PHX-MMDS-CPE6Non-Line of Site Wireless Data Link

i Installing and using the Expedience Outdoor Subscriber Unit (OSU) Broadband Wireless Access System This document is intended for use by professional equipment installers. Subscribers of the high speed Internet service should not attempt to install the OSU. Part Number:104-0009-0001-03 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: 104-0009-0001-03 ©2002-2003 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. FOR WARRANTY INFORMATION ON THE EXPEDIENCE OSU, CONTACT THE INTERNET SERVICE PROVIDER THAT SUPPLIED THE OSU. NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE THAT ARE PROVIDED ON THE EXPEDIENCE BROADBAND WIRELESS ACCESS MODEM CD-ROM 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. iii CONTENTS Welcome ..............................................................................................1 Before you begin ..................................................................................1 Additional material required for installation .....................................................1 Pre-installation planning ......................................................................................2 Connecting the OSU to a computer ................................................... 3 Installation overview .............................................................................................3 Cabling overview ...................................................................................................4 Installing the OSU .............................................................................. 5 Selecting an installation location for the OSU ..................................................5 Installation overview .............................................................................................5 Attach the mounting bracket to the outside of the building ..........................6 Setting the OSU inside the mounting bracket ..................................................8 Partially tightening adjustment screws to hold OSU in place ........................8 Running cables through building’s wall ........................................... 10 Attaching the NIM box to the outside of building ........................... 10 Plugging cables into NIM box .......................................................... 11 Connecting ground wires .................................................................. 12 Plugging in power cord and RJ-45 cord ............................................ 13 (Optional) Finding the strongest service provider signal ................. 13 Installing the LinkMonitor program ................................................................13 Using the software-assisted method to find the strongest signal ................14 Using the sound (auditory) method to find the strongest signal .................15 Setting up the computer to receive an IP address ............................ 15 Configuring IP address assignment for routers ................................ 17 Connecting to the Internet ................................................................ 17 Refreshing the OSU’s connection ..................................................... 17 Windows users: Refreshing the connection ....................................................17 Non-Windows users: Refreshing the connection ..........................................17 Connecting the OSU to a network .................................................... 17 FCC information ................................................................................ 19 ivInstalling and using the Expedience OSU 1 Welcome This document describes how to install and use the Expedience outdoor subscriber unit (OSU) to obtain wireless high-speed Internet access. Subscribers can connect the OSU to a computer or to a small office/home office (SOHO) local area network (LAN) through a hub, switch, or router. This document is intended for use by professional equipment installers. Subscribers of the high-speed Internet service should not attempt to install the OSU. For questions about OSU operation or installation, subscribers should contact the ISP that supplied the OSU device. Before you begin This section describes items the installer or subscriber must purchase before the OSU is installed. This section also describes items you need to have available and things to consider before beginning the OSU installation. Additional material required for installation • The subscriber’s computer must be equipped with an Ethernet network interface card (NIC). The NIC is not provided with the OSU, but subscribers can purchase a NIC at most computer and electronics stores. • An RJ-45 Ethernet cable. This cable must be an outdoor rated, TIA/EIA category 5 Ethernet cable. The length of this cable depends on where you plan to install the Network Interface Manager (NIM) box on the building and where the computer (or hub) is placed inside the building. • Ground wire of sufficient length to ru…

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NextNet Wireless, Inc Exhibit 13 9555 James Ave. South Suite 270 FCC ID: PHX-MMDS-CPE6 Bloomington, MN 55431 Page 4 of 5 11/20/2003 Warning Statements and Locations The following warning statement is located in the “Installing and using the Expedience Outdoor Subscriber Unit OSU” 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 OSU and the operator and all other persons should be maintained. The following information is located on the OSU product: To comply with FCC radio frequency exposure rules, 47CFR1.1307 and 1.1310, a minimum separation of 20 cm (8 inches) is required between this device and all persons.

FCC ID: PHX-MMDS-CPE6 Page 1 of 5 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 2 Attestation Statement Cover Letters Exhibit 2 FCC ID: PHX-MMDS-CPE6 Attestation Statement Page 2 of 5 NextNet Wireless, Inc 11/20/2003 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-MMDS-CPE6 Attestation Statement Page 3 of 5 NextNet Wireless, Inc 11/20/2003 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 2000 Title 47 CFR parts 1, 2, 21, and 74 dated 6-10-2003 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-CPE6 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 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(n): 18 dBW EIRP 74.939(p): 18 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-MMDS-CPE6 Attestation Statement Page 4 of 5 NextNet Wireless, Inc 11/20/2003 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-MMDS-CPE6 Attestation Statement Page 5 of 5 NextNet Wireless, Inc 11/20/2003 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 21.909(n) 74.939(p) 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 2.1091 Radio Frequency radiation exposure evaluation: mobile devices. Pass Exhibit Summary Exhibit Section Contents 1 FCC ID Label / Location Information 2 Attestation Stat…

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NextNet Wireless, Inc Exhibit 13 9555 James Ave. South Suite 270 FCC ID: PHX-MMDS-CPE6 Bloomington, MN 55431 Page 2 of 5 11/20/2003 Request for Confidentiality 11/20/2003 NextNet Wireless, Inc. 9555 James Avenue South Suite 270 Bloomington, MN 55431 RE: Certification Application FCC ID: PHX-MMDS-CPE6 Please be advised that the following information is to be held confidential on behalf of NextNet Wireless, Inc.: • Exhibit 4 - Block Diagrams • Exhibit 5 – Schematics • Exhibit 10 – Parts list • Exhibit 12 - Technical Description This application contains technical information that NextNet Wireless, Inc. deems to be trade secrets and proprietary. If made public, the information might be used to the disadvantage of NextNet Wireless, Inc. 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-CPE6 Bloomington, MN 55431 Page 3 of 5 11/20/2003 Modification Letter 11/20/2003 NextNet Wireless, Inc. 9555 James Avenue South Suite 270 Bloomington, MN 55431 RE: Certification Application FCC ID: PHX-MMDS-CPE6 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. The printed circuit board will be updated to include all design changes in effect at the time of FCC compliance testing. The schematics and bill of materials associated with this filing reflect the updated design changes. Thank you for your attention to this matter. Tim Blom NextNet Wireless, Inc.

Reply to ATCB comments for PHX-MMDS-CPE6 Page 1 of 3 RE: FCC ID: PHX-MMDS-CPE6_ATCB000977 1. Please complete the technical contact information on the 731 form. ** Completed. New 731 form uploaded. 2. This device is an MMDS transmitter used typically for internet service connections etc. It does not appear to provide any of the services required for ITFS stations. While part 21 and part 74 use many frequencies on a shared basis, in order to fit into part 74 the device must provide the particular service of part 74. Please note that Instructional television fixed station. Is a “fixed station licensed to an educational organization and intended primarily for video, data, or voice transmissions of instructional, cultural, and other types of educational material to one or more fixed receiving locations. “ The intent of part 74I is to “...be used to transmit formal educational programming offered for credit to enrolled students of accredited schools, with limited exceptions as set forth in paragraph (e)(9) of this section and Secs. 74.990 through 74.992.” While part 74I allows OFDM modulation, the service must still apply. Please explain how, other than similar modulation characteristics, this device fits the definition and requirements of a part 74I “Instructional Television Fixed Service”. ** While NextNet Wireless, Inc. does believe that most system installations of the Expedience product will be used for an internet connection at the end user computer, that is not the only capability of the system. A license holder in the ITFS spectrum could construct a system that utilizes the NextNet Wireless, Inc. Expedience products within a proprietary closed wireless Ethernet network that may or may not make a connection to the internet. A NextNet Wireless, Inc. system will transport information from one point to another via a wireless medium. The specific content of the user data being transmitted is beyond the control of NextNet Wireless, Inc. The requirement of ensuring that an ITFS channel is utilized for “educational purposes” rests solely on the channel license holder and system operator. NextNet Wireless, Inc. is responsible for insuring that it’s products supplied to the system operator meet the applicable technical equipment requirements that are detailed within the FCC rules. 3. FYI – Please note that as this is a CPE (Customer Premise Equipment) it is an FCC part 15B device as well. As such the 2 condition statement is required to be on the product itself unless size limits this placement of the statement. ** The complete two part statement is printed in the users operating manual which is shipped with each product. 4. Please note that on page 2 and 30 of the report you state calibration is not required for the inline attenuator used in power and antenna spurious emissions measurements. The calibration chart on page 2 for power measurement also does not show the directional coupler as being calibrated. Please note that any test equipment used that has a direct affect of the measurement accuracy needs to be calibrated or the correction factors at least need to be known. When using noncalibrated equipment it is not possible to clearly and unambiguously state the measurement results. Please provide evidence that the attenuator used was calibrated. Alternately, please provide evidence that the attenuator was the value as stated and that it was appropriately included in calculating power and conducted spurious emissions. Please show the sample calculations using all appropriate inline losses or gains in the measurement system. How are they accounted for? For example, what, if any, is the loss of the directional coupler? 12/16/03 Reply to ATCB comments for PHX-MMDS-CPE6 Page 2 of 3 ** Attenuators are not routinely sent to a calibration laboratory for certification like a power meter or spectrum analyzer would be. For all measurements, the loss of the coax, attenuator, and directional coupler is verified by means of a network analyzer measurement. Once the loss of the coax, attenuator, and thru path of the directional coupler is known, this value is entered into the reference level offset of the power meter such that power measurements can be displayed without additional mathematical manipulation. 20 dB attenuator / directional coupler thru path / coax cable RF characteristics 30 dB attenuator / directional coupler thru path / coax cable RF characteristics 12/16/03 Reply to ATCB comments for PHX-MMDS-CPE6 Page 3 of 3 12/16/03 Directional coupler thru path RF characteristics For modulation mask and occupied bandwidth measurements, the attenuators are selected to ensure that the spectrum analyzer is not being over driven and generating distortion within the analyzer. The coupled path of the directional coupler is approximately 20 dB, add 26 dB for the attenuators and 1 dB for coax loss and the overall loss is about 47 dB. The specific loss of this signal path is not utilized for any calculations and is therefore not known to the degree of accuracy as is required for power measurements. Measurements performed via the coupled path of the directional coupler rely on the calibration of the spectrum analyzer to report a valid representation of the applied signal. 5. Please note that while the method RECOMMENDATION ITU-R SM.329-10 may be accepted by and incorporated in many ETSI standards, it is not a recognized FCC spurious emissions certification test procedure through TCBs for licensed devices. Radiated spurious emissions are required by the FCC to be a measurement done by antenna substitution methods. Please provide radiated spurious emissions in accordance with FCC accepted procedures for making EIRP measurements using antenna substitution test methods. ** The test report has been updated with the antenna substitution results provided by TUV product services.

FCC ID: PHX-MMDS-CPE6 Page 1 of 3 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 3 External Photographs Exhibit 3 FCC ID: PHX-MMDS-CPE6 External Photographs Page 2 of 3 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Front view Exhibit 3 FCC ID: PHX-MMDS-CPE6 External Photographs Page 3 of 3 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Back view

FCC ID: PHX-MMDS-CPE6 Page 1 of 4 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 1 FCC Labeling Requirements and Information Exhibit 1 FCC ID: PHX-MMDS-CPE6 FCC Labeling Requirements and Information Page 2 of 4 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 11/20/2003 NextNet Wireless, Inc. 9555 James Avenue South Suite 270 Bloomington, MN 55431 RE: FCC Labeling Requirements FCC ID: PHX-MMDS-CPE6 The following label information is required by the FCC Rules and Regulations for certified devices and Class B personal computers and peripherals. Thank you for your attention to these matters. Sincerely, Tim Blom NextNet Wireless, Inc. Exhibit 1 FCC ID: PHX-MMDS-CPE6 FCC Labeling Requirements and Information Page 3 of 4 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 ID Label / Location Information The FCC ID label will be attached to the Indoor CPE unit with a permanent adhesive. Label samples Vertically polarized antenna indoor CPE label Horizontally polarized antenna indoor CPE label Declaration of Conformity label To comply with FCC radio frequency exposure rules, 47CFR1.1307 and 1.1310, a minimum separation of 20 cm (8 inches) is required between this device and all persons. FCC ID: PHX-MMDS-CPE6 Part Number: 900-0055-1XXX ||||||| ||||| ||||| |||||||||| |||||| ||||||| ||||| ||||| |||||||||| |||||| SN: 1234X123XAAX87654321 ||||||| |||||||||||| |||||||||||||||||| ||||| ||||||| |||||||||||| |||||||||||||||||| ||||| NextNet ® Wireless Inc., Minneapolis, MN 55431 USA This device Complies with Part 15 of the FCC Rules. OSU-2510-AV 16Vdc 2.2A FCC ID: PHX-MMDS-CPE6 Part Number: 900-0055-2XXX ||||||| ||||| ||||| |||||||||| |||||| ||||||| ||||| ||||| |||||||||| |||||| SN: 1234X123XAAX87654321 ||||||| |||||||||||| |||||||||||||||||| ||||| ||||||| |||||||||||| |||||||||||||||||| ||||| NextNet ® Wireless Inc., Minneapolis, MN 55431 USA This device Complies with Part 15 of the FCC Rules. OSU-2510-AH 16Vdc 2.2A Exhibit 1 FCC ID: PHX-MMDS-CPE6 FCC Labeling Requirements and Information Page 4 of 4 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Photo showing label location on Outdoor CPE unit

FCC ID: PHX-MMDS-CPE6 Page 1 of 9 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 9 Internal Photographs Exhibit 9 FCC ID: PHX-MMDS-CPE6 Internal Photographs Page 2 of 9 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Main Board (component side / no shields) Main Board (component side / with shields) Exhibit 9 FCC ID: PHX-MMDS-CPE6 Internal Photographs Page 3 of 9 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Main Board (back side) Interface Board (component side) Interface Board (back side) Exhibit 9 FCC ID: PHX-MMDS-CPE6 Internal Photographs Page 4 of 9 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Antenna Plate (antenna side) Antenna Plate (back side) Exhibit 9 FCC ID: PHX-MMDS-CPE6 Internal Photographs Page 5 of 9 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Vertically Polarized Antenna Vertically Polarized Antenna (copper side) Exhibit 9 FCC ID: PHX-MMDS-CPE6 Internal Photographs Page 6 of 9 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Horizontally Polarized Antenna Horizontally Polarized Antenna (copper side) Exhibit 9 FCC ID: PHX-MMDS-CPE6 Internal Photographs Page 7 of 9 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Network Interface Module Network Interface Module Exhibit 9 FCC ID: PHX-MMDS-CPE6 Internal Photographs Page 8 of 9 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Network Interface Module Exhibit 9 FCC ID: PHX-MMDS-CPE6 Internal Photographs Page 9 of 9 NextNet Wireless, Inc 11/20/2003 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-CPE6 Radio Frequency Exposure Page 1 of 6 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Exhibit 11 RF Exposure Information Exhibit 11 FCC ID: PHX-MMDS-CPE6 Radio Frequency Exposure Page 2 of 6 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 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-MMDS-CPE6 Radio Frequency Exposure Page 3 of 6 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Radio Frequency Radiation Exposure Evaluation Calculations: The NextNet Wireless Expedience system operates at a maximum of 2 watts (33dBm) average power while transmitting. The Outdoor Customer Premise Equipment (CPE) has a maximum transmit duty cycle of 14.29 % and is based on a TDM frame. 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) = 33 + 13 – 8.45 Pmax = 37.55 dBim = 5.688 Watts EIRP < 1640 Watts EIRP The horizontally polarized antenna for the transmitting signal has 11 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 + 11 - 10*log(.1429) = 33 + 12.2 – 8.45 Pmax = 35.55 dBim = 3.5892 Watts EIRP < 1640 Watts EIRP Exhibit 11 FCC ID: PHX-MMDS-CPE6 Radio Frequency Exposure Page 4 of 6 NextNet Wireless, Inc 11/20/2003 9555 James Ave. South Suite 270 Bloomington, MN 55431 Radio Frequency Radiation Exposure Evaluation 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. 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 maximum power level from the previous calculations will be used. S = EIRP/4πR 2 or R = (EIRP/4πS)^0.5 EIRP = 5.688 W EIRP = 5688 mW EIRP S = 1 mW/cm 2 R = (5688/(4*π*1))^0.5 R = 21.27 cm Calculated safe distance from transmitting antenna is 21.27 cm for a point source radiation element. The NextNet Wireless Expedience CPE uses a 4 element patch array, the power supplied to each patch is one quarter the total power that would be supplied to a single radiating antenna as described in Bulletin 65. Because this transmitted power is distributed over a larger area, the actual signal at 20 cm will be less than the calculated value. A measurement of the signal strength at 20 cm is detailed below. Exhibit 11 FCC ID: PHX-MMDS-CP…

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