NM5-MB-49-HPPoint to Point Wireless Bridge

Marquee™ P2P Bridge PRELIMINARY Quick Start Guide MNL-500267-001 – Rev ED2 1 Aug 2004 Introduction The Marquee P2P Bridge (MB-49) is a complete 4.9 GHz wireless point-to-point (p-p) or point-to-multipoint (p-mp) system that links two Ethernet LANs together. It consists of two high-gain directional antennas and a pair of OFDM radios in a rugged outdoor enclosure. They connect to the LAN's Ethernet Switch on each end with an outdoor-rated Ethernet cable ordered separately. It is ideal for connecting two office LANs together, or for linking a WIPOP site to an Internet backbone. The Marquee P2P Bridge uses TurboCell software which supports VLAN bridging (802.1q protocol). The Marquee P2P Bridge will accommodate virtually an unlimited number of client MAC addresses on each side of the link. The unit currently supports a single channel. Marquee P2P Bridge Kit Contents 1. Two outdoor radios with RF connector for external antenna and mounting hardware 2. Two Cat 5 DC Power Injectors (surge protected Power Injectors are available as an option) 3. Two 110/240 VAC to 48 VDC power supplies 4. Windows-based YDI Configurator software 5. Two 3 foot low-loss coaxial cables 6. Two high-gain directional antennas YDI EtherAnt outdoor Ethernet cables must be ordered separately. Available lengths are 50, 100, 200, or 300 ft. Figure 1 – Marquee P2P Bridge Kit Contents The Marquee P2P Bridge is intended for professional installation only on fixed outdoor structures. Please review the entire manual before powering up or deploying these units. Installation NOTE: All connectors must be properly water-proofed with all-weather electrical tape, Permagum, or equivalent. Do not use Silicon glue. The Marquee P2P Bridge radio unit is installed by means of a pole mount adaptor bracket that is secured to the pole using two metal hose type clamps. Figure 1 shows the hardware provided to mount the outdoor RF Unit. 1. Install the outdoor unit pole mount adaptor bracket using the supplied metal hose type clamps (see Figure 2). Figure 2 – Detail Showing Outdoor Unit Pole Mount Bracket 2. Align the four mounting studs on the outdoor unit with the bracket holes (see Figure 3) and secure to the bracket by pushing down the latches as shown in Figures 4a and 4b. Figure 3 – Attaching the Marquee P2P Bridge Outdoor Unit to the Pole Mount Bracket Figure 4a – Latching Bracket to Pole Mount 1 2 3 2 3 Marquee™ P2P Bridge Quick Start Guide PRELIMINARY Aug 2004 2 MNL-500267-001 – Rev ED2 Figure 4b – Securing the Latches to the Pole Mount Bracket 3. Ensuring that there is no DC power applied to the DC Power Injector, plug the round connector of the outdoor Ethernet cable into the rear jack of the unit (Fig. 5), making sure the notch is correctly aligned with the tab on the jack as shown in Figure 6, then turn the round locking nut clockwise as you push in until it securely fastens onto the jack. WARNING: Please verify that the round connector is properly plugged into the rear jack of the antenna prior to connecting DC power because it is possible to push it in the wrong way if enough force is used. If DC Power is applied while you are attempting to insert the round connector into the jack, it is possible that, as you rotate the plug in an effort to find the key, DC power pins will momentarily touch the Ethernet pins. If this happens the Ethernet circuitry on the board will be damaged. Any harm caused by this action will not be covered by the factory warranty and will be a billable repair. Figure 5 – Connecting the Outdoor Ethernet Cable Figure 6 – Plugging the Round Connector 4. Attach the other end of the outdoor Ethernet cable to the Cat 5 DC Power Injector at port RJ-45 labeled “To ANT.” NOTE: The Cat 5 DC Power Injector is not in a waterproof enclosure and must be protected from the weather. It can be permanently mounted to a surface using the double stick tape found on the back of it. 5. Connect the Ethernet cable labeled “To PC or Router” from the Cat 5 DC Power Injector to your router, switch or hub. If you connect to a computer or PC, a crossover cable or adapter will be needed. 6. If your unit is placed on a non-metal pole or structure, install a #6 AWG insulated ground cable (not provided) to the ground connector in the back of the radio as shown in Figure 7. Use a self- threading screw and a flat washer to fasten the earth lug. This provides safeguard against lightning. For maximum protection, YDI also recommends the use of its optional surge protected DC Injector available from your YDI dealer (part No. 304- 800620-002). This DC Injector has an additional wire to be connected to ground as shown on Fig. 8. Figure 7 – Detail Showing Ground Cable Connection (this provides maximum lightning protection) Plug Round Connector of the Outdoor Ethernet Cable Here Marquee™ P2P Bridge PRELIMINARY Quick Start Guide MNL-500267-001 – Rev ED2 3 Aug 2004 Figure 8 – Installation of the Optional YDI Surge Protected DC Injector 7. Plug the antenna coaxial cable into the N-type female connector of the unit as shown in Figure 9. Plug the AC Adapter into an AC outlet and connect it to the “DC Power” jack on the Cat 5 DC Power Injector. Perform antenna alignment procedures at both sites. Proper antenna alignment is crucial for the correct operation of the Marquee Bridge 49 system and should only be accomplished by experienced professionals. After that your installation is complete. WARNING: The P2P must be operated with a proper antenna or microwave terminator plugged into the N-type female jack of the unit. Operating the unit with nothing connected to the antenna jack may result in damage to the TX section of the unit which will not be covered by the factory warranty and will be a billable repair. Figure 9 – Connecting the Antenna Coaxial Cable to the P2P LEDs The Green LED is steady on when power is applied (Figure 10). Figure 10 – Marquee P2P Bridge LEDs Installing the Management Software The Windows-based YDI Configurator software can be installed …

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Response to ATCB Comments FCC ID: NB5-MB-49-HP 1 Washington Laboratories, Ltd. 7560 LINDBERGH DRIVE GAITHERSBURG, MD 20879 (301) 417 – 0220 FAX # (301) 417 - 9069 March 21, 2005 Mr. William Graff American Telecommunications Certification Body Inc. 6731 Whittier Ave McLean, VA 22101 RE: Comments of March 21, 2005 APPLICATION: NB5-MB-49-HP YDI Wireless Dear Mr. Graff: Below are the comments that you have provided regarding the application for certification referenced above. Our responses to those comments are in bold italic. Many responses refer you to additional exhibit(s) which has been uploaded to the application folder at the ATCB website. Thank you for your attention. Please feel free to contact us for any additional information that you may require. New exhibits uploaded: 1) MPE Report 2) Test Report Regards, Mike Violette President WLL Project: 8441 Response to ATCB Comments FCC ID: NB5-MB-49-HP 2 I have a few comments on this Application. Depending on your responses, kindly understand there may be additional comments. There are multiple discrepancies between DA 04-3165, FCC 04-265 and the most current rules available online from the GPO. You may find the published versions of Part 90 Subpart Y to which I refer at: http://www.gpoaccess.gov/ecfr/index.html Thank you for the documents you provided. In essence FCC 04-265 calls out for changes to the RF power and emission masks [Appendix B], while DA 04-3165 calls out for changes in licensing. This leaves still much room for discussion on a number of issues. 1.) The channel plan of 90.1213 does not appear to be affected. You state in your response that a single channel 20MHz wide at 4965 is utilized. My reading of 90.213 still seems to expect that the center frequency of each emission must fall directly upon the center channel frequencies called out in this table. Please review. R. We don’t agree. The Rules allow for the aggregation of four 5MHz channels to create a 20MHz wide data channel. We submit that the aggregation of Channels 8 through 11 create the 20 MHz wide “channel” that is allowed under the rules. 4965 MHz simply is the center of the four channels. Hence, our implementation would map out as follows: To look at it another way, if we set the center of a 20MHz wide channel at the center of one of the 5MHz data channels, the resulting 20 MHz spectrum would fully occupy three 5MHz channels and portions of two other 5MHz channels. If the center of the emission had to fall in the center of one of the channels, five of the channels would be affected as follows: 5M5M5M5M 5M 5M5M 5 Channel occupancy 5M5M5M5M 5M 5M5M 4 Channel occupancy Response to ATCB Comments FCC ID: NB5-MB-49-HP 3 2.) I accept your test method for using the spectrum analyzer RMS detection function of this complex OFDM signal. However, I still have some concerns. Using the instrument manufacturer’s explanation, the RMS value is computed for each “bucket” within the trace and then algebraically summed together. Looking at your plot, we do not have a smooth, symmetrical emission; we have a “lumpy” emission characteristic of multi carrier OFDM signals. I would like to know if the measured RMS values are affected by both sweep time and RBW settings. Moreover, using the standard 1% rule, a RBW less than 16.5MHz/100 usually should not be used unless additional explanation is provided. My preference is to know if this RMS measurement would be effected by an RBW of 300KHzor more and a sweep time greater than 50 seconds. Best accuracy is also obtained when the emission is near the top of the reference level due to errors in the log amp. Kindly help me understand the RMS detection function of this instrument. In addition, please confirm that the measurement was made over a “continuous interval” without any periods of “Tx off”. Kindly refer to 90.1215(b). R. Additional plots have been taken. The “lumpy” emission is characteristic of the SAMPLE mode that the analyzer needs to be in to take the correct rms measurement (as directed in the User’s Manual for the instrument). MAX HOLDing the signal places it back into Peak mode. Three plots are provided; the reference level has been adjusted to bring the emission to the top of the screen. In summary, the sweep time affects the channel power a great deal; thus, the channel power is reported with the fastest sweep time. The channel power is nominally the same between this re-measured data and the previously-reported values (10.8dBm vs 10.2dBm). Plot 1: Channel power with RBW=300kHz and VBW=3MHz; sweep time 50 ms Plot 2: Channel power with RBW=300kHz and VBW=3MHz; sweep time 50 seconds Plot 3: Channel power with RBW=300kHz and VBW=300kHz; sweep time 50 ms Response to ATCB Comments FCC ID: NB5-MB-49-HP 4 PLOT #1: Channel power with RBW=300kHz and VBW=3MHz; sweep time 50 ms Response to ATCB Comments FCC ID: NB5-MB-49-HP 5 Plot 2: Channel power with RBW=300kHz and VBW=3MHz; sweep time 50 seconds Response to ATCB Comments FCC ID: NB5-MB-49-HP 6 Plot 3: Channel power with RBW=300kHz and VBW=300kHz; sweep time 50 ms 3.) I accept your comments on the RF Tune Up procedure. However, my goal was to find the “set points” or target RF output values for this device. These target values can be provided to the Commission as part of a Confidential document, if so desired. In addition I have some confusion over the frequencies available for this device. The tune-up indicates a frequency “list” is available in software, but elsewhere you indicate this is a single-channel device which only transmits on 4965MHz. Please review. R. We use a custom tool to set frequencies and RF power values to those that are certified. The same tool is used throughout the entire Marquee product family. Each unit, after full build, is tested and calibrated to this in production. Additionally, the settings are logged for future records and as a protection, our customers cannot modify these settings The units tested by WLL for FCC certification went through the same procedure…

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Response to ATCB Comments FCC ID: NB5-MB-49-HP 1 Washington Laboratories, Ltd. 7560 LINDBERGH DRIVE GAITHERSBURG, MD 20879 (301) 417 – 0220 FAX # (301) 417 - 9069 March 10, 2005 Mr. William Graff American Telecommunications Certification Body Inc. 6731 Whittier Ave McLean, VA 22101 RE: Comments of January 22, 2005 APPLICATION: NB5-MB-49-HP YDI Wireless Dear Mr. Graff: Below are the comments that you have provided regarding the application for certification referenced above. Our responses to those comments are in bold italic. Many responses refer you to additional exhibit(s) which has been uploaded to the application folder at the ATCB website. Thank you for your attention. Please feel free to contact us for any additional information that you may require. Regards, Mike Violette President WLL Project: 8441 Please confirm that this device is intended to operate under the provisions of Part 90 Subpart Y. The following questions are based upon this assumption. WLL: 1.) This device is described as a point-to-point or point-to-multipoint system. Is the Applicant aware of the potential site license limitations imposed by 90.1207(d)? R. The applicant states that the site limitations imposed by 90.1207(d) 2.) Kindly show how this device will meet the channelization requirements of 90.1213. Please provide a complete list of all channels and their associated bandwidths. R. The unit is a single channel at 4965MHz with an occupied bandwidth of 20MHz. Reference Revision 1 of test report. Response to ATCB Comments FCC ID: NB5-MB-49-HP 2 3.) Please provide information on the peak transmit power and the associated bandwidth per 90.1215(a). Please provide evidence of compliance with the spectral power density requirements also found in this subsection. R. See Section 5 of Revision 1 of Test Report. 4.) Please note the method for power measurement in 90.1215(b). Your report identifies the diode detector/signal generator substitution technique for power measurement. If RMS equivalent measurements are not possible please specify how your method is equivalent. A presentation of oscilloscope plots showing the EUT fundamental and the reference levels measured and used would be helpful. R. We used the internal function of the HP 8564E to perform these measurements per the requirements of 90.1215(b). See Section 5 of Revision 1 of Test Report. 5.) Given the channel bandwidths of 90.1213 please reconsider the occupied bandwidth masks presented in the Test Report. In addition, please provide vertical graticule on figures 3, 4, 17, and 20. R. See Section 5 of Revision 1 of Test Report. 6.) Licensed radios must show all applicable emission designators and the applicable frequency range and power for each designator. Please modify your Form 731. R. Form 731 modified to reflect correct emissions designator. 7.) The label is incorrect for a Licensed radio transmitter also which contains a receiver. The user has rights to non-interference that are not extended to Unlicensed Part 15 products. Therefore the labeling of 15.19(a)(1) would be more appropriate. R. Label Information has been uploaded. 8.) The Parts List is incomplete and does not cover the 802.11a/g radio. R. Parts list for the 802.11a/b radio is uploaded. 9.) The Tune Up procedure is inadequate. Please describe how this device is tuned up during production and what assurances are available that RF power and frequency limitations to be specified on the Grant of Equipment Authorization are maintained. R. This device is “Calibrated” at production time with a unique non-public SW. This SW (Cannonball) connects the RF output into a Power Meter, and, for the released final-assemblies, calibrates each allowed frequency to its certified power output. It also “sets” the respective final- assembly number into the device. Production operators, using this SW, select which final- assembly they wish to calibrate, from a list of released final-assemblies, created from FCC- Grants. This procedure is implemented on all the Marquee products (our main product line, of which the 4.9GHz Hi-Pwr is a subset). Users of our equipment, with our published configurator SW, are allowed to only “select” the programmed frequency from a pull-down menu. They CANNOT select a frequency not in the list, nor are they able to exceed Max-RF-Power that is programmed into at the Final Assembly. This maintains the RF-power and frequency limitations specified on the Grant. Response to ATCB Comments FCC ID: NB5-MB-49-HP 3 Additionally, our label maker SW recovers the final-assembly number from the device and the correct label is printed onto the final-assembly (containing the correct FCC ID). For an additional check, each final-unit is connected OverTheAir with a reference unit, to verify that the unit is operating and receiving RF correctly. 10.) Frequency stability was performed using a 120vac supply. However, the operational description indicated this device runs off of 48VDC. In instances where DC power only is available, it would be prudent to do frequency stability testing using a DC supply. Please provide frequency stability data using the DC supply only. R. The unit is supplied with an AC/DC power supply which is connected to a DC Power Injector (also provided) which puts DC on Ethernet and then is supplied to the unit. Therefore, AC power frequency stability measurements are appropriate. 11.) In addition to the RF Exposure evaluation, a statement confirming compliance with the RF Safety requirements for both fundamental and unwanted emissions must be submitted. Please see 90.1217. R. We disagree, 90.1217 applies to “mobile or portable” devices. These units are “fixed-wireless” so the rule does not apply. 12.) The RF Exposure exhibit also indicates that additional antennas may be used with the system. Please note the allowed transmit power may change when antennas greater than 9dBi are utilized. See 90.1215(a). R. We disagree. 90.1217 allows an exception for “point-to-point and point-to-multipoi…

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A Division of YDI Wireless, Inc. 800 Lee Highway Falls Church, VA 22042 703-205-0600 Letter of Agency Dec 10, 2004 American Telecommunications Certification Body, Inc. 6731 Whittier Avenue Suite C110 McLean, VA 22101 To Whom It May Concern: Please be advised that Terabeam Wireless, a Division of YDI Wireless, Inc. authorizes Washington Laboratories, Ltd. of 7560 Lindbergh Dr, Gaithersburg, MD 20879, to act on our behalf, until otherwise notified, for applications submitted to American Telecommunications Certification Body, Inc. (ATCB) or directly to Federal Communications Commission. We certify that no party (as defined in 47 CFR 1.2002) to this application, including myself, is subject to a denial of federal benefits, that include FCC benefits, pursuant to section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C., 853A. Thank you for your attention to this matter. Kedar Kapoor Sr. Systems/SW Engineer Terabeam Wireless A Division of YDI Wireless, Inc.

A Division of YDI Wireless, Inc. 800 Lee Highway Falls Church, VA 22042 703-205-0600 Request for Confidentiality 10 Dec 2004 American Telecommunications Certification Body, Inc. 6731 Whittier Avenue Suite C110 McLean, VA 22101 RE: Certification Application FCC ID: NM5-MB-49-HP Please be advised that the following exhibits should be held confidential on behalf of Terabeam Wireless, a Division of YDI Wireless, Inc.: • Schematics • Parts Lists • Operational Description • Block Diagram The application contains technical information that Terabeam Wireless, a Division of YDI 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. Kedar Kapoor Sr. Systems/SW Engineer Terabeam Wireless A Division of YDI Wireless, Inc.

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 January 22, 2005 RE: YDI Wireless FCC ID: NB5-MB-49-HP I have a few comments on this Application. Depending on your responses, kindly understand there may be additional comments. Please confirm that this device is intended to operate under the provisions of Part 90 Subpart Y. The following questions are based upon this assumption 1.) This device is described as a point-to-point or point-to-multipoint system. Is the Applicant aware of the potential site license limitations imposed by 90.1207(d)? 2.) Kindly show how this device will meet the chanelization requirements of 90.1213. Please provide a complete list of all channels and their associated bandwidths. 3.) Please provide information on the peak transmit power and the associated bandwidth per 90.1215(a). Please provide evidence of compliance with the spectral power density requirements also found in this subsection. 4.) Please note the method for power measurement in 90.1215(b). Your report identifies the diode detector/signal generator substitution technique for power measurement. If RMS equivalent measurements are not possible please specify how your method is equivalent. A presentation of oscilloscope plots showing the EUT fundamental and the reference levels measured and used would be helpful. 5.) Given the channel bandwidths of 90.1213 please reconsider the occupied bandwidth masks presented in the Test Report. In addition, please provide vertical graticule on figures 3, 4, 17, and 20. 6.) Licensed radios must show all applicable emission designators and the applicable frequency range and power for each designator. Please modify your Form 731. 7.) The label is incorrect for a Licensed radio transmitter also which contains a receiver. The user has rights to non-interference that are not extended to Unlicensed Part 15 products. Therefore the labeling of 15.19(a)(1) would be more appropriate. 8.) The Parts List is incomplete and does not cover the 802.11a/g radio. 9.) The Tune Up procedure is inadequate. Please describe how this device is tuned up during production and what assurances are available that RF power and frequency limitations to be specified on the Grant of Equipment Authorization are maintained. 10.) Frequency stability was performed using a 120vac supply. However, the operational description indicated this device runs off of 48VDC. In instances where DC power only is available, it would be prudent to do frequency stability testing using a DC supply. Please provide frequency stability data using the DC supply only. 11.) In addition to the RF Exposure evaluation, a statement confirming compliance with the RF Safety requirements for both fundamental and unwanted emissions must be submitted. Please see 90.1217. 12.) The RF Exposure exhibit also indicates that additional antennas may be used with the system. Please note the allowed transmit power may change when antennas greater than 9dBi are utilized. See 90.1215(a). 13.) Please provide photographs of all antennas for which approval is sought at this time. 14.) Per 2.1033(c)(7) please identify the maximum power rating as defined in the applicable part(s) of the rules. 15.) Per 2.1033(c)(8) please provide 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. z Page 2 January 22, 2005 16.) Please provide a data sheet including filter response on the external filter used for harmonic suppression. This should be included in the Parts List. 17.) Please clarify if both the 2.4GHz 802.11g and 5GHz 802.11a signals are used by this device and fed to the amplifier. It is unclear if both portions of the 802.11b/g card are utilized. A more detailed description indicating how the 802.11b/g radio signal is up converted to the 4.9GHz band would be helpful. 18.) Was the Terrabeam radio rotated about it’s axis on three orthogonal planes for spurious emission testing? The Test Setup photographs do not give me a clear indication. 19.) Since this broadband radio has two bandwidths with two emission designators, and since the limits of 90.210(l) is expressed in terms of dBm/MHz, it would be prudent to measure the radiated spurs on both applicable bandwidths. Please review. 20.) FYI: For your convenience, I am also attaching portions of 90.210(l), Part 90 Subpart Y, and portions of the Frequency Allocation table in Part 2. William H. Graff President and Director of Engineering mailto: [email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 March 21, 2005 RE: YDI Wireless FCC ID: NM5-MB-49-HP I have a few comments on this Application. Depending on your responses, kindly understand there may be additional comments. There are multiple discrepancies between DA 04-3165, FCC 04-265 and the most current rules available online from the GPO. You may find the published versions of Part 90 Subpart Y to which I refer at: http://www.gpoaccess.gov/ecfr/index.html Thank you for the documents you provided. In essence FCC 04-265 calls out for changes to the RF power and emission masks [Appendix B], while DA 04-3165 calls out for changes in licensing. This leaves still much room for discussion on a number of issues. 1.) The channel plan of 90.1213 does not appear to be affected. You state in your response that a single channel 20MHz wide at 4965 is utilized. My reading of 90.213 still seems to expect that the center frequency of each emission must fall directly upon the center channel frequencies called out in this table. Please review. 2.) I accept your test method for using the spectrum analyzer RMS detection function of this complex OFDM signal. However, I still have some concerns. Using the instrument manufacturer’s explanation, the RMS value is computed for each “bucket” within the trace and then algebraically summed together. Looking at your plot, we do not have a smooth, symmetrical emission; we have a “lumpy” emission characteristic of multi carrier OFDM signals. I would like to know if the measured RMS values are affected by both sweep time and RBW settings. Moreover, using the standard 1% rule, a RBW less than 16.5MHz/100 usually should not be used unless additional explanation is provided. My preference is to know if this RMS measurement would be effected by an RBW of 300KHzor more and a sweep time greater than 50 seconds. Best accuracy is also obtained when the emission is near the top of the reference level due to errors in the log amp. Kindly help me understand the RMS detection function of this instrument. In addition, please confirm that the measurement was made over a “continuous interval” without any periods of “Tx off”. Kindly refer to 90.1215(b). 3.) I accept your comments on the RF Tune Up procedure. However, my goal was to find the “set points” or target RF output values for this device. These target values can be provided to the Commission as part of a Confidential document, if so desired. In addition I have some confusion over the frequencies available for this device. The tune-up indicates a frequency “list” is available in software, but elsewhere you indicate this is a single-channel device which only transmits on 4965MHz. Please review. 4.) Your response to item 12 appears to indicate that antennas with an expected gain of up to 26dBi are possible with this device. However, the RF Exposure evaluation only shows antennas at 10dBi. Please review. RF exposure evaluation also shows a channel of 4955MHz – different from what is claimed elsewhere in this filing. 5.) It is unlikely that the full 36-60VDC supply is providing power to the final amplifying circuitry. For voltage and current through the finals, use the regulated voltage that actually appears on the output stage. The reason for this rule is to compare the total power consumed with the total RF power output as a “reality check” for the examiner. 6.) Kindly provide a calculation of how you determined the limits of Table 6. 7.) I do not agree with your response about testing three orthogonal planes. Even case radiation at 4.9GHz can be very “peaky”. Consequently, it is important to follow this procedure regardless of the form factor of\f the device. z Page 2 March 21, 2005 William H. Graff President and Director of Engineering mailto: [email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

August 17, 2007 William Graff AmericanTCB 6731 Whittier Avenue, Suite C110 McLean, VA 22101 Re: FCC ID: NM5-MB-49-HP Applicant: YDI Wireless 731 Confirmation Number: TC814284 Date of Original Email: 08/15/2007 Dear Mr. Graff, In reference to your email of August 16, 2007, …

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