JXB24X4P-08TPoint to Point Radio for DEMS Operation

EXHIBIT # 3 FCC Requirements CFR 47 Part 2.1033,c (3) Installation and Operating Instructions 4X8 T1

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Question # 1 It is not clear to me the mea ning o f the q ues tion. If yo u co uld redefi ne yo ur co ncern w e w ould be able to respond.

CERTIFICATION OF TECHNICAL COMPLIANCE JXB24X4P-08T Part 101: Fixed Microwave Service INTENDED USE OF THE DEVICE Digital Microwave Corporation’s intended use of the (JXB24X4P-08T) Series Radio is to provide state-of-the-art point-to-point 24 GHz Digital Electronic Messaging Service. When used in DEMS applications, individual, independent transceivers are used at the hub site with directional antennas to each remote site. The remote specifications apply to both ends of the radio. This equipment has been tested in accordance with the requirements contained in the appropriate Commission regulations. To the best of my knowledge, these tests were performed using measurement procedures consistent with industry or Commission standards and demonstrate that the equipment complies with the appropriate standards. Each unit manufactured, imported or marketed, as defined in the Commission’s regulation will conform to the samples(s) tested within the variations that can be expected due to quantity production and testing on a statistical basis. I further certify that the necessary measurements were made by Digital Microwave Corporation, 3325 South 116 th Street, Suite 161, Seattle, WA 98168. Very truly yours, Patric McDonald Chief Technical Officer

EXHIBIT # 4,5&6 FCC Requirements CFR 47 Part 2.1033,c (4)&(5)&(6) Operating Parameters JXB24X4P-08T Type of Emission, Necessary Bandwidth and Modulation Characteristics for 4XT1 and the 8XT1 Radio: The DMC XP4 T-Carrier radio is employed to process digital information of various types. Voice, data, television, and many other information types can be encoded and transmitted across this radio system. The emission designators, 5M00F7W, and 10M0F7W were developed by the following process: The necessary bandwidth was developed from the following equation: CFR 47 part 2.202, (b) For 4XT1 Data rate (including overhead): Bn = 2 DK + B B= R/log(base2) of S B= (7.249Mbits/sec.)/2 = 3.6245M Symbols/sec. Where: Bn = Necessary bandwidth in MHz R= Aggregate bit rate in bits/sec = 7.249 Mbits/sec. S= number of transmitter levels = 4 D= deviation in MHz = .687 MHz K= 1 for this modulation type Therefore Bn = (2) (.687E+6) (1) + 3.624E+6 = 5.00 MHz The F7W portion of the designator is derived as follows F = Frequency Modulation [CFR47 part 2.201 (c)] 7 = is the nature of the modulation signal [CFR47 part2.201 (d)] W = is the type of information transmitted [CFR47 part2.201 (e)] The resultant complete emission designator for the 4XT1 can be stated as 5M0OF7W For 8XT Data rate (including overhead): Bn = 2 DK + B B= R/log(base2) of S B= (14.48Mbits/sec.)/2 = 7.249M Symbols/sec. Where: Bn = Necessary bandwidth in MHz R= Aggregate bit rate in bits/sec = 14.48 Mbits/sec. S= number of transmitter levels = 4 D= deviation in MHz = 1.375 MHz K= 1 for this modulation type Therefore Bn = (2) (1.375+6) (1) + 7.249E+6 = 10.00 MHz The F7W portion of the designator is derived as follows F = Frequency Modulation [CFR47 part 2.201 (c)] 7 = is the nature of the modulation signal [CFR47 part2.201 (d)] W = is the type of information transmitted [CFR47 part2.201 (e)] The resultant complete emission designator for the 8XT1 can be stated as 10MOF7W Frequency Range: For 5M007FW----- 24,259 to 25,242 MHz For 10M0F7W----- 24,264 to 25,236 MHz Range of operating power: 30 db Refer to Exhibit 4,5,6 and Exhibit 9 technical description of power control and operation.

EXHIBIT # 7&8 FCC Requirements CFR 47 Part 2.1033,c(7)&(8) Power Rating and DC Power Input JXB24X4P-08T SAL 11-8-99 TITLE: MAN.: EN G. : TRANSCEIVER, 24GHz, HIGH AND LOW QA : SIZEDWG NO. PURCH.: A 396-024001-001 & 396-024002-001 ISSUED: SCALE 1:1 CAD FI LE: 39624001.SCD DO NOT SCALE DRAWING • X SPECIFICATION CONTROL DRAWING // SOURCE CONTROL DRAWING 000-000079-FRM Rev. A MANUFACTURER CATALOG # or DATE MANUFACTURERS PART NUMBER DASH NUMBERS Se ctionPara me te rSpe cificatio n Limits 1.0Rx Input / Output Parameters: 1.1RF Input Frequency Range:-1) 24.250 - 24.450 GHz -2) 25.050 - 25.250 GHz 1.2IF O utp ut Freq ue nc y Ra nge: 1575 MHz ± 25 MHz (see 2.2.9) 1.3Small-Signal Conversion Gain:25 dB Min to 35 dB Max 4 dB max variation, (all conditions see 5.1) 1.4Gain Flatness: ± 1.0 dB over any 300 MHz Bandwidth at constant temperature 1.5Noise Figure:4.5 dB Max all conditions 1.6Input 1dB Compression (P 1d B ):-20 dBm Min 1.7Input Third-Order Intercept (IP3)-10 dBm Min 1.8Maximum RF Input (No Damage):+10 dBm 1.9Image Rejection:Sufficient image rejection to achieve NF of section 1.5 (all conditions see 5.1). 1.10Isolation: 1.10.1LO/IF:-15 dBm Max 1.10.2LO/RF:-5 dBm Max 1.11Port VSWR: 1.11.1RF Port2.3:1 Max (Transceiver shall be unconditionally stable, no in-band or out-of-band spurious signals or oscillations regardless of port termination.) 1.11.2Rx IF Port2.0:1 Max 1.12Spurious Output 1.12.1With -20 dBm RxRF input level -30 dBc Min (non harmonic) 1575 ± 25 MHz -50 dBm Max at {800 & 1505 MHz} ± 25 MHz -25 dBc Min (LO,RF Harmonics & Subharmonics; see note 2) 1.12.2With -70 dBm RF input level and a -40 dBm interference signal (CW) swept through 30 MHz to 110 GHz except at those frequencies where: the sw ept freque nc y is tw o cha nnels or less away from the RxRF. (minimum channel is 2.5 MHz) -30 dBc Min at 1575 ± 25 MHz Note: when the CW interference is inside RxRF ± 25 MHz , The specification at 1575 MHz collapses to the actual frequency deviation, down to a minimum of ± 5 MHz. -50 dBm Max at {800 & 1505 MHz} ± 25 MHz (Excludes the fundamental mixing products of CW interference and LO -25 dBc Min (LO,RF Harmonics & Subharmonics; see note 2) 1.12.2With no RXRF input signal TxIF at +5 dBm & Mute Off -83 dBm Max 1575 ± 25 MHz -50 dBm Max at {800& 1505 MHz} ± 25 MHz 1.13Phase Noise:-82 dBc/Hz @ 100 kHz offset Measured with Mute OFF (see 2.2.2) 1.14Group Delay Variation over any 20 MHz spa n 20 ns MAX 2.0Tx Input / Output Parameters: 2.1RF Tuning Range-1) 25.050 - 25.250 GHz -2) 24.250 - 24.450 GHz 2.2RF Output 2.2.1Output Power +20.0 dBm minimum all conditions (5 dBm ± 1 dB TX IF input) 2.2.2Output “Mute” level-30 dBm Max Mute “ON” is defined as the PA bias at 0 VDC Mute “OFF” is defined as the PA bias at +5 VDC (See 4.2) 2.2.3Output Power CompensationTo maintain a constant RF output power, all conditions (see 5.1), the Tx IF input power must not be varied by more than 8 dB Max. Additionally the output power shall be monotonically adjustable over + dBm to -30 dBm, by varying the TXIF power level from max TXIF (+6 dBm) to min TXIF (-52 dBm) . 2.2.4Phase Noise-82 dbc/Hz @ 100KHz Measured with Mute OFF (see 2.2.2) 2.2.5Output Flatness ± 1.0 db over 300 MHz Tune at constant temperature 2.2.6Spurious Output Offset from Transmit Carrier Frequency “fc” (see 2.1) -60 dBc Min in the range, fc ± 150 MHz , Pout = +20dBm Given the following Absolute Maximums: -50 dBm Max. from 30 MHz to 21.2 GHz -30 dBm Max. from 21.2 to 110 GHz 300 MHz 375 MHz -45 dB 0 dB Rated range of waveguide Passband Stopband Typical diplexer filter performance 2.2.7Tx-IF Port VSWR With 50 Ohm Drive Source 2.0 : 1 2.2.8RF Gain35 dB Max 2.2.9Tx to RX Spacing800 MHz 2.2.10TxIF Input Frequency 2375 MHz ± 25 MHz (Tx to Rx spacing of 800 MHz) 2.2.11Tx IF Power Input Maximum6 dBm 2.2.12Tx to Rx Isolation50 dB Min 2.2.13TXRF Port VSWR2.3:1 Max (Transceiver shall be unconditionally stable, no in-band or out-of-band spurious signals or oscillations regardless of port termination.) 3.0Tuning and Control Port Spe cificatio ns: Oscillator a nd inte rnal pre scalle rs must o pe rate from t he “se cond o DC supply. See 4.1 3.1LO Sample Output Frequency:LO divided by 24 (See 3.7) Monotonic over the entire tuning voltage range (see 3.4). 3.2LO Sample Prescaler Output Level-10 to 0 dBm into 50 ohms. 3.3LO Sample Prescaler Output Har monics Each integer harmonic shall be at -20 dBc or less into 50 ohms. -50 dBm Max at {800 & 1505 MHz} ± 25 MHz 3.4Tuning Voltage Range:+1.0 to +11.5 VDC over all operating conditions. 3.5Tuning Port Input Capacitance:1000 pf nominal 3.6RF Tuning Sensitivity Ratio Knm = (Kv/(NxM)): 8.0 – 16.0 MHz/V Example: RF tuning sensitivity = 360 MHz/V RF multiplier factor = 6 Prescaler divide ratio = 4 Knm = 360/(6x4) = 15 MHz/V 3.7LO Frequency RangeLO = 22.675 – 22.875 GHz (Tx High Band) LO = 26.625 – 26.825 GHz (Tx Low Band) (See 2.1) 4.0DC Powe r Re quire me nts: 4.1Operating Voltage: + 12.0 ± 0.2 VDC @ IDC MAX < 250 mA “second on” +5.0 ± 0.1 VDC @ IDC MAX < 1000 mA “on after VCO lock” -5.0 ± 0.1 VDC @ IDC MAX < 250 mA “first on” 4.2Tx PA Bias +5.0 VDC ± 0.1 VDC @ IDC MAX < 1000 mA “last on” 4.3Power consumption8.0 watt Max (all conditions) 5.0Environme ntal Conditions: 5.1Operating Temperature Range: -33 º C to +75 º C case temperature (see note 4) Instantaneous frequency stability of 100 KHz from center frequency (fc and no additional spurious output when subject to two consecutive temperature ramping cycles. a bc d e b = +75 C o a = +25 C o c = +75 C o d = -33 C o e = -33 C o f = +25 C o Dwell times are for 2 hr All temperatures are measured at case Ramp cycles are at 1 C/min o Temperature ramping cycle 5.2Storage Temperature Range: -40 º C to +85 º C 5.3Humidity: 5.3.1Operating85% Maximum, non condensing 5.3.2Storage95% Maximum, condensing. 5.4Shock and Vibration Operation Freque ncy J umping Instantaneous frequency stability of 100 KHz from center frequency (fc and no additional spurious output when subj…

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EXHIBIT # 10 FCC Requirements CFR 47 Part 2.1033,c (10) Frequency, Spurious and Power Control JXB24X4P-08T EXHIBIT 10 Frequency Control for 24 GHz DEMS Radio CFR 47 part 2.1055 / 101.107 (IO) Frequency setting and stabilization: Frequency Stability is a function of the Reference clock as shown in the specification sheet by Champion part number K 1 600. The requirement for the LMDS application ( CFR 47 part 101.107 ) is +/- .00 1 %. This radio will provide stability of better than +/- .0005 %. The following drawing shows the arrangement of the various frequency determining elements for the XP4 radio. Additionally, the process which the computer controls the setting for the required frequency is also illustrated in this section. Transmitter Frequency Control Circuit

P R O L INE A NTENNA S 19 Radio Waves,Inc. http://www.radiowavesinc.com 26 GHZ(24.25 - 26.50) HIGH-PERFORMANCEMICROWAVEANTENNAS FEATURES nAntenna diameters; • 1' (30 cm) • 1.5' (45 cm) • 2' (60 cm) • 3' (90 cm) nAntenna weights • 1' 17 lbs. (7.7 kg) • 1.5' 19 lbs. (8.6 kg) • 2' 27 lbs. (12.2 kg) • 3' 50 lbs. (22.5 kg) nHP models:high-performance, plain polarized nHPD models:dual polarized nIEC or EIA flanges available nDirect mountingfor RF units available nEase of installation: antennas shipped completely assembled, minimal mount required nPlanar radomesstandard with high-performance model nRugged and lightweightcast aluminum mount with fine adjustment for both azimuth and elevation nCompact size, due to Radio Waves innovative feed design nStandard white; other colors and/or logos available on request nCorrosive resistant: coated aluminum, hot dipped galvanized steel and stainless steel nThree year warranty 24.25 - 26.50 GHZELECTRICALSPECIFICATIONS(typical performance)* ModelDiameterGain,dBiBeamwidthX Pol.F/BVSWR Max. Numberft (cm)LowMidHighDegrees,3dBDisc.,dBRatio,dB(R.L.,dB) Plane Polarized HPLP1-261 (30)35.736.136.52.630551.4:1 (15.5) HPLP1.5-261.5 (45)38.238.639.02.030551.4:1 (15.5) HP2-262 (60)40.741.141.51.430691.4:1 (15.5) HP3-263 (90)44.244.645.01.030721.4:1 (15.5) Dual Polarized HPLPD1-261 (30)35.535.936.32.630551.4:1 (15.5) HPLPD1.5-261.5 (45)38.038.438.82.030551.4:1 (15.5) HPD2-262 (60)40.540.941.31.430 691.4:1 (15.5) HPD3-263 (90)44.044.444.81.030721.4:1 (15.5) *All specifications subject to change without notice. For regulatory compliances, contact Radio Waves. RW_datasheet_pages 3/30/00 12:40 PM Page 19

EXHIBIT # 17 FCC Requirements CRF 47 Part 2.1033,c (13) Modulation System Description JXB24X4P-08T 2.1033,c(4)&(5)&(6) Type of Emission, Necessary Bandwidth and Modulation Characteristics for 4XT1 and the 8XT1 Radio: The DMC XP4 T-Carrier radio is employed to process digital information of various types. Voice, data, television, and many other information types can be encoded and transmitted across this radio system. The emission designators, 5M00F7W, and 10M0F7W were developed by the following process: The necessary bandwidth was developed from the following equation: CFR 47 part 2.202, (b) For 4XT1 Data rate (including overhead): Bn = 2 DK + B B= R/log(base2) of S B= (7.249Mbits/sec.)/2 = 3.6245M Symbols/sec. Where: Bn = Necessary bandwidth in MHz R= Aggregate bit rate in bits/sec = 7.249 Mbits/sec. S= number of transmitter levels = 4 D= deviation in MHz = .687 MHz K= 1 for this modulation type Therefore Bn = (2) (.687E+6) (1) + 3.624E+6 = 5.00 MHz The F7W portion of the designator is derived as follows F = Frequency Modulation [CFR47 part 2.201 (c)] 7 = is the nature of the modulation signal [CFR47 part2.201 (d)] W = is the type of information transmitted [CFR47 part2.201 (e)] The resultant complete emission designator for the 4XT1 can be stated as 5M0OF7W For 8XT Data rate (including overhead): Bn = 2 DK + B B= R/log(base2) of S B= (14.48Mbits/sec.)/2 = 7.249M Symbols/sec. Where: Bn = Necessary bandwidth in MHz R= Aggregate bit rate in bits/sec = 14.48 Mbits/sec. S= number of transmitter levels = 4 D= deviation in MHz = 1.375 MHz K= 1 for this modulation type Therefore Bn = (2) (1.375+6) (1) + 7.249E+6 = 10.00 MHz The F7W portion of the designator is derived as follows F = Frequency Modulation [CFR47 part 2.201 (c)] 7 = is the nature of the modulation signal [CFR47 part2.201 (d)] W = is the type of information transmitted [CFR47 part2.201 (e)] The resultant complete emission designator for the 8XT1 can be stated as 10MOF7W Frequency Range: 1. 24,250 to 25,250 MHz Range of operating power: 30 db Refer to Exhibit 2.1033,c(4)&(5)&(6) and Exhibit 2.1033 ,c(9) for technical description of power control and operation.

Question #6 This radio is intended for point-to-point application. The commissions allows for this spectrum (24 GHz) to be used for point-to-point use within the DEMS bands. Therefore, the application is neither a Node nor a Subscriber as normally referred by point-to-multipoint applications.

Answer to question #1, dated 8/22/00 The address is 3325 South 116 St. Seattle, Wa. 98168, you were correct in the interpretation. Answer to Question #2, dated 8/22/00 Test Description: The transmitter output power measurements were made utilizing an automated test setup. Output power measurements were made at -33°C, +30°C, and +55°C. Measurements were taken with the Radio operating at a lowest channel, mid channel and then a highest channel. The measurements are taken by setting the data rate (via The front panel of the IDU), setting the frequency (via The front panel of the IDU), and then setting the output power to +17 dBm. The equipment is placed in an environment chamber to program the temperature. The actual output power readings were recorded as a function of operating carrier frequency, data rate, and temperature. And is show n below. Power Output for 4X Radio TemperatureLow Channel dBmMid Channel dBmHigh Channel dBm -33°C 16.816.6817.32 +30°C 17.0216.3616.46 +55°C 16.1917.2116.58 Power Output for 8X Radio TemperatureLow Channel dBmMid Channel dBmHigh Channel dBm -33°C 16.8416.8317.3 +30°C 16.9216.6716.27 +55°C 16.4217.2616.55 Answer to Question #3, dated 8/22/00 Referring to CFR47 Part 101.3, the commission allows operation under Digital Electronic Message Service, making use of point-to-point microwave facilities to interconnect digital termination systems. The location of each transmitter and its antenna is on rooftops and radiations are not in the path of personnel. Both ends of the link are identical and radiate the same power level as specified in the application.

EXHIBIT # 9 FCC Document 2.1033,c(9) Description: Tune-up Procedure Transmitter tune up procedure for this radio is performed by the transceiver vendor. The test are performed to the specification as found in Exhibit 7&8.

JXB24X4P-0 8T Antenna Emissions MASK Band 24,250 to 25,250 MHz Plots 1 – 2 for 4X Data Rates Plots 3 – 4 for 8X Data Rates

EXHIBIT # 19 FCC Requirements CFR 47 Part 2.1033,c (14) Data Package JXB24X4P-08T