BV8MBS700A100SkyMaster 700 Base Station

M/A-COM, Inc. 221 Jefferson Ridge Parkway Lynchburg, VA 24501 Telephone: 434.455.9527 FAX: 434.455.6851 [email protected] www.macom.com June 9, 2004 American TCB, Inc. 6731 Whittier Avenue Suite C110 McLean, VA 22101 Subject: FCC ID: BV8MBS700A100 Original submission M/A-COM seeks Equipment Authorization Grant for SkyMASTR 700 MHz base station LMR radio equipment. Exhibits include photographs, schematics, parts list, block diagram, tune up procedure, FCC Part 90 and 15 compliance verification reports, and measurement data. There is no Operator nor Installation manual with this base station as it is factory configured per customer order, installed by M/A-COM field service personnel (or M/A-COM trained customer technicians) and no user available controls or adjustments are available. Special software tools are required to make setting adjustments. It is merely connected to tower mounted site antenna, control interface cabling, powered up, and it is fully operational. Confidentiality letter and Rhein Tech Laboratories, Inc. agent authorization letter to act on M/A-COM’s behalf for this original submission, have been provided as exhibits as well. Thank you for your kind consideration and timely review for this new product entry to the M/A-COM trunked LMR product family. Sincerely, Daryl Popowitch Regulatory Manager, Engineering Project Manager M/A-COM, Inc. – Lynchburg, VA

M/A-COM, Inc. 221 Jefferson Ridge Parkway Lynchburg, VA 24501 Telephone: 434.455.9527 FAX: 434.455.6851 [email protected] www.macom.com June 25, 2004 American TCB, Inc. 6731 Whittier Avenue Suite C110 McLean, VA 22101 Subject: FCC ID: BV8MBS700A100 Original submission SkyMASTR 700 MHz LMR base station ATTESTATION §90.541 of the Commission’s rules specify transmitter power limits for mobile terminals, portable terminals, and base stations. Transmitters with low power channel capability listed in §90.531(b)(3), and §90.531(b)(3), have limitations of no more than 2 watts (ERP). §90.545 of the Commission’s rules, as referred to in §90.541, have further specification for base station power (ERP) and antenna height (HAAT) as related to distance, contour, etc. M/A-COM, Inc. makes application for Grant of Equipment Authorization herein, with the understanding that at the time of site licensing, Commission rules governing base stations are to be applied and those power limitations of low power channel capability listed in §90.531(b)(3) and §90.531(b)(3) are applicable specifically to terminals. Sincerely, Daryl Popowitch Regulatory Manager, Engineering Project Manager M/A-COM, Inc. – Lynchburg, VA

M/A-COM, Inc. 221 Jefferson Ridge Parkway Lynchburg, VA 24501 Telephone: 434.455.9527 FAX: 434.455.6851 [email protected] www.macom.com June 9, 2004 American TCB, Inc. 6731 Whittier Avenue Suite C110 McLean, VA 22101 Subject: FCC ID: BV8MBS700A100 Original submission CONFIDENTIALITY M/A-COM, Inc. wishes to submit this confidentiality letter for the record on FCC ID: BV8MBS700A100 SkyMASTR 700 MHz base station LMR radio equipment. M/A-COM, Inc. is requesting that schematic diagrams, parts lists, block diagrams, tune up procedure, and operational descriptions for this original submission not be made routinely available for public inspection. M/A-COM, Inc. considers the information in these exhibits to be classified as trade secrets, pursuant to 47 CFR Section 0.457 and Section 0.459 of the FCC rules. Thank you for your attention to this matter. Daryl Popowitch Regulatory Manager Engineering Project Manager M/A-COM, Inc. – Lynchburg, VA

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 June 23, 2004 RE: FCC ID: BV8MBS700A100_ATCB001440 Attention: Rick McMurray / Kathy Grzovic I have a few comments on this Application. Please note that further comments may arise in response to answers provided to the questions below. 1. Please note that the photos on pages 18, 19 and 20 of the internal photo exhibit are not clear. Please provide photos that clearly show the components and board structures. 2. If the manual digital size is too large, please provide that portion of the installation manual that shows all of the FCC regulatory notices and statements have been addressed. IF the installation manual is of a size less than 4Meg, please provide the installation manual. Please note that if this manual is desired to be confidential, please include this in the confidentiality request letter. 3. As the device appears that is may work on one or more of the channels between channels 1 through 8 in the 764 to 767MHz band, please explain how this device meets 90.541(d) which states, “Transmitters operating on the narrowband low power channels listed in §§90.531(b)(3), 90.531(b)(4), must not exceed 2 watts (ERP).” Dennis Ward 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 June 23, 2004 RE: FCC ID: BV8MBS700A100_ATCB001440 Attention: Rick McMurray / Kathy Grzovic I have a few comments on this Application. Please note that further comments may arise in response to answers provided to the questions below. 1. Please note that the photos on pages 18, 19 and 20 of the internal photo exhibit are not clear. Please provide photos that clearly show the components and board structures. Response : Please refer to the additional Internal Photograph exhibit uploaded with this response. 2. If the manual digital size is too large, please provide that portion of the installation manual that shows all of the FCC regulatory notices and statements have been addressed. IF the installation manual is of a size less than 4Meg, please provide the installation manual. Please note that if this manual is desired to be confidential, please include this in the confidentiality request letter. Response : Please refer to the Cover Letter exhibit uploaded with this response for information on the manual. 3. As the device appears that is may work on one or more of the channels between channels 1 through 8 in the 764 to 767MHz band, please explain how this device meets 90.541(d) which states, “Transmitters operating on the narrowband low power channels listed in §§90.531(b)(3), 90.531(b)(4), must not exceed 2 watts (ERP).” Response : Please refer to the Attestation Letter uploaded with this response. Dennis Ward 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.

M/A-COM, Inc. 221 Jefferson Ridge Parkway Lynchburg, VA 24501 Telephone: 434.455.9527 FAX: 434.455.6851 [email protected] www.macom.com June 9, 2004 To Whom It May Concern: The following organization is granted authority to act on M/A-COM’s behalf, to file technical reports, measurements, and forms for M/A-COM equipment with FCC ID: BV8MBS700A100, SkyMASTR 700 MHz base station LMR radio equipment, as it applies to a new submission and EA Grant. Ms. Kathy Grzovic Rhein Tech Laboratories, Inc. 360 Herndon Parkway, Suite 1400 Herndon, VA 20170 We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse ACT of 1988, U.S.C.862. Further, no party, as defined in 47 CFR 1.2002(b), to the application is subject to denial of federal benefits, that includes FCC benefits. Sincerely, Daryl Popowitch Regulatory Manager, Engineering Project Manager

To:William Graff [email protected] From:Tim Harrington [email protected] FCC Equipment Authorization Branch Re:FCC ID:BV8MBS700A100 Applicant:M/A Com Inc Correspondence Number:13124 731 Confirmation Number:TC827699 Date of Original E-Mail:07/28/2004 Subject:audit TCB to address: Grant notes/filing does not seem consistent with TCB training notes, e.g., May03 - please explain and/or revise: "Example grant comments and conditions - when site licensing is not required - - device must operate with the specific antennas and installation requirements described in this filing - - identify the device is approved for outdoor use only - - antennas used for this device must be installed to provide ## meters from all persons and the antenna gain must not exceed ## dBi - - device operates with outdoor antenna(s) for uplink and indoor antenna(s) for downlink frequencies - - this device, including its antenna(s), must be professionally installed as specified in this filing for meeting RF exposure compliance requirements - - device must operate with a maximum duty factor not exceeding ## % to satisfy RF exposure compliance requirements - - the RF exposure label described in this filing must be displayed on all antenna(s) operating with this device - - this device has not been tested and is not approved for use in co-location with other transmitters - - device must operate in the transmitter co-location configurations identified in this filing - - site dependent co-location configurations must be handled in accordance with 1.1307(b)3 The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information within 30 days of the original e-mail date may result in application dismissal pursuant to Section 2.917(c). DO NOT Reply to this email by using the Reply button. In order for your response to be processed expeditiously, you must upload your response via the Internet at www.fcc.gov, E-Filing, OET TCB/Accreditor Electronic Filing, TCB Login, Submit Correspondence. 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 e-mail address listed below the name of the sender. To:Daryl Popowitch [email protected] From:Tim Harrington [email protected] FCC Equipment Authorization Branch Re:FCC ID:BV8MBS700A100 Applicant:M/A Com Inc Correspondence Number:13125 731 Confirmation Number:TC827699 Date of Original E-Mail:07/28/2004 Subject:audit TCB to address: Grant notes/filing does not seem consistent with TCB training notes, e.g., May03 - please explain and/or revise: "Example grant comments and conditions - when site licensing is not required - - device must operate with the specific antennas and installation requirements described in this filing - - identify the device is approved for outdoor use only - - antennas used for this device must be installed to provide ## meters from all persons and the antenna gain must not exceed ## dBi - - device operates with outdoor antenna(s) for uplink and indoor antenna(s) for downlink frequencies - - this device, including its antenna(s), must be professionally installed as specified in this filing for meeting RF exposure compliance requirements - - device must operate with a maximum duty factor not exceeding ## % to satisfy RF exposure compliance requirements - - the RF exposure label described in this filing must be displayed on all antenna(s) operating with this device - - this device has not been tested and is not approved for use in co-location with other transmitters - - device must operate in the transmitter co-location configurations identified in this filing - - site dependent co-location configurations must be handled in accordance with 1.1307(b)3 The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information within 30 days of the original e-mail date may result in application dismissal pursuant to Section 2.917(c). DO NOT Reply to this email by using the Reply button. In order for your response to be processed expeditiously, you must upload your response via the Internet at www.fcc.gov, E-Filing, OET TCB/Accreditor Electronic Filing, TCB Login, Submit Correspondence. 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 e-mail address listed below the name of the sender.

To:William Graff [email protected] From:Tim Harrington [email protected] FCC Equipment Authorization Branch Re:FCC ID:BV8MBS700A100 Applicant:M/A Com Inc Correspondence Number:13124 731 Confirmation Number:TC827699 Date of Original E-Mail:07/28/2004 Subject:audit TCB to address: Grant notes/filing does not seem consistent with TCB training notes, e.g., May03 - please explain and/or revise: "Example grant comments and conditions - when site licensing is not required - - device must operate with the specific antennas and installation requirements described in this filing - - identify the device is approved for outdoor use only - - antennas used for this device must be installed to provide ## meters from all persons and the antenna gain must not exceed ## dBi - - device operates with outdoor antenna(s) for uplink and indoor antenna(s) for downlink frequencies - - this device, including its antenna(s), must be professionally installed as specified in this filing for meeting RF exposure compliance requirements - - device must operate with a maximum duty factor not exceeding ## % to satisfy RF exposure compliance requirements - - the RF exposure label described in this filing must be displayed on all antenna(s) operating with this device - - this device has not been tested and is not approved for use in co-location with other transmitters - - device must operate in the transmitter co-location configurations identified in this filing - - site dependent co-location configurations must be handled in accordance with 1.1307(b)3 The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information within 30 days of the original e-mail date may result in application dismissal pursuant to Section 2.917(c). DO NOT Reply to this email by using the Reply button. In order for your response to be processed expeditiously, you must upload your response via the Internet at www.fcc.gov, E-Filing, OET TCB/Accreditor Electronic Filing, TCB Login, Submit Correspondence. 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 e-mail address listed below the name of the sender. To:Daryl Popowitch [email protected] From:Tim Harrington [email protected] FCC Equipment Authorization Branch Re:FCC ID:BV8MBS700A100 Applicant:M/A Com Inc Correspondence Number:13125 731 Confirmation Number:TC827699 Date of Original E-Mail:07/28/2004 Subject:audit TCB to address: Grant notes/filing does not seem consistent with TCB training notes, e.g., May03 - please explain and/or revise: "Example grant comments and conditions - when site licensing is not required - - device must operate with the specific antennas and installation requirements described in this filing - - identify the device is approved for outdoor use only - - antennas used for this device must be installed to provide ## meters from all persons and the antenna gain must not exceed ## dBi - - device operates with outdoor antenna(s) for uplink and indoor antenna(s) for downlink frequencies - - this device, including its antenna(s), must be professionally installed as specified in this filing for meeting RF exposure compliance requirements - - device must operate with a maximum duty factor not exceeding ## % to satisfy RF exposure compliance requirements - - the RF exposure label described in this filing must be displayed on all antenna(s) operating with this device - - this device has not been tested and is not approved for use in co-location with other transmitters - - device must operate in the transmitter co-location configurations identified in this filing - - site dependent co-location configurations must be handled in accordance with 1.1307(b)3 The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information within 30 days of the original e-mail date may result in application dismissal pursuant to Section 2.917(c). DO NOT Reply to this email by using the Reply button. In order for your response to be processed expeditiously, you must upload your response via the Internet at www.fcc.gov, E-Filing, OET TCB/Accreditor Electronic Filing, TCB Login, Submit Correspondence. 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 e-mail address listed below the name of the sender.

M/A-COM, Inc. 221 Jefferson Ridge Parkway Lynchburg, VA 24501 Telephone: 434.455.9527 [email protected] August 25, 2004 Mr. Tim Harrington Federal Communications Commission FCC Laboratory Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, Maryland 21046 Ref.: CRN 13125 FCC ID: BV8MBS700A100 731 Confirmation Number: TC827699 Mr. Harrington, With regard to the communication of July 28, 2004 concerning an audit of the referenced FCC ID number, M/A-COM, Inc. believes the Grant of Equipment Authorization notes are adequate and sufficient for this base station filing. Environmental Assessment (EA) is not necessary under the requirements of §1.1307(a). §1.1307(b) identifies those categories for routine environmental evaluation and EA preparation. If not listed in Table 1 of this section, then there is a categorical exemption. Although Private Land Mobile Radio is identified as a service, for both building and non-building mounted antennas the power level of 1,000 watts provides the exclusion as the M/A-COM, Inc. filing is for a 100 watt device (maximum). §1.1307(a)(1) further specifies paragraphs (c) through (e) and they would not apply as the device has not been deployed and remaining system elements are in development. Each base station site implementation may be unique in terms of antenna type, antenna directionality, antenna gain, transmission line losses, co location effects, etc. and these elements are picked at the time of site commissioning. To include MPE EA in the Equipment Authorization Grant notes, is not possible due to site equipment variability. There may be instances where existing infrastructure equipment is to be reused. Other manufactures may do so, if they have a single antenna, etc. but this is not the case for M/A-COM, Inc. TCB training notes of May 2003 indicates that base station site licensing is the appropriate point for EA of a base station and site. M/A-COM, Inc. 221 Jefferson Ridge Parkway Lynchburg, VA 24501 Telephone: 434.455.9527 [email protected] M/A-COM, Inc. has taken this approach through the years and believes it should be applied for this base station Equipment Authorization Grant as well. M/A-COM, Inc. requests the Commission reconsider the findings of the audit and dismiss any further, allowing the Equipment Authorization Grant to remain in effect. Sincerely, Daryl Popowitch Regulatory Manager Engineering Project Manager M/A-COM, Inc. – Lynchburg, VA

M/A-COM, Inc. 221 Jefferson Ridge Parkway Lynchburg, VA 24501 Telephone: 434.455.9527 [email protected] August 25, 2004 Mr. Tim Harrington Federal Communications Commission FCC Laboratory Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, Maryland 21046 Ref.: CRN 13125 FCC ID: BV8MBS700A100 731 Confirmation Number: TC827699 Mr. Harrington, With regard to the communication of July 28, 2004 concerning an audit of the referenced FCC ID number, M/A-COM, Inc. believes the Grant of Equipment Authorization notes are adequate and sufficient for this base station filing. Environmental Assessment (EA) is not necessary under the requirements of §1.1307(a). §1.1307(b) identifies those categories for routine environmental evaluation and EA preparation. If not listed in Table 1 of this section, then there is a categorical exemption. Although Private Land Mobile Radio is identified as a service, for both building and non-building mounted antennas the power level of 1,000 watts provides the exclusion as the M/A-COM, Inc. filing is for a 100 watt device (maximum). §1.1307(a)(1) further specifies paragraphs (c) through (e) and they would not apply as the device has not been deployed and remaining system elements are in development. Each base station site implementation may be unique in terms of antenna type, antenna directionality, antenna gain, transmission line losses, co location effects, etc. and these elements are picked at the time of site commissioning. To include MPE EA in the Equipment Authorization Grant notes, is not possible due to site equipment variability. There may be instances where existing infrastructure equipment is to be reused. Other manufactures may do so, if they have a single antenna, etc. but this is not the case for M/A-COM, Inc. TCB training notes of May 2003 indicates that base station site licensing is the appropriate point for EA of a base station and site. M/A-COM, Inc. 221 Jefferson Ridge Parkway Lynchburg, VA 24501 Telephone: 434.455.9527 [email protected] M/A-COM, Inc. has taken this approach through the years and believes it should be applied for this base station Equipment Authorization Grant as well. M/A-COM, Inc. requests the Commission reconsider the findings of the audit and dismiss any further, allowing the Equipment Authorization Grant to remain in effect. Sincerely, Daryl Popowitch Regulatory Manager Engineering Project Manager M/A-COM, Inc. – Lynchburg, VA

Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 39 of 64 APPENDIX J: EXTERNAL PHOTOGRAPHS PHOTOGRAPH 4: DCX FRONT VIEW Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 40 of 64 PHOTOGRAPH 5: DCX REAR VIEW Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 41 of 64 PHOTOGRAPH 6: HPA FRONT VIEW Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 42 of 64 PHOTOGRAPH 7: HPA REAR VIEW Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 43 of 64 PHOTOGRAPH 8: BSC Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 44 of 64 PHOTOGRAPH 9: BSX

Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 30 of 64 APPENDIX C: LABEL INFORMATION Please refer to the following pages for a label sample and a photograph of the label location. M/A-COM, Inc. MODL: MASK7MDX SER#: 123456789 DEVICE COMPLIES WITH FCC RULE PART 15. OPERATION IS SUBJECT TO THE CONDITION TH AT THIS DEVICE DOES NOT CAUSE HARMFUL INTERFERENCE. FCC ID: BV8MBS700A100 INPUT: -48 VDC IC: Single Phase 530 W MADE IN LYNCHBURG, VA USA 123456 Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 31 of 64 PHOTOGRAPH 1: FCC ID LABEL LOCATION ON BACK OF DCX FCC ID/ LABEL HERE

Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 45 of 64 APPENDIX K: INTERNAL PHOTOGRAPHS PHOTOGRAPH 10: HPA WITHOUT TOP COVER Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 46 of 64 PHOTOGRAPH 11: HPA CONTROLLER WITHOUT COVER Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 47 of 64 PHOTOGRAPH 12: HPA CONTROLLER PCB FRONT VIEW Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 48 of 64 PHOTOGRAPH 13: HPA CONTROLLER PCB REAR VIEW Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 49 of 64 PHOTOGRAPH 14: HPA WITHOUT CONTROLLER Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 50 of 64 PHOTOGRAPH 15: HPA WIHOUT RF COVER Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 51 of 64 PHOTOGRAPH 16: HPA WITH RF DECK REMOVED Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 52 of 64 PHOTOGRAPH 17: HPA UNDERSIDE RF DECK Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 53 of 64 PHOTOGRAPH 18: HPA RF DECK TOP VIEW Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 54 of 64 PHOTOGRAPH 19: HPA RF BOTTOM VIEW Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 55 of 64 PHOTOGRAPH 20: HPA RF AMP Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 56 of 64 PHOTOGRAPH 21: HPA RF AMP (LEFT SIDE) Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 57 of 64 PHOTOGRAPH 22: HPA RF AMP (RIGHT SIDE) Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 58 of 64 PHOTOGRAPH 23: BSC Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 59 of 64 PHOTOGRAPH 24: BSC PCB TOP VIEW Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: June 4, 2004 60 of 64 PHOTOGRAPH 25: BSC PCB BOTTOM VIEW Rhein Tech Laboratories Client: M/A COM, Inc. 360 Herndon Parkway Model: SkyMaster 700 MHz Base Station Suite 1400 Standard: FCC Part 90 Herndon, VA 20170 Report Number: 2004023 http://www.rheintech.com Date: Ju…

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