NNSTX2000-HG-99High Gain Node Transmitter

Exhibit 8 FCC ID: NNSTX2000-HG-99 10/27/99 Page 1 of 8 Exhibit 8 – Users Manual SpectraPoint Wireless LLC SP2000 Series Node Transmitter FCC ID: NNSTX2000-HG-99 Model Number: TX2000-28-HG-510 Information Provided in this Exhibit: Operating Instructions for the SpectraPoint High Gain Transmitter (Stand-Alone Configuration) The SpectraPoint Wireless High Gain Transmitter, under operational conditions is under control of the SpectraPoint Element Controller and Network Management software which automatically determines the operating frequencies and power levels and monitors the performance of the system. The User Manuals delivered with the SpectraPoint System describes the installation of the entire system but does not include stand-alone operation of the individual components of the system. Therefore, this document describes the equipment setup and operation employed for stand-alone operation of the High Gain Transmitter, as applicable to compliance testing. For stand-alone testing such as functional checkout or compliance testing, this user’s manual provides the instructions so that the High Gain Transmitter may be operated at maximum rated output power with automatic power control disabled. In addition, the High Gain Transmitter may be commanded to various operating frequencies within the allocated band of operation and modulated with actual or simulated IF input signals. Exhibit 8 FCC ID: NNSTX2000-HG-99 10/27/99 Page 2 of 8 Instructions for Stand-Alone Operation of the SpectraPont High Gain Transmitter 1.0 Scope This document provides the instructions for operation of a single SpectraPoint High Gain Transmitter for test purposes (i.e., without the control of the SpectraPoint System). 2.0Introduction The SpectraPoint High Gain Transmitters, when operating under control of the SpectraPoint System, receive an RF reference tone and QPSK modulated L-Band intermediate frequency (IF) signals (telephony, digitized video or digital data) from the Base equipment located in the LMDS hub. The Transmitter upconverts this QPSK modulated signal to Ka-Band and transmits it “downstream” to the Customer Premises Equipment (subscriber) Roof Unit and Network Interface Unit (NIU). For test purposes, the QPSK modulated input signal to the Roof Unit transmitter, at the appropriate center frequency, modulation, bandwidth and level is provided by test hardware and software which is defined in this document. 3.0Interconnection of Support Equipment The interconnection of the High Gain Transmitter with the test support equipment is shown in figure 8-1. The support hardware and software is shown in Table 8-1. Using this support test equipment, the High Gain Transmitter will produce single or multiple QPSK phase modulated Ka-Band output at user-selected bandwidths (as in the SpectraPoint System). 4.0 Description of the Test and Support Equipment The support equipment required to operate the High Gain Transmitter in a stand-alone mode is shown in Figure 8-1 and consists of: • DC power source for the High Gain Transmitter • 960 MHz reference signal • source of the QPSK digitally-modulated signal (Rohde & Schwarz AMIQ Arbitrary Waveform Generator and SMIQ Vector Signal Generator) • Personal Computer with WinSim software to generate the QPSK I and Q Signals at the AMIQ and NA1 software to provide RS-485 control to the High Gain Transmitter. Exhibit 8 FCC ID: NNSTX2000-HG-99 10/27/99 Page 3 of 8 Personal Computer (WinSim Software) (NA1 Software) (IEEE-488 Interface) (Dual RS-485 Interface) DC Power Supply (-48 Volts) High Gain Transmitter -48 Vdc Power & RS-485 Command Bus GPIB 40 GHz Spectrum Analyzer 120 VAC 60 Hz Power Input Figure 8-1 High Gain Transmitter Test and Support Equipment AMIQ Arbitrary Waveform Generator Freq. Synthesizer (960 MHz -7 dBm) I Q L-Band IF Signal (Single or Multicarrier QPSK) Reference Signal 40 GHz Power Meter SMIQ Vector Signal Generator SMIQ Vector Signal Generator SMIQ Vector Signal Generator 3-Way Signal Combiner Exhibit 8 FCC ID: NNSTX2000-HG-99 10/27/99 Page 4 of 8 4.1 Generation of QPSK Test Signals Test signals for the High Gain Transmitter, simulating I/F input from the SpectraPoint Base Equipment, are generated in the AMIQ and transferred by operator command to the SMIQ. The WinSim software program is launched by double-clicking on the WinSim icon or by selection from the Windows Program Start menu. The modulation parameters may be manually entered through the PC keyboard or recalled from predefined parameters stored on disk. The NIU is capable of generating QPSK-modulated signals ranging from approximately1.5 MHz bandwidth to 14.5 MHz bandwidth depending on a variety of operating rates and error correction schemes required for reliable operation of an SpectraPoint LMDS installation. The CPE Roof Unit test and support equipment has the capability to simulate these complex signals and provide the DC power and enable command to operate the unit for test and analysis. 4.1.1Test Signals The standard signal is stored in a data file on disk representing the widest bandwidth signal that will be produced by the SpectraPoint Base Channel Group in operation. Refer to Table 8-1 for the parameters. Table 8.1 Parameters for Rohde & Schwarz AMIQ Modulation Setup AMIQ Window ParameterSetting Data SourcePRBSPRBS 9 ModulationCodingNone ModulationTypeQPSK ModulationSequence Length10,000 ModulationFilter FunctionRoot Cosine ModulationWindow FunctionRect ModulationSymbol Rate27.9 MSps ModulationOversampling3 MainSampling Rate83.700MHz MainSamples30,000 Exhibit 8 FCC ID: NNSTX2000-HG-99 10/27/99 Page 5 of 8 4.1.2Single and Multiple Carrier Signals One, two or three wideband QPSK channels may be applied to a High Gain Transmitter in normal operation. The test support equipment setup shown in Figure 8-1 shows three SMIQ vector signal generators driven be one AMIQ arbitrary waveform generator. For single-channel operation, only one SMIQ vector signal generator is required. For two-channel or three –channe…

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Exhibit 2 FCC ID: NNSTX2000-HG-99 10/27/99 Page 1 of 1 Exhibit 2 – Attestation Statement SpectraPoint Wireless LLC SP2000 Series Node Transmitter FCC ID: NNSTX2000-HG-99 Model Number: TX2000-28-HG-510 1.0Certification of Data The technical data supplied with this application, having been taken under my supervision, is hereby duly certified. This is a statement of my qualifications: BSEE 1974, University of Michigan, Ann Arbor, Michigan 25 years experience in EMC Engineering design and test Name:James Dykema Date:27 October 1999 Position:Sr. Staff Engineer I hereby certify that the above application was prepared under my direction and that to the best of my knowledge and belief, the facts set forth in the application and accompanying technical data are true and correct. Name:J. Michael Grizzaffi Date:27 October 1999 Position:Agency Test Manager SpectraPoint Wireless LLC

Exhibit 11 FCC ID: NNSTX2000-HG-99 10/27/99 Page 1 of 3 Exhibit 11 – RF Exposure SpectraPoint Wireless LLC SP2000 Series Node Transmitter FCC ID: NNSTX2000-HG-99 Model Number: TX2000-28-HG-510 Information Provided in this Exhibit: This exhibit presents a discussion of the SpectraPoint High Gain Transmitter relative to the RF Exposure requirements for transmitters approved for use in the Local Multipoint Distribution Service as defined in FCC Parts 1, 2 and 101 and Office of Engineering Technology Bulletin 65. Exhibit 11 FCC ID: NNSTX2000-HG-99 10/27/99 Page 2 of 3 RF Exposure Information 1.0RF Exposure Requirements for LMDS Transmitters Some transmitters approved for operation for Local Multipoint Distribution Service (LMDS) under FCC Part 101 are subject to an Environmental Evaluation as defined in Part 1, Paragraph 1.1307, and are required to display warning labels. FCC Part 2 also provides requirements for some transmitters with specific usage. This exhibit provides information relating to the specific requirements for the SpectraPoint High Gain Node transmitter for compliance with the RF Exposure requirements of FCC Parts 1, 2 and 101, and FCC Office of Engineering and Technology (OET) Bulletin 65. 2.0Environmental Assessment FCC Part 1, Paragraph 1.1307 and OET Bulletin 65, Appendix A, Table 1, state that “Routine Environmental Evaluation” must be performed for LMDS transmitters if: a) for non-building-mounted antennas, the height above ground level to the lowest point of the antenna is less than 10 meters AND the power is greater than 1640 Watts EIRP b) for building-mounted antennas, the power is greater than 1640 Watts EIRP. The SpectraPoint High Gain Node transmitter at maximum rated operating power has an EIRP of 158.5 Watts, considerably less than that required for an Environment Assessment. The factors contributing to calculation of EIRP for the SpectraPoint High Gain Node transmitter are discussed in paragraph 2.2, below. 2.1 Radio Frequency Radiation Exposure Evaluation Assessment FCC Part 2, Paragraph 2.1091 defines the requirements for a radio frequency radiation exposure evaluation for mobile devices and 2.1093 defines the same for portable devices. The SpectraPoint High Gain Node transmitter is neither mobile nor portable and is therefore considered exempt from these requirements. 2.2Effective Isotropic Radiated Power (EIRP) and Power Density Calculations The maximum EIRP from the SpectraPoint High Gain LMDS transmitter is 158.5 Watts, based on a maximum power output of 1.0 Watt and an antenna gain 22 dBi. The maximum on-axis power density of High Gain transmitter is 0.82 mW/cm 2 based on calculations using equations contained in OET Bulletin 65. Exhibit 11 FCC ID: NNSTX2000-HG-99 10/27/99 Page 3 of 3 3.0 Labeling Requirements: Part 1, Paragraph 1.1307, Table 1 specifies that LMDS subscriber transceivers are required to have a label which provides adequate notice regarding potential radio frequency hazards relative to the limits of Part 1, Paragraph 1.1310. There are no similar requirements for non-subscriber transmitters. The SpectraPoint High Gain LMDS transmitter is not a “subscriber” transceiver. It normally will be installed with other transmitters in commercial locations such as buildings or towers rather than at subscriber locations. Consequently, there are no RF exposure labeling requirements for the SpectraPoint High Gain LMDS transmitter.

Exhibit 4 FCC ID: NNSTX2000-HG-99 10/27/99 Page 1 of 2 Exhibit 4 – Block Diagram SpectraPoint Wireless LLC SP2000 Series Node Transmitter FCC ID: NNSTX2000-HG-99 Model Number: TX2000-28-HG-510 Information Provided in this Exhibit: Figure 4-1 Node Transmitter Block Diagram Exhibit 4 FCC ID: NNSTX2000-HG-99 10/27/99 Page 2 of 2 Figure 4-1 Node Transmitter Block Diagram Bias Control RS-485 Local Oscillator -48 VDC IF RS-485 Bus Interface LO Interface IF Atten Control Temp Sense Power On/Off DC Power Monitor Controller DC/DC Converter Digital Assembly J1 J2 J3 Ref RF IF BIT RF BIT Temp Comp HPA/Upconverter Module J4 960 MHz +/- 100 Hz 950 to 1950 MHz 25880 to 27030 MHz (10 MHz Incr.) 27500 to 27860 MHz 0 to 40 dB

Exhibit 13 FCC ID: NNSTX2000-HG-99 Page 1 of 1 October 27, 1999 Federal Communications Commission Equipment Approval Services P.O. Box 358315 Pittsburgh, PA 15251-5315 Enclosed is an Application for Equipment Authorization and supporting exhibits for a SpectraPoint Wireless LLC, Solid-State Microwave Transmitter, FCC ID: NNSTX2000-HG-99, intended for use in the Local Multipoint Distribution Service (LMDS), under 47 CFR, Part 101. The transceiver contains a 1 Watt transmitter operating as an LMDS base station in the 27.5-to- 28.35 GHz LMDS band. Sincerely, James W. McCoy Vice President and Chief Technical Officer SpectraPoint Wireless LLC Exhibit 13 -- Cover Letter SpectraPoint Wireless LLC SP2000 Series Node Transmitter FCC ID: NNSTX2000-HG-99 Model Number: TX2000-28-HG-510

February 29, 2000 Federal Communications Commission Applications Processing Branch Columbia MD Atten: Mr. Andy Leimer Re: Correspondence Reference Number 12245, 18 February 2000 FCC ID NNSTX2000-HG-99 731 Confirmation Number EA95814 This letter is in response to your Request for Information Number 12245, dated February 18, 2000. 1) It was unclear how the conducted power of 1 watt, as listed in the application, was derived. Is it a measured value? Please explain how you arrived at this figure and how the limit of 30 dBW/MHz was derived. A sample calculation will help clarify the issue. The conducted power level of 1 watt is a measured value at the “coupled” output of a directional coupler (see Figure A-7, page 13 of the test report and attached sketch, page 4 of this letter). The loss at the coupled port for this directional coupler is nominally 10 dB; the IF input to the transmitter was adjusted for an output indication on the power meter of +20 dBm, i.e., +30 dBm at the transmitter output. The Power Spectral Density was measured with an HP 8564E spectrum analyzer using the “noise marker” function. Table A-1 indicates the correction factors applied to the measured data (Figures A-1 through A-6) to arrive at the EIRP power density; these include directional coupler “through” port loss, WR28-to-“K” connector loss, cable loss and dBm/Hz‡dBW/MHz correction. For example, for the test frequency of 27.520 GHz, the Power Spectral Density as measured on the HP8564E spectrum analyzer is –59.17 dBm/Hz. Conversion from dBm/Hz to dBW/MHz is 30 dB (60 dB for Hz‡ MHz and -30 dB for dBm ‡ dBW). The loss of the directional coupler, 10 dB pad and cable connecting the transmitter to the spectrum analyzer was 13.8 dB resulting in a power level at the antenna input of -15.37 dBW/MHz. (Note that the occupied bandwidth is 32.5 MHz and the calculated power for this unit is -15.37 dBW/MHz + 10 Log 10 (32.5) = -0.25 dBW = +29.75 dBm, fairly close agreement with the measured power level of +30 dBm). With an antenna gain of 22 dBi, the EIRP of the transmitter is 6.6 dBW/MHz. We did not derive the limit of 30 dBW/MHz – that is the maximum allowable EIRP specified in the table of Part 101 paragraph 101.113 (a) for LMDS transmitters operating in the 27500 to 28350 MHz band. 2) The frequency range in the application is 27.5 GHz to 27.86 GHz. 27.5 GHz is the band edge and cannot be listed in the Grant. I need the center frequency of the carrier for the lowest and highest frequency of the EUT. You have a similar application for a subscriber unit that lists 27.8 GHz to 28.35 GHz. Please verify the frequency range for this unit. We apologize if any information in the application was misleading. This transmitter operates in the low end of the LMDS authorized spectrum (i.e., 27.500 to 27.860 GHz) whereas our other transmitter (a subscriber transceiver, CPE Roof Unit, FCC ID NNSRTU2000-99, EA95653), operates in the high end of the band (27.890 to 28.350 GHz). For this transmitter, the center frequency of the carrier at the lowest tuned QPSK signal will be 27.520 GHz. The center frequency of the carrier at the highest tuned QPSK signal will be 27.840 GHz. The QPSK signals are just under 40 MHz wide each. One transmitter may have one, two or three adjacent 40 MHz wide QPSK signals. Figures A-1 through A-3 of the test report show a single QPSK signal at low, mid and high tuned frequencies, Figure A-4 shows two adjacent QPSK signals at the low end of the band, and Figure A-5 shows three adjacent QPSK signals also at the low end of the band. Additionally, this transmitter will be used for CW transmission of a Pilot Tone at 27.510 GHz (refer to page 46 of the test report, Exhibit 6). Figure C-1b of the test report shows the lowest tuned single-carrier QPSK signal at 27.520 GHz with the emission mask at band edge. Figure C-1a shows the same signal but with a scan that covers the - to + 250% portion of the band where the emission limit is 56 dB below the carrier mean power output level. Similar scans are included in Appendix C for the multiple-carrier operation. The wide span (5 GHz) scans were done with a Resolution Bandwidth of 1 MHz. The narrower span scans showing compliance at the band edge were done with an RBW of 300 kHz to better define the edges of the QPSK signal. The mask was adjusted accordingly (5.23 dB) to compensate for the resolution bandwidth difference between the measurement and the spec. 3) The occupied BW measurements were made with a Resolution BW of 300 KHz. The Resolution BW should be 1 MHz. I tried to adjust for this difference by adding 6 dB to the spectrum plot. I was unable to confirm compliance with the emissions mask using this method. Please provide new spectrum plots with the Occupied BW set to 1 MHz. Comparative Occupied Bandwidth measurements at 1 MHz RBW are attached per your request on pages 5 of this letter. These were produced by Motorola, Scottsdale AZ, the lab that performed the original certification tests on this transmitter and prepared the test report submitted as Exhibit 6 to this application. We were not aware that a 1 MHz Resolution Bandwidth was required for measurement of Occupied Bandwidth. The RBW of 300 kHz was used to better define the edge of the QPSK modulation for both Occupied Bandwidth and Emission Limitation measurements. As you can see in the attached data on page 5, there is no significant difference between Occupied Bandwidth measured at RBWs of 300 kHz and 1 MHz RBW. You will note also, by comparing these scans with those in the test report, that a 1 MHz RBW does “broaden” the QPSK spectrum slightly, which we believe to be a “penalty” for Emission Limitation measurements. The emission limit at the band edge is 40.3 dB below the mean output power level of the transmitter. The transmitter mean power output level is +30 dBm. The Resolution Bandwidth Correction factor is 10 Log 10 (.3 MHz/1 MHz), i.e., 5.23 dB. Therefore, the emission limit at band edge is –15.53 dBm (-45.53 …

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March 8, 2000 Federal Communications Commission Applications Processing Branch Columbia MD Atten: Mr. Andy Leimer Re: Correspondence Reference Number 12486, 18 February 2000 FCC ID NNSTX2000-HG-99 731 Confirmation Number EA95814 This letter is in response to your Request for Information Number 12486, dated March 6, 2000. The pilot tone is listed at 27510 MHz. Since this is closer to the band edge than the QPSK signal, a spectrum plot showing compliance to the emissions mask measured with 1 MHz RBW will be required. Please submit the spectrum plot. All other issues have been resolved with your previous response to the first request for technical information. The requested spectrum plots are shown in Figures 2 and 3 on page 4 of this letter. The data was taken with the High Gain Transmitter operating at the maximum rated power output of 1.0 Watt (+30.0 dBm). The test arrangement for collection of data was the same as used for antenna terminal conducted measurements during the original certification testing for RF Power, Occupied Bandwidth and Emission Limitations and is shown in Figure 1, page 3 of this letter. The CW input to the transmitter was generated by one SMIQ – the AMIQ and other two SMIQs shown in Figure 1 were not required for this test. Tests were performed by Motorola, Scottsdale AZ, the lab that performed the original certification tests on this transmitter and prepared the test report submitted as Exhibit 6 to this application. Figure 2 was at 5 MHz/division to indicate compliance at the lower LMDS band edge. Figure 3 was at 500 MHz/division to indicate compliance over the +/- 250% region around the center of the LMDS band, to indicate compliance in the -56 dBc region of the emission limit specification. We hope that we have satisfactorily answered your question and provided the data that you require to complete your review of our application. Please advise if you require further data or explanation regarding the testing or test results. Sincerely, E. W. Paschetag EMI/EMC Engineering Spectrapoint Wireless LLC AMIQ 3-Way Combiner SMIQ SMIQ SMIQ HG Transmitter 960 MHz Frequency Source Power Meter Spectrum Analyzer 10 dB Directional Coupler 10 dB Attenuator Figure 1 -- Test Setup for Antenna Conducted Testing on the SpectraPoint High Gain Transmitter (RF Power Measurement, Occupied Bandwidth & Emission Limitations) Figure 2 -- Spectrum Analyzer Scan of the Pilot Tone, 27510 MHz, 1.0 Watt RF Output, 5 MHz/div Figure 3 -- Spectrum Analyzer Scan of the Pilot Tone, 27510 MHz, 1.0 Watt RF Output, 500 MHz/div

Exhibit 3 FCC ID: NNSTX2000-HG-99 Page 1 of 4 10/27/99 Exhibit 3 – External Photos SpectraPoint Wireless LLC SP2000 Series Node Transmitter FCC ID: NNSTX2000-HG-99 Model Number: TX2000-28-HG-510 Information Provided in this Exhibit EXTERNAL PHOTOS SpectraPoint Wireless Node Transmitter external view photos. The following list of photos is provided in this exhibit: Figure 3-1 Node Transmitter Side View, page 2 Figure 3-2 Node Transmitter Side View with Antenna removed, page 3 Figure 3-3 Node Transmitter Rear View, page 4 Exhibit 3 FCC ID: NNSTX2000-HG-99 Page 2 of 4 10/27/99 Figure 3-1 Node Transmitter Side View Exhibit 3 FCC ID: NNSTX2000-HG-99 Page 3 of 4 10/27/99 Figure 3-2 Node Transmitter Side View with Antenna removed Exhibit 3 FCC ID: NNSTX2000-HG-99 Page 4 of 4 10/27/99 Figure 3-3 Node Transmitter Rear View

Exhibit 1 FCC ID: NNSTX2000-HG-99 Exhibit 1 – ID Label/Location Information SpectraPoint Wireless LLC SP2000 Series Node Transmitter FCC ID: NNSTX2000-HG-99 Model Number: TX2000-28-HG-510 Information Provided in this Exhibit: a)Label Drawings SpectraPoint Wireless drawing 3215477-000 is the artwork for the Node Transmitter ID labels. Sheet 1 of this drawing (shown on page 2 of this exhibit) contains notes pertaining to the labels; sheet 2 (shown on page 3 of this exhibit) contains the artwork for the label. b)Node Transmitter Assembly Drawings SpectraPoint Wireless drawing 3215417 sheet 1, shown on page 4 of this exhibit, is a drawing for the Node Transmitter. The location of the label is shown on this drawing. 10/27/99 Page 1 of 4 10/ 27 /99 Page 2 of 4 10/ 27 /99 Page 3 of 4 Exhibit 1 FCC ID: NNSTX2000-HG-99 FCC ID Label 10/27/99 Page 4 of 4

Exhibit 9 FCC ID: NNSTX2000-HG-99 10/27/99 Page 1 of 9 Exhibit 9 – Internal Photos SpectraPoint Wireless LLC SP2000 Series Node Transmitter FCC ID: NNSTX2000-HG-99 Model Number: TX2000-28-HG-510 Information Provided in this Exhibit: Figure 9-1 Node Transmitter side view cover removed, page 2 Figure 9-2 Node Transmitter front view with antenna removed, page 3 Figure 9-3 Node Transmitter Local Oscillator, page 4 Figure 9-4 Node Transmitter Digital Board – Top side, page 5 Figure 9-5 Node Transmitter Digital Board – Backside, page 6 Figure 9-6 Node Transmitter Waveguide Filter, page 7 Figure 9-7 Node Transmitter High Power Amplifier, page 8 Figure 9-8 Node Transmitter Antenna assembly, page 9 Exhibit 9 FCC ID: NNSTX2000-HG-99 10/27/99 Page 2 of 9 Figure 9-1 Node Transmitter side view cover removed Exhibit 9 FCC ID: NNSTX2000-HG-99 10/27/99 Page 3 of 9 Figure 9-2 Node Transmitter front view with antenna removed Exhibit 9 FCC ID: NNSTX2000-HG-99 10/27/99 Page 4 of 9 Figure 9-3 Node Transmitter Local Oscillator Exhibit 9 FCC ID: NNSTX2000-HG-99 10/27/99 Page 5 of 9 Figure 9-4 Node Transmitter Digital Board – Top side Exhibit 9 FCC ID: NNSTX2000-HG-99 10/27/99 Page 6 of 9 Figure 9-5 Node Transmitter Digital Board - Backside Exhibit 9 FCC ID: NNSTX2000-HG-99 10/27/99 Page 7 of 9 Figure 9-6 Node Transmitter Waveguide Filter Exhibit 9 FCC ID: NNSTX2000-HG-99 10/27/99 Page 8 of 9 Figure 9-7 Node Transmitter High Power Amplifier Exhibit 9 FCC ID: NNSTX2000-HG-99 10/27/99 Page 9 of 9 Figure 9-8 Node Transmitter Antenna assembly

Exhibit 12 FCC ID: NNSTX2000-HG-99 10/27/99 Page 1 of 3 Exhibit 12 – Operational Description SpectraPoint Wireless LLC SP2000 Series Node Transmitter FCC ID: NNSTX2000-HG-99 Model Number: TX2000-28-HG-510 Information Provided in this Exhibit: Operational description of the Node Transmitter Exhibit 12 FCC ID: NNSTX2000-HG-99 10/27/99 Page 2 of 3 Operational Description of High Gain Transmitter Unit The node transmitter provides the RF link from the central office for the LMDS system. The SpectraPoint ® LMDS system is designed to transport a variety of broadband wireless services to customers. This LMDS system is capable of delivering up to 240 MHz of contiguous bandwidth of data services to customers in an area of up to 5 Km radius from a central base station. The same frequency spectrum may be reused in similar sectors throughout a given metropolitan area. The two basic parts that make up the SpectraPoint ® LMDS system are the Base Station and Subscriber Terminal equipment. The block diagram in Figure 1 shows the relationship of the High Gain node RF Transmitter Unit to the total system. In the diagram, the downstream direction is defined from the RF Transmitter to the Roof Top Unit. The reverse signal direction is defined as upstream. In operation, the DS3 data interface to the Channel Group is Quadrature Phase Shift Key (QPSK) modulated onto an L-Band intermediate frequency carrier. The I/F is input to the RF Transmitter where it is upconverted to the 27.5-28.35 GHz authorized LMDS frequency band. The RF is transmitted downstream through one of 4 orthogonal sectors. Each sector reuses the same frequency spectrum analogous to a cellular phone system that has no moving components. The RF Transmitter is authorized to transmit from one to three 40 MHz data channels as well as a CW pilot tone of 28510 MHz. In the upstream direction, the customer interface to the Network Interface Unit (NIU) may be a combination of multiple T1 data lines, 10BaseT local area network data, or digital video data. The NIU combines the data into a single data stream and modulates an L-Band IF carrier. This IF carrier is then input to the transmit side of the CPE Roof Unit Transceiver. The CPE Roof Unit upconverts the L-Band signal to the 27.5-28.35 GHz authorized LMDS frequency band for transmission to the Sector RF Receiver. The RF Receiver then down converts the RF to the L-band frequency in a reverse of the Base ATM Switch Channel Group RF Transmitter Roof Top Unit Channel Group RF Transmitter Network Interface Customer Access Device Channel Group RF Receiver Subscriber Terminal DS3c Base Station Figure 1: LMDS Block Diagram Down Stream > > > < < < Up Stream Exhibit 12 FCC ID: NNSTX2000-HG-99 10/27/99 Page 3 of 3 Station downstream process. Finally data is reassembled into a DS3 format for interfacing with the Central Office equipment. The node transmitter consists of a Local Oscillator Module, High Power Amplifier Module (HPA)/Up converter Module, a waveguide filter, antenna, polarizer, and radome mounted configured in and around an aluminum chassis. The chassis also contains a Digital Assembly which supplies control functions, Power conversion/distribution and a communications interface to the Base Station. The input power to the node transmitter is –48 VDC. Power supply modules on the Digital Assembly convert the input DC voltage into +/- 15, +5, and +8 VDC. These supply voltages are distributed to the various electronic modules through cables internal to the chassis. Control functions to the node transmitter is supplied through an RS-485 serial control port. The functions include local oscillator frequency, IF attenuation, and transmitter power level. The node transmitter supplies status on IF Built In Test (BIT) detection, RF signal level detection, LO frequency lock, and level detection through the same serial interface. The node transmitter IF ranges from 950 MHz to 1950 MHz. The IF is upconverted by the node transmitter to the transmission frequency range of 27.35 to 27.86 GHz. Within this IF range, combinations of modulated and CW signals may be contained. The transmitter may operate with one to three QPSK carriers, with each carrier of up to 40 MHz BW. Also, the transmitter is capable of transmitting a 27.510 GHz pilot tone either singularly or in combination with the modulated carriers. The pilot tone is upconverted from the 960 MHz reference. Power output of the node transmitter is controlled using automatic level control (ALC) through a power range of +13 dBm to +30 dBm. Power from the HPA is coupled to the antenna through a waveguide band pass filter. The antenna is polarized either horizontally or vertically depending on the application environment. Antenna gain ranges between 17 and 22 dBi at the 0 degree elevation plane and through the +/- 45 degree azimuth. The range of the antenna elevation pattern is – 2.5 to + 30 degrees. Built in test (BIT) sensors monitor IF power, RF power, LO level, and LO lock status. These monitored values are periodically transmitted to the base station as status. If the base station processor finds any component out of tolerance, it can command the power amplifier to the off state. The transmitter will then be disabled.

Exhibit 10 FCC ID: NNSTX2000-HG-99 Page 1 of 610/27/99 Exhibit 10 – Parts List/Tune up Procedure SpectraPoint Wireless LLC SP2000 Series Node Transmitter FCC ID: NNSTX2000-HG-99 Model Number: TX2000-28-HG-510 Information Provided in this Exhibit: a) High Gain Node Transmitter Assembly drawing and parts list – Page 2 b) Product Information Primer – Pages 3-6. There are no tune up procedures for the hardware device itself. During installation, the hardware is positioned for best signal transmission and reception as well as proper polarization. The Product Information Primer supplies information for this installation and adjustment operation. Exhibit 10 FCC ID: NNSTX2000-HG-99 10/27/99 Part No: PIP2200-TX DR A FT ™ SpectraPoint 2000 Series Transmitters Model No. Product Information Primer Transmitters broadcast signals from the Base Channel Group in the 28 GHz band to multiple Customer Premise Equipment (CPE). There are two type of transmitters (Basic and High Gain) and two polarities (horizontal and vertical). The available Transmitter models are listed in Ta ble 1. Install Transmitters Attention All the TXs in a Sector must be of the same polarity (either…

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