PHX-MMDS-CPE2Non-Line of Site Wireless Data Link

i Installing and using the Expedience OSU-2510 Directions for connecting your OSU to a computer or LAN and obtaining high-speed Internet access. ii Expedience and LinkMonitor are trademarks of NextNet Wireless, Inc. Other brand and product names may be registered trademarks or trademarks of their respective holders. Part number: 104-0009-0001 ©2002 NextNet Wireless, Inc. All rights reserved. THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS GUIDE ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS GUIDE ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY 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 FROM A COURSE 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 GUIDE, EVEN IF NEXTNET WIRELESS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Contents 1 Welcome............................................. 1 Before you begin ................................1 Connecting your OSU to a computer ... 6 Installation overview ..........................6 Setting up the computer to dynamically re- ceive an IP address ............................6 Windows 95, Windows NT, Windows 98, Windows ME: Setting up the network con- nection .............................................7 Windows 2000: Setting up the network connection ........................................7 Installing the OSU ..............................8 Attaching the NIM box to the outside of house .............................................13 Cabling overview ..............................16 Running cables through house’s wall ...17 Plugging cables into NIM box .............17 Connecting ground wires ...................18 Plugging in power cord and RJ-45 cord 19 Finding the strongest service provider sig- nal .................................................19 Using the software-assisted method to find the strongest signal ..........................21 Using the sound (auditory) method to find the strongest signal ..........................22 Connecting to the Internet ................22 Refreshing the OSU’s connection ...... 23 Windows users: Refreshing the connection ......................................23 Non-Windows users: Refreshing the connection ......................................23 2 Connecting the OSU to a network ..... 24 FCC information ...............................25 1 Welcome This document describes how to install and use your Expedience outdoor subscriber unit (OSU) to obtain wireless high-speed Internet access. You can connect your OSU to a computer or to a small office/ home office (SOHO) local area network (LAN) through a hub, switch, or router. BEFORE YOU BEGIN •Make sure your computer is equipped with an Ethernet network interface card (NIC). •The Ethernet cable that is supplied with your OSU plugs into any standard Ethernet NIC. The NIC is not provided with the OSU, but you can purchase a NIC at most computer and electronics stores. •Make sure you have purchased an RJ-45 cable. The length of this cable depends on where you plan to install the OSU on your house. •Make sure you have purchased grounding wire of sufficient length to run between the OSU and a grounding pole. Also, you need to purchase grounding wire to run between the NIM box and the grounding rod. •The grounding wire you purchase should be an 8 gauge, solid aluminum wire. •It is recommended that the grounding rod you use be 8 foot copper. Note that every house has a grounding rod outside. If desired, you can install a rod into the ground outside the house. •Find an appropriate location on the outside of the house to mount OSU. •To provide Internet service, your OSU communicates with a device on your service provider’s communications tower. Your service provider must provide you with information about the nearest communications tower. For example, if the tower nearest to your home is north of your home, you will install the OSU on the north side of your house. •Mount the OSU in a high location on your home, such as un- der the eaves of your house. •Find an appropriate location on the outside of your house to mount the NIM box. 2 •Locate the components shipped with your OSU device: •OSU device •Network interface manager (NIM) box •Software CD-ROM •Power cable and power supply box •Power/Ethernet cable •Lag bolt (6) •Hex screws (2) •Washers (2) •Split lock washers (2) •Double tab washer (2) 3 Figure 1 shows the OSU. Figure 1: OSU 4 Figure 2 shows the network interface manager box. Figure 2: NIM box 5 Table 1 lists the standard contents in your OSU package. Table 1: OSU package components ComponentPart number External OSU device (vertical)123-0009-1001 External OSU device (horizontal)123-0009-2001 Mounting bracket350-0009-0010 1/4 X 2" Lag Bolt, Hex Hd, Grade 2 Galv. 594-9907-1464 1/4-20X.875 Bolt, Hex HD, SS594-9909-1428 1/4 Split Lock Washer, SS596-3003-1416 1/4 Flat Washer, SS596-3004-1420 External OSU network interface box123-0009-0055 Power cord420-0010-1010 OSU Installation Guide104-0009-0001 Ethernet cable597-6020-0050 Installation software CD-ROM110-0002-0001 6 Connecting your OSU to a computer This section describes how to connect your OSU to a computer. If you want to connect your OSU to a network device (such as a router or switch), refer to the section “Connecting the OSU to a network” on page 24, in this guide. INSTALLATION OVERVIEW The installation consists of the following major tasks, each of which is …

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FCC ID: PHX-MMDS-CPE2 Page 1 of 5 Exhibit 2 Attestation Statement Cover Letters NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 2 FCC ID: PHX-MMDS-CPE2 Attestation Statement Page 2 of 5 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 NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 2 FCC ID: PHX-MMDS-CPE2 Attestation Statement Page 3 of 5 Cover Letters Gentlemen: This report is being submitted to the Federal Communications Commission for the Certification of equipment pursuant to 2000 Title 47 CFR parts 1, 2, 21, and 74 dated 3-29-2002 Edition. 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-MMDS-CPE2 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 / 5M80W7D 74.936(a): OFDM / 5M80W7D 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 Watts Power is adjusted by system based on signal level received at the base station site. 2.1033(c)7 Maximum power rating as defined in the applicable part(s) of the rules. 21.909(g)3: 33 dBW EIRP 74.939(g)3: 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 NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 2 FCC ID: PHX-MMDS-CPE2 Attestation Statement Page 4 of 5 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 NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 2 FCC ID: PHX-MMDS-CPE2 Attestation Statement Page 5 of 5 NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Test Report Summary CFR Rule Part Requirement Test Result 2.1046 21.909(g)2 74.939(g)2 RF Output Power Pass 2.1047 21.905(b) 74.936(a) Modulation Characteristics Pass 2.1049 21.908(d) 74.936(e) Occupied Bandwidth Pass 2.1051 Spurious Emissions at Antenna Terminals Pass 2.1053 Field Strength of Spurious Radiation Pass 2.1055 Frequency Stability Pass 1.1310 Radio Frequency Radiation Exposure Limits Pass 2.1091 Radio Frequency radiation exposure evaluation: mobile devices. Pass Exhibit Summary Exhibit Section Contents 1 FCC ID Label / Location Information 2 Attestation State…

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NextNet Wireless, Inc Exhibit 13 9555 James Ave. South Suite 270 FCC ID: PHX-MMDS-CPE2 Bloomington, MN 55431 Page 1 of 5 6/13/2002 Exhibit 13 Correspondence NextNet Wireless, Inc Exhibit 13 9555 James Ave. South Suite 270 FCC ID: PHX-MMDS-CPE2 Bloomington, MN 55431 Page 2 of 5 6/13/2002 Request for Confidentiality 6/13/2002 NextNet Wireless, Inc. 9555 James Avenue South Suite 270 Bloomington, MN 55431 RE: Certification Application FCC ID: PHX-MMDS-CPE2 Please be advised that the following information is to be held confidential and behalf of NextNet Wireless, Inc.: • Exhibit 4 - Block Diagrams • Exhibit 5 – Schematics • Exhibit 10 – Parts list • Exhibit 12 - Technical Description The application contains technical information which NextNet Wireless, Inc. deems to be trade secrets and proprietary. If made public, the information might be used to the disadvantage of the applicant in the market place. Thank you for your attention to this matter. Tim Blom NextNet Wireless, Inc. NextNet Wireless, Inc Exhibit 13 9555 James Ave. South Suite 270 FCC ID: PHX-MMDS-CPE2 Bloomington, MN 55431 Page 3 of 5 6/13/2002 Modification Letter 6/13/2002 NextNet Wireless, Inc. 9555 James Avenue South Suite 270 Bloomington, MN 55431 RE: Certification Application FCC ID: PHX-MMDS-CPE2 Please be advised that the following information is a list of modifications that will be included in the production process for the above-referenced equipment. No modifications were performed during the measurement of this product for FCC compliance. Thank you for your attention to this matter. Tim Blom NextNet Wireless, Inc. NextNet Wireless, Inc Exhibit 13 9555 James Ave. South Suite 270 FCC ID: PHX-MMDS-CPE2 Bloomington, MN 55431 Page 4 of 5 6/13/2002 Warning Statements and Locations The following warning statement is located in the “Installing and using your CPE device” manual. NOTICE: This equipment has been tested and found to comply with the Radio Frequency Radiation Exposure Limits detailed below. A minimum of 20 centimeter (8 inches) separation between the CPE and the operator and all other persons should be maintained. NextNet Wireless, Inc Exhibit 13 9555 James Ave. South Suite 270 FCC ID: PHX-MMDS-CPE2 Bloomington, MN 55431 Page 5 of 5 6/13/2002 Manufacturer’s Letter 6/13/2002 NextNet Wireless, Inc. 9555 James Avenue South Suite 270 Bloomington, MN 55431 RE: Certification Application FCC ID: PHX-MMDS-CPE2 To Whom It May Concern: Please be advised that the manufacturer will ensure that the above-referenced model will be manufactured in accordance with the FCC Rules and Regulations. Thank you for your attention to this matter. Tim Blom NextNet Wireless, Inc.

FCC ID: PHX-MMDS-CPE2 Page 1 of 3 Exhibit 3 External Photographs NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 3 FCC ID: PHX-MMDS-CPE2 External Photographs Page 2 of 3 Front view NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 3 FCC ID: PHX-MMDS-CPE2 External Photographs Page 3 of 3 NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Back view

FCC ID: PHX-MMDS-CPE2 Page 1 of 3 Exhibit 1 FCC Labeling Requirements and Information NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 1 FCC ID: PHX-MMDS-CPE2 FCC Labeling Requirements and Information Page 2 of 3 6/13/2002 NextNet Wireless, Inc. 9555 James Avenue South Suite 270 Bloomington, MN 55431 RE: FCC Labeling Requirements FCC ID: PHX-MMDS-CPE2 The following label information is required by the FCC Rules and Regulations for certified devices. Thank you for your attention to these matters. Sincerely, Tim Blom NextNet Wireless, Inc. NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 1 FCC ID: PHX-MMDS-CPE2 FCC Labeling Requirements and Information Page 3 of 3 NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 ID Label / Location Information The FCC ID label will be attached to the External CPE unit with a permanent adhesive. Label samples NextNet Wireless Inc., Minneapolis, MN 55431 USA This device Complies with Part 15 of the FCC Rules. OSU-2510-V 16Vdc 2.2A FCC ID: PHX-MMDS-CPE2 Part Number: 900-0009-1000 ||||| ||||||| ||||| ||||| |||||||||| ||||| SN: 1234X123XAAX87654321 ||||||||||||| |||||||||||| |||||||||||||||||| |||||| Vertically polarized antenna external CPE label NextNet Wireless Inc., Minneapolis, MN 55431 USA This device Complies with Part 15 of the FCC Rules. OSU-2510-H 16Vdc 2.2A FCC ID: PHX-MMDS-CPE2 Part Number: 900-0009-2000 ||||| ||||||| ||||| ||||| |||||||||| ||||| SN: 1234X123XAAX87654321 ||||||||||||| |||||||||||| |||||||||||||||||| |||||| Horizontally polarized antenna external CPE label Photo showing label location on external CPE unit

FCC ID: PHX-MMDS-CPE2 Page 1 of 16 Exhibit 9 Internal Photographs NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 FCC ID: PHX-MMDS-CPE2 Internal Photographs Page 2 of 16 RF Board component side (no shields) VCO area VCO area NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 FCC ID: PHX-MMDS-CPE2 Internal Photographs Page 3 of 16 RF Board component side (with shields) in casting NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 FCC ID: PHX-MMDS-CPE2 Internal Photographs Page 4 of 16 PC Board back side NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 FCC ID: PHX-MMDS-CPE2 Internal Photographs Page 5 of 16 Casting internal view NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 FCC ID: PHX-MMDS-CPE2 Internal Photographs Page 6 of 16 Antenna Plate (antenna side) NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 FCC ID: PHX-MMDS-CPE2 Internal Photographs Page 7 of 16 Antenna Plate (back side) NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 FCC ID: PHX-MMDS-CPE2 Internal Photographs Page 8 of 16 Vertically Polarized Antenna NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 FCC ID: PHX-MMDS-CPE2 Internal Photographs Page 9 of 16 Vertically Polarized Antenna (copper side) NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 FCC ID: PHX-MMDS-CPE2 Internal Photographs Page 10 of 16 Horizontally Polarized Antenna NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 FCC ID: PHX-MMDS-CPE2 Internal Photographs Page 11 of 16 Horizontally Polarized Antenna (copper side) NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 FCC ID: PHX-MMDS-CPE2 Internal Photographs Page 12 of 16 Network Interface Module NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 FCC ID: PHX-MMDS-CPE2 Internal Photographs Page 13 of 16 Network Interface Module NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 FCC ID: PHX-MMDS-CPE2 Internal Photographs Page 14 of 16 Network Interface Module NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 FCC ID: PHX-MMDS-CPE2 Internal Photographs Page 15 of 16 Network Interface Module NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 FCC ID: PHX-MMDS-CPE2 Internal Photographs Page 16 of 16 NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Network Interface Module PCB component side Network Interface Module PCB back side

Exhibit 11 FCC ID: PHX-MMDS-CPE2 Radio Frequency Exposure Page 1 of 7 Exhibit 11 RF Exposure Information NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 11 FCC ID: PHX-MMDS-CPE2 Radio Frequency Exposure Page 2 of 7 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 NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 11 FCC ID: PHX-MMDS-CPE2 Radio Frequency Exposure Page 3 of 7 Radio Frequency Radiation Exposure Evaluation § 2.1091 Radio Frequency radiation exposure evaluation: mobile devices. (a) Requirements of this section are a consequence of Commission responsibilities under the National Environ-mental Policy Act to evaluate the environmental significance of its actions. See subpart I of part 1 of this chapter, in particular § 1.1307(b). (b) For purposes of this section, a mobile device is defined as a transmitting device designed to be used in other than fixed locations and to generally be used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitter’s radiating structure(s) and the body of the user or nearby persons. In this context, the term ‘‘fixed location’’ means that the device is physically secured at one location and is not able to be easily moved to another location. Transmitting devices designed to be used by consumers or workers that can be easily relocated, such as wireless devices associated with a personal computer, are considered to be mobile devices if they meet the 20 centimeter separation requirement. (d) The limits to be used for evaluation are specified in § 1.1310 of this chapter. All unlicensed personal communications service (PCS) devices and unlicensed NII devices shall be subject to the limits for general population/un-controlled exposure. (1) For purposes of analyzing mobile transmitting devices under the occupational/ controlled criteria specified in § 1.1310 of this chapter, time-averaging provisions of the guidelines may be used in conjunction with typical maximum duty factors to determine maximum likely exposure levels. (2) Time-averaging provisions may not be used in determining typical exposure levels for devices intended for use by consumers in general population uncontrolled environments as defined in § 1.1310 of this chapter. However, ‘‘source-based’’ time-averaging based on an inherent property or duty- cycle of a device is allowed. An example of this is the determination of exposure from a device that uses digital technology such as a time-division multiple-access (TDMA) scheme for transmission of a signal. In general, maximum average power levels must be used to determine compliance. Calculations: The information contained in 1.1307(b)(1) Table 1 indicates that an RF Exposure label be attached to the transmitting antenna for equipment operating in the MDS and ITFS bands that exceed 1640 Watts EIRP. The NextNet Wireless Expedience system operates at a maximum of 2 watts (33dBm) average power while transmitting. The Customer Premise Equipment (CPE) has a maximum transmit duty cycle of 14.29 % and is based on a TDM frame. NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 11 FCC ID: PHX-MMDS-CPE2 Radio Frequency Exposure Page 4 of 7 Radio Frequency Radiation Exposure Evaluation The vertically polarized antenna for the transmitting signal has 13 dBi of gain. Therefore the maximum radiated transmit power would be: 14.29 % Transmit duty cycle: Pmax = Ptx + G(antenna) - 10*log(duty cycle) Pmax = 33 + 13 - 10*log(.1429) Pmax = 33 + 13 – 8.45 Pmax = 37.55 dBim = 5.688 Watts EIRP < 1640 Watts EIRP The horizontally polarized antenna for the transmitting signal has 12.2 dBi of gain. Therefore the maximum transmitting power would be: 14.29 % Transmit duty cycle: Pmax = Ptx + G(antenna) - 10*log(duty cycle) Pmax = 33 + 12.2 - 10*l…

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To: Steve Dayhoff 8/12/2002 From: Tim Blom NextNet Wireless, Inc. Re: RF Exposure Dear Mr. Dayhoff, The information you have requested for the certification of FCC ID: PHX-MMDS- CPE2 is detailed on the following pages. Regards, Tim Blom Question: From: [email protected] Sent: Wednesday, August 07, 2002 3:38 PM To: [email protected] Subject: RF Exposure Issues To: Tim Blom, NextNet Wireless, Inc. From: Steve Dayhoff [email protected] FCC Application Processing Branch Re: FCC ID PHX-MMDS-CPE2 Applicant: NextNet Wireless, Inc. Correspondence Reference Number: 23613 731 Confirmation Number: EA590992 1) Please provide more details of MPE test: a) was device mounted on wall as in normal use, if not what is expected change in MPE for wall-mount configuration; b) was probe scanned and over what area around device 2) Please verify/demonstrate that MPE probe measures pulsed signals correctly Response: 1a) The Outdoor Subscriber Unit (OSU) product was attached to a wooden stand to facilitate in the measurement of the MPE. From the installation manual: Mount the OSU in a high location on your home, such as under the eaves of your house. The expected change in the MPE for a typical installation would be a measured MPE that is lower than the measured MPE at 20cm or undetectable. 1b) The measurement of the OSU for the MPE requirement was performed at the front, sides, top, bottom and back at 20cm from the case of the product. The only detectable RF energy measured was radiation from the front of the OSU product i.e. main beam of the patch array antenna. 2) NextNet Wireless uses the General Microwave Model 3 Radiation Hazard Meter (RAHAM) for verification of the MPE limits. The Model 3 RAHAM probe design employs three orthogonally oriented thin-film thermoelectric arrays. The technical information from the manufacturer specifies that this device has three 10 dB ranges of 2mW/cm 2 , 20mW/cm 2 , and 200mW/cm 2 . The average power overload is 0.5W/cm 2 , the peak power overload is 30W/cm 2 . The thermocouple sensor absorbs RF/microwave energy thereby heating the thermocouple junction as a result, thermocouple sensors give the correct average (rms) power for all types of signal formats from continuous wave (CW) to pulsed to complex digital modulation, regardless of the harmonic content, waveshape or distortion of the signal. To verify the actual measurement performance of the General Microwave Radiation Hazard Meter Model 3, a test utilizing a NextNet Wireless base station and a customer modem vertically polarized antenna was performed. The NextNet Wireless customer modem is hardware limited such that the maximum transmit duty cycle of 14.29% cannot be exceeded. Because of this, a base station which can operate at 100% transmit duty cycle in test mode will be used to transmit a 2 watt signal with the same signal modulation characteristics as used by the customer modem. The base station was calibrated to provide 2 watts at the coax input to the customer antenna. The customer antenna was inserted into an indoor modem case. At 20cm, the measured exposure was 4.3 mW/cm 2 . Applying the customer modem 14.29% maximum transmitter duty cycle to the 4.3 mW/cm 2 yields the following result: 4.3 mW/cm 2 * 0.1429 = .6145 mW/cm 2 The MPE measurement in the RF Exposure section filed with the FCC indicates a measurement reading of 0.68 mW/cm 2 . NextNet Wireless believes that the General Microwave Radiation Hazard Meter Model 3 measures the MPE of the customer modem signal properly. Verification Test Setup:

FCC ID: PHX-MMDS-CPE2 Page 1 of 32 Exhibit 6 Text Report NextNet Wireless, Inc 6/13/2002 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 6 FCC ID: PHX-MMDS-CPE2 Test Report Page 2 of 32 RF Power Output Rule Part Number: 2.1046, 21.909(g)3, 74.939(g)3 EIRP = 33 dBW+10log(X/6) dBW X = 6 for this filing EIRP maximum = 33 dBiW = 1,995 W EIRP Test Procedure: The RF output power is measured with a power meter. The RF output is applied to a 30 dB attenuator that is connected to the power sensor of the power meter. The transmitter is enabled in test mode with the attached computer. Test Conditions: Frequency = …

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