington, MN 55431 Radio Frequency Radiation Exposure Evaluation Rule Part Number: 1.1307, 1.1310, 2.1091 1.1307 Actions that may have a significant environmental effect, for which Environmental Assessments (EAs) must be prepared. TABLE 1—TRANSMITTERS, FACILITIES AND OPERATIONS SUBJECT TO ROUTINE ENVIRONMENTAL EVALUATION Multipoint Distribution Service (subpart K of part 21). Non-building-mounted antennas: height above ground level to lowest point of antenna < 10 m and power > 1640 W EIRP Building-mounted antennas: power > 1640 W EIRP MDS licensees are required to attach a label to subscriber transceiver or transverter antennas that: (1) provides adequate notice regarding potential radio frequency safety hazards, e.g., information regarding the safe minimum separation distance required between users and transceiver antennas; and (2) references the applicable FCC-adopted limits for radio frequency exposure specified in § 1.1310. Experimental, auxiliary, and special broadcast and other program distributional services (part 74). Subpart I: non-building-mounted antennas: height above ground level to lowest point of antenna < 10 m and power > 1640 W EIRP Building-mounted antennas: power > 1640 W EIRP ITFS licensees are required to attach a label to subscriber transceiver or transverter antennas that: (1) provides adequate notice regarding potential radio frequency safety hazards, e.g., information regarding the safe minimum separation distance required between users and transceiver antennas; and (2) references the applicable FCC-adopted limits for radio frequency exposure specified in § 1.1310. 1.1310 Radio frequency radiation exposure limits. TABLE 1—LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (minutes) (A) Limits for Occupational/Controlled Exposures 1500–100,000 ..................... ...................... ......................... 5 6 (B) Limits for General Population/Uncontrolled Exposure 1500–100,000 ..................... ..................... ...................... 1.0 30 f = frequency in MHz Exhibit 11 FCC ID: PHX-RBTS2500 Radio Frequency Exposure NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Page 3 of 10 Bloomington, MN 55431 Radio Frequency Radiation Exposure Evaluation One base transmitter to one antenna Calculations: The NextNet Wireless Expedience Base Station can operate at a maximum of 5 watts (37 dBm) average power while transmitting. The Base Station is capable of transmitting at a 100 % duty cycle while in test mode. The NextNet Wireless Base Station does not contain an integral antenna; therefore testing will be performed on antennas that are recommended by NextNet Wireless for installation. For this setup, one transmitter is connected to one antenna. The maximum vertical polarization antenna gain is 19 dBi. Therefore the maximum radiated transmit power would be: 100 % Transmit duty cycle: Pmax = Ptx + G(antenna) Pmax = 37 (dBm) + 19 (dBi) = 37 + 19 Pmax = 56 dBim = 398.1 Watts EIRP < 1640 Watts EIRP The maximum horizontal polarization antenna gain is 19 dBi. Therefore the maximum radiated transmit power would be: 100 % Transmit duty cycle: Pmax = Ptx + G(antenna) Pmax = 37 (dBm) + 19 (dBi) = 37 + 19 Pmax = 56 dBim = 398.1 Watts EIRP < 1640 Watts EIRP Exhibit 11 FCC ID: PHX-RBTS2500 Radio Frequency Exposure NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Page 4 of 10 Bloomington, MN 55431 Radio Frequency Radiation Exposure Evaluation Four base transmitters to one antenna Calculations: The NextNet Wireless Expedience Base Station can operate at a maximum of 5 watts (37 dBm) average power while transmitting. The Base Station is capable of transmitting at a 100 % duty cycle while in test mode. The NextNet Wireless Base Station does not contain an integral antenna; therefore testing will be performed on antennas that are recommended by NextNet Wireless for installation. For this setup, four transmitters are connected to one antenna through a four way combiner. The maximum vertical polarization antenna gain is 19 dBi. Therefore the maximum radiated transmit power would be: 100 % Transmit duty cycle: 4 transmitter signals at 5 watts each = 20 watts = 43 dBm Pmax = Ptx + G(antenna) Pmax = 43 (dBm) + 19 (dBi) = 43 + 19 Pmax = 62 dBim = 1584.9 Watts EIRP < 1640 Watts EIRP The maximum horizontal polarization antenna gain is 19 dBi. Therefore the maximum radiated transmit power would be: 100 % Transmit duty cycle: 4 transmitter signals at 5 watts each = 20 watts = 43 dBm Pmax = Ptx + G(antenna) Pmax = 43 (dBm) + 19 (dBi) = 43 + 19 Pmax = 62 dBim = 1584.9 Watts EIRP < 1640 Watts EIRP Exhibit 11 FCC ID: PHX-RBTS2500 Radio Frequency Exposure NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Page 5 of 10 Bloomington, MN 55431 Radio Frequency Radiation Exposure Evaluation Single base into one antenna Calculations: The following calculations can be used to determine the distance from the transmitting antenna that must be maintained to ensure that the exposure limit as defined in Table 1 of part 1.1310 (B) Limits for General Population/Uncontrolled Exposure and part 1.1310 (A) Limits for Occupational/Controlled Exposures. The formula for the following calculations are found in the OET Bulletin 65, edition 97-01 August 1997, “Evaluating Compliance with FCC Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields”. It is noted that the formulas from Bulletin 65 are for prediction of power density in the far-field of the antenna and will over predict the requirements in the near-field. The…

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FCC ID: PHX-RBTS2500 Page 1 of 70 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 6 Text Report Exhibit 6 FCC ID: PHX-RBTS2500 Test Report Page 2 of 70 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 RF Power Output Rule Part Number: 2.1046, 21.904(a)(b), 74.935(a)(b) EIRP = 33 dBW+10log(X/6) dBW+10log(360/beamwidth) dBW X = 6 for this filing 10log(360/beamwidth) ≤ 6dB beamwidth maximum = 360° EIRP maximum = 33 dBW = 1995 W EIRP Test Procedure: The RF output power is measured with a power meter. The RF output is applied to an attenuator that is connected to the power sensor of the power meter. The transmitter is enabled in test mode with the attached computer. Measurements are performed for each of the modulation formats available, 4 QAM, 16 QAM, and 64 QAM. The Tx power for 2 the watt setting is measured at the end of the coax that is used in a base station cabinet. The Tx power for the 5 watt enabled transmitter is measured at the output of the channel filter which is connected to the coax that is used in the base station cabinet. Test Conditions: Frequency = 2503, 2593, 2683 MHz Temperature = 25°C Supply Voltage = 120 Vac / 60 Hz Test Equipment: Spectrum Analyzer Rohde&Schwarz Model: FSEB S/N: 826407 Cal Date: 07-19-2002 Cal Due: 07-18-2004 Power Meter Agilent E4418B S/N: GB41299360 Cal Date: 08-28-2002 Due Date: 08-28-2004 Power Head HP8481A S/N: 1550A08915 Cal date: 05-15-2003 Due Date: 05-15-2005 Directional Coupler Dual Directional Coupler Model: HP777D S/N: 01772 Calibrated by user Exhibit 6 FCC ID: PHX-RBTS2500 Test Report Page 3 of 70 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Attenuators (20 and 30dB) Weinschel Model: 37-20-34 (S/N BM6195) Model: 37-30-34 (S/N BM6212) Calibrated by user Attenuators (6 and 20 dB) Pasternak Corporation Model: PE7005-6 (6 dB) Model: PE7005-20 (20 dB) Calibrated by user Computer Dell Inspiron 3500 Model: TS30T S/N: 9021946BY11687A Ethernet Switch D-Link Model: DSS-5+ 5 port 10/100Mbps S/N: B205335003173 Power Supply Cherokee International, LLC Model: CRP500L1H-1A Test Set-Up: Spectrum Analyzer RF Power Meter and Power Head DUT Power Supply Directional Coupler Ethernet Switch 20 or 30 dB 26 dB Computer 2 watt power level Spectrum Analyzer RF Power Meter and Power Head DUT Power Supply Directional Coupler Ethernet Switch 20 or 30 dB 26 dB Computer MMDS Channel Filter 5 watt power level Exhibit 6 FCC ID: PHX-RBTS2500 Test Report Page 4 of 70 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Test Results: 100 % transmit duty cycle Tx Power: 2 watt setting Minimum Power setting QPSK 16 QAM 64 QAM Freq (MHz) (dBm) (Watts) (dBm) (Watts) (dBm) (Watts) 2503 -0.20 0.00095 -0.15 0.00097 -0.14 0.00097 2593 0.63 0.00116 0.51 0.00112 0.42 0.00110 2683 -0.21 0.00095 -0.36 0.00092 -0.51 0.00089 Maximum Power setting QPSK 16 QAM 64 QAM Freq (MHz) (dBm) (Watts) (dBm) (Watts) (dBm) (Watts) 2503 32.09 1.61808 32.13 1.63305 32.20 1.65959 2593 32.76 1.88799 32.68 1.85353 32.63 1.83231 2683 32.59 1.81552 32.70 1.86209 32.56 1.80302 Tx Power: 5 watt setting (with channel filter) Minimum Power setting QPSK 16 QAM 64 QAM Freq (MHz) (dBm) (Watts) (dBm) (Watts) (dBm) (Watts) 2503 -0.43 0.00091 -0.53 0.00089 -0.58 0.00087 2593 -0.08 0.00098 0.06 0.00101 0.10 0.00102 2683 -0.21 0.00095 -0.43 0.00091 -0.63 0.00086 Maximum Power setting QPSK 16 QAM 64 QAM Freq (MHz) (dBm) (Watts) (dBm) (Watts) (dBm) (Watts) 2503 36.63 4.60257 36.60 4.57088 36.57 4.53942 2593 36.85 4.84172 36.93 4.93174 36.91 4.90908 2683 36.94 4.94311 36.86 4.85289 36.88 4.87528 Exhibit 6 FCC ID: PHX-RBTS2500 Test Report Page 5 of 70 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 RF Power Output Test Conclusions: Vertically Polarized Antenna RF Power Output = 33 dBm Vertical Antenna Gain = 19 dBi Transmitted Power = RF Power + Isotropic Antenna Gain Transmitted Power = 33 + 19 = 52 dBim Transmitted Power = 10*log(2W)+19dBi = 22 dBiW < 33 dBiW Pass: Transmitted Power Output Requirement at 2 watt setting Horizontally Polarized Antenna RF Power Output = 33 dBm Horizontal Antenna Gain = 19 dBi Transmitted Power = RF Power + Isotropic Antenna Gain Transmitted Power = 33 + 19 = 52 dBim Transmitted Power = 10*log(2W)+19dBi = 22 dBiW < 33 dBiW Pass: Transmitted Power Output Requirement at 2 watt setting Exhibit 6 FCC ID: PHX-RBTS2500 Test Report Page 6 of 70 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 RF Power Output Test Conclusions: Vertically Polarized Antenna RF Power Output = 37 dBm Vertical Antenna Gain = 19 dBi Transmitted Power = RF Power + Isotropic Antenna Gain Transmitted Power = 37 + 19 = 56 dBim Transmitted Power = 10*log(5W)+19dBi = 26 dBiW < 33 dBiW Pass: Transmitted Power Output Requirement at 5 watt setting Horizontally Polarized Antenna RF Power Output = 37 dBm Horizontal Antenna Gain = 19 dBi Transmitted Power = RF Power + Isotropic Antenna Gain Transmitted Power = 37 + 19 = 56 dBim Transmitted Power = 10*log(5W)+19dBi = 26 dBiW < 33 dBiW Pass: Transmitted Power Output Requirement at 5 watt setting Exhibit 6 FCC ID: PHX-RBTS2500 Test Report Page 7 of 70 NextNet Wireless, Inc 4/13/2004 9555 James Ave. South Suite 270 Bloomington, MN 55431 Modulation Characteristics Rule Parts: 2.1047(d), 21.905(b), 21.908(a)(e), 74.936(a), 74.936(c) Modulation Characteristics = OFDM 21.905(b) Quadrature amplitude modulation (QAM), digital vestigial sideband modulation (VSB), quadrature phase shift key modulation (QPSK), code division multiple access (CDMA), and orthogonal frequency division multiplex (OFDM) emissions may be employed, subject to compliance with the policies set forth in the Declaratory Ruling and Order, 11 FCC Rcd 18839 (1996). Use of OFDM also is subject to the subsequent Declaratory Ruling and Order, DA 99-554 (Mass Med. Bur. rel. Mar. 19, 1999). 21.908(a) The m…

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