BV8P801TP801T VOICE TERMINAL RADIO

OpenSky Digital Radio Portable Radio Model P-801T Users Manual P-801T User’s Manual 1 CHAPTER 1 Welcome to the OpenSky Network Chapter 1 Safety Notices 3 Notices to the User and Safety Training Information 3 Occupational Safety Guidelines and Safety Training Information 5 OpenSky Overview 7 Internet Protocol (IP) Network 7 Integrated Voice and Data 8 Digitized Voice, Text and Graphics 8 Multi-Agency Coverage 10 Promotes Interagency Cooperation 10 Connectivity with Legacy Equipment 11 Improved Coverage and Signal Strength 11 Better Peak-Time Performance 12 Software-Configured Device 12 Software Upgradeable 13 Welcome to the OpenSky Network—CHAPTER 1 P-801T User’s Manual 3 Safety Notices IMPORTANT INFORMATION ON SAFE AND OPTIMAL OPERATION. READ THIS BEFORE USING YOUR P-801T PORTABLE RADIO. Notices to the User and Safety Training Information WARNING Your P-801T radio generates RF electromagnetic energy during transmit mode. This radio is designed for and classified as “Occupational Use Only” meaning it must be used only during the course of employment by individuals aware of the hazards and the ways to minimize such hazards. This radio is NOT intended for use by the “General Population” in an uncontrolled environment. The OpenSky P-801T portable radio has been tested and complies with the FCC RF exposure limits for “Occupational Use Only.” In addition, your P-801T radio complies with the following Standards and Guidelines with regard to RF energy and electromagnetic energy levels and evaluation of such levels for exposure to humans: • FCC OET Bulletin 65 Edition 97-01 Supplement C, Evaluating Compliance with FCC Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields. • American National Standards Institute (C95.1– 1992), IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3kHz to 300 GHz. This equipment generates or uses radio frequency energy. Changes or modifications to this equipment may cause harmful interference unless the modifications are expressly approved in the instruction manual. The user could lose the authority to operate this equipment if an unauthorized change or modification is made. CHAPTER 1—Advanced Radio Operations 4 P-801T User’s Manual This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. Government law prohibits the operation of unlicensed transmitters within the territories under government control. Illegal operation is punishable by fine or imprisonment or both. Refer service to qualified technicians only. Do not operate your transceiver in explosive atmospheres (gases, dust, fumes, etc.). This equipment generates and uses radio frequency energy and may cause harmful interference to radio communications if not installed and used in accordance with the instructions. However, there is no guarantee that the interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, the user is encouraged to try to correct the interference by one or more of the following measures: • Re-orient or relocate the receiving antenna. • Increase the separation between the equipment and the receiver. • Consult a service center for technical assistance. Welcome to the OpenSky Network—CHAPTER 1 P-801T User’s Manual 5 Occupational Safety Guidelines and Safety Training Information CAUTION. To ensure that your exposure to RF electromagnetic energy is within the FCC allowable limits for occupational use, always adhere to the guidelines below. Your P-801T portable radio may transmits using the integral antenna. When the radio is ON, it receives and also sends out radio frequency (RF) signals. In 1996, the Federal Communications Commission (FCC) adopted RF exposure guidelines with safety limits for portable devices, based on the recommended limits of the National Council on Radiation Protection and Measurements (NCRP) and the American National Safety Institute (ANSI). The design of the P-801T Portable Radio complies with the FCC guidelines for Occupational / Controlled exposure to RF electromagnetic fields, as measured by the specific absorption rate (SAR). To assure optimal performance and make sure human exposure to RF electromagnetic energy is within the FCC guidelines, always adhere to the following: 1. Do not hold the radio less than 1 inch from your body, especially your face, ears, or eyes, while transmitting. 2. When using the radio, angle the antenna away from your body and do not allow the antenna to touch your body during transmission. 3. The push-to-talk button should only be depressed when intending to send a voice message. 4. The radio should only be used for necessary work related communications. 5. The radio should only be used by authorized and trained personnel and should not be operated by children. 6. Do not operate your radio or replace/charge batteries in explosive atmospheres (gases, dust, fumes, etc.) or near explosive basking caps. Your radio should be turned off when installing and removing batteries. CHAPTER 1—Advanced Radio Operations 6 P-801T User’s Manual 7. Do not attempt any unauthorized modification to the radio. Changes or modifications to the radio may cause harmful interference. Service of the radio should only be performed by qualified personnel. 8. Always use M/A-COM authorized accessories (antennas, batteries, belt clips, speakers/mic, etc.). Use of unauthorized accessories can cause the FCC RF exposure compliance requirements to be exceeded. The information listed above provides the user with the information needed to make him or her aware of a RF exposure, and what to do to assure that this radio operates within the FCC exposure limits of this radio. Welcome to the OpenSky Network—CHAPTER 1 P-801T User’s Manual 7 Ope…

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January 9, 2002 Federal Communicatio ns Co mmission Washington, DC 20554 Subject:M/A-COM Submission for FCC Certification/Type Acceptance Reference:M/A-COM’s OpenSky ® P-801T Portable Transceiver To Whom It May Concern: M/A-COM, Inc. hereby requests that certain sections, exhibits and the like, to our attached submission be treated by the FCC as confidential information. The sections that require confidentiality is for the most part all of the Section entitled Block Diagrams and Schematics and includes the following technical information: • Detailed Theory of Operation • Any and all Block Diagrams and explanatory text • Processing Kernel Schematic, Drawing No. HE01030 • Transceiver Schematic, Drawing No. HE01032 • High Power Amplifier Schematic, Drawing No. HE01031 The above technical information w hich is explicitly characterized in our submission, describes in detail how our product is built and its theory of operation. This level of technical information, if disclosed outside the FCC, would cause irreparable harm to M/A-COM from a competitive standpoint. Therefore, we respectfully request that the technical information listed herein and fully described in our submission attached hereto be treated as confidential information and not be disclosed outside of the FCC. Sincerely, Noreen Kealey Contracts Administrator Enclosures

SAR COMPLIANCE TESTING OF M/A-COM MODEL P-801T PORTABLE PUSH-TO-TALK RADIO FINAL TECHNICAL REPORT October 24, 2000 Submitted to: Mr. A. E. (Andy) Moysenko Manager, Technology Programs M/A-Com, Inc. 1011 Pawtucket Blvd. Lowell, MA 01853-3295 Submitted by: Om P. Gandhi Professor of Electrical Engineering University of Utah 2 50 S Central Campus Dr., Rm. 3280 Salt Lake City, UT 84112-9206 i SAR COMPLIANCE TESTING OF M/A-COM MODEL P-801T PORTABLE PUSH-TO-TALK RADIO Summary A widely-accepted finite-difference time-domain (FDTD) computational technique has been used for a heterogeneous, anatomically-based model of the human to determine maximum peak 1-g specific absorption rates (SAR) for four typical configurations of M/A-Com Model P-801T Portable Push-to-Talk Radio for two midband frequencies of the transmission bands. The FDTD-calculated gains of the two antennas of -0.1 and -3.2 dBi compare extremely well with gains of 0 and -3.0 dBi measured for these antennas. The maximum 1-g SARs for the four considered configurations of the radio for the analog (100% duty cycle mode) vary from 1.53 to 7.02 W/kg with the highest SAR when the "microphone" is mounted on the lapel at the shoulder. The SAR values are less than the FCC occupational limit of 8.0 W/kg for any 1-g of tissue. For a vast majority of situations, the radio will be used in the TDMA mode with 50% duty cycle. Under these conditions, the maximum 1-g SARs would be one-half of the above values and would vary from 0.77 to 3.51 W/kg for the four configurations, respectively. 1 SAR COMPLIANCE TESTING OF M/A-COM MODEL P-801T PORTABLE PUSH-TO-TALK RADIO I. Introduction The U.S. Federal Communications Commission (FCC) has adopted limits of human exposure to RF emissions from mobile and portable devices that are regulated by the FCC [1]. The FCC has also issued Supplement C (Edition 97-01) to OET Bulletin 65 defining both the measurement and the computational procedures that should be followed for evaluating compliance of mobile and portable devices with FCC limits for human exposure to radiofrequency emissions [2]. The partial-body SAR limits prescribed by the FCC are 8.0 W/kg for occupational/controlled exposures and 1.6 W/kg for general population/uncontrolled exposures. The maximum partial-body SAR is to be obtained by averaging over any 1 g of tissue defined as a tissue volume in the shape of a cube [1, 2]. The M/A-Com Model P-801T Two-Way Portable Radio FCC ID#BV8P-801T can radiate up to a maximum power of 3 W over the frequency bands 806-824 MHz and 851-870 MHz. According to the manufacturer, the equipment is to be sold exclusively to public safety/public service agencies and not to the general public. Training will be required on use of this equipment prior to issue to users. SAR compliance testing is thus required for the peak 1-g SAR of 8.0 W/kg for occupational/controlled exposures [1, 2]. According to FCC 96-326 [1], "use of appropriate numerical and computational techniques, such as FDTD analysis, is acceptable for demonstrating compliance with the SAR values. Studies by O. P. Gandhi and others indicate that such techniques offer valid means to determine energy absorption characteristics in exposed subjects." For SAR compliance testing of the M/A-Com Model P-801T Portable Radio, we have used the widely accepted FDTD method for the anatomically-based model of the human body [3, 4]. Some reasons for selecting the numerical method, rather than the experimental phantom model, are as follows: 1. The experimental phantom models of the face or the human waist, two of the locations where the two-way radio is held in operation are not readily available. 2. Anatomically-based models have the advantage of modeling the curved shapes as well as the heterogeneities of the tissues. 2 3. Flat phantom models may be used. But, as given in Table 4, these models tend to grossly overestimate the SARs because of lack of curvature such as for the face and the body. Using the numerical method results in putting some of the tissues at realistic distances which are generally greater than those for a flat phantom model (see Figs. 3, 6, 9, 10 for visualization of the Radio P-801T vis à vis the human model). 4. Some individuals have alluded to leakage electromagnetic fields from the electronic components in the handset. There is, however, no proof for this allegation. In fact, as given in [5], the experimentally-determined SARs for 10 experimental wireless handsets five each at 835 and 1900 MHz were within ± 20 percent (± 1 dB) of those determined from the FDTD computational method. This slight difference of ± 1 dB may well be due to the fact that the numerical method uses a 15 tissue heterogeneous anatomic model of the head and neck while the experimental phantom uses a relatively thin shell with a homogeneous liquid in it. 5. Lastly, the manufacturer uses a well-shielded chassis of the handset thus minimizing any leakage radiation from the internal electronic components. This is described in detail in Section II. II. The M/A-Com Model P-801T Portable Push-to-Talk Radio A photograph of the M/A-Com Model P-801T Radio is given in Fig. 1. As aforementioned, the radio transmits in the frequency band 806-824 MHz and 851-870 MHz with a maximum ERP of three watts or 34.8 dBm. The approximate dimensions of the radio are as follows: width 2.3", depth 1.5" and height 6.1". As seen in Fig. 1, a sleeve type, nominal half wave dipole antenna is mounted in the back right-hand corner at the top of the die cast aluminum chassis in rugged polycarbonate housing of the handset. The sleeve type antenna has the following dimensions: Diameter of unshielded wire (for the upper part of the antenna) = 1.7 mm Diameter of the rubber sheathing around the antenna = 0.22" (5.6 mm) Unshielded length of the antenna = 159 mm Length of the metallic shielding sleeve (at the base of the antenna) = 16 mm Diameter of the shielding sleeve = 0.75" (19.05 mm) Thickness of the rubber sheathing around…

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Fig. 1. Photograph of the M/A-Com Model P-801T Two-Way Radio. Fig. 2. A cross sectional diagram of the M/A-Com Model P-801T Radio showing shielding. Fig. 3. The M/A-Com Portable Radio P-801T with "half-wave" antenna in front of the mouth. Fig. 4. The M/A-Com Portable Radio P-801T in belt mount holster. Fig. 5. Detail of belt clip showing spacing and metallic swivel. Fig. 6. The M/A-Com Portable Radio P-801T with "half-wave" antenna belt mounted at the waist on the back side.

1 Table 1. Dielectric properties of the various tissues assumed for the model of the human body [7]. Tissue Mass Density 10 3 kg/m 3 815.0 MHz860.5 MHz ε r ε r σ S/m σ S/m Muscle Fat Bone (cancellous) Cartilage Skin Nerve Intestine Spleen Heart Blood Liver Kidney Lung (inflated) CSF Eye humor Sclera Lens Stomach Pancreas, paratid gland Brain, pineal gland, pituitary gland 1.04 0.92 1.85 1.10 1.01 1.04 1.04 1.05 1.03 1.06 1.03 1.05 0.35 1.01 1.01 1.17 1.10 1.05 1.05 1.03 56.17 11.37 16.75 42.97 44.17 32.81 60.11 57.75 60.49 61.65 47.26 59.41 22.17 68.83 68.92 55.51 41.37 65.31 59.89 46.18 0.94 0.10 0.23 0.74 0.83 0.55 2.12 1.23 1.19 1.50 0.82 1.34 0.44 2.38 1.61 1.14 0.62 1.15 1.01 0.74 56.05 11.35 16.68 42.80 43.93 32.65 59.76 57.43 60.16 61.48 47.02 59.00 22.08 68.73 68.91 55.38 41.28 65.18 59.77 45.97 0.96 0.11 0.23 0.76 0.84 0.56 2.14 1.25 1.21 1.52 0.84 1.37 0.45 2.40 1.62 1.15 0.63 1.17 1.02 0.75 Configuration 1Configuration 2Configuration 3Configuration 4 Radio with “1/2 wave” antenna held at 1 inch in front of the mouth (See Fig. 3) Microphone with “1/4 wave” antenna clipped to the lapel at shoulder (See Fig. 10) Radio with “1/2 wave” antenna in a holster mounted at back side of waist (See Fig. 6) Microphone with “1/4 wave” antenna held at 1 inch in front of the mouth (See Fig. 9) Resolution (mm) Human model (cells) FDTD dimensions (cells) Memory requirement Calculation periods 1.974 x 1.974 x 2 101 x 113 x 127 121 x 160 x 196 268 MB 8 2.961 x 2.961 x 3 116 x 98 x 265 130 x 135 x 280 272 MB 8 1.974 x 1.974 x 2 101 x 113 x 127 121 x 160 x 196 268 MB 10 2.961 x 2.961 x 3 120 x 127 x 167 140 x 147 x 187 347 MB 15 Table 2. Model size and computing requirements for SAR calculations for M/A-Com P-801T Portable Radio. 2 Table 3. Models used to represent the P-801T Radio and the microphone. Handset Handset Dimensions P-801T Radio With “1/2 wave” Antenna 2.3′′ × 1.5′′ × 6.1′′ 2.25′′ × 1′′ × 2.5′′ Microphone With “1/4 wave” Antenna (28 + 1 + 1) x (18 + 1 + 1)x (76 + 1 + 1) (18 + 1 + 1) x (11 + 1 + 1) x (50 + 1 + 1) 19.05, 16 mm 6 x 6 x 8 4 x 4 x 5 1.7, 159 mm 1, 80 1, 53 (27 + 1 + 1) x (11 + 1 + 1)x (30 + 1 + 1) (18 + 1 + 1) x (7 + 1 + 1) x (19 + 1 + 1) 19.05, 16 mm 6 x 6 x 8 4 x 4 x 5 1.7, 69 mm 1, 35 1, 23 Sleeve, diameter, height No. of voxels (1.974 x 1.974 x 2 mm models) No. of voxels (2.961 x 2.961 x 3 mm models) Antenna, diameter, height No. of voxels (1.974 x 1.974 x 2 mm models) No. of voxels (2.961 x 2.961 x 3 mm models) No. of voxels for 1.974 x 1.974 x 2 mm models (Configurations 1, 3) No. of voxels for 2.961 x 2.961 x 3 mm models (Configurations 2, 4) * * Sleeve Antenna Wire (Unshielded Region) 1 + 1 cells along each of the directions are taken because of the need to represent plastic covering of the handsets. Both the sleeve and the antenna are also assumed to be covered with 1 cell on each of the sides to represent rubber sheathing . (ε = 4) r * ** ** ** 3 Handheld Radio with “1/2 wave” antenna held at 2 inches from the face to the antenna (see Fig. 3a, b) For a Flat Phantom Radio with “1/2 wave” antenna belt-mounted at waist against the back left side with a distance of 1 inch due to thickness of holster (see Fig. 6a, b) Handheld, “Microphone” with “1/4 wave” antenna held at 2 inches from the face to the antenna (see Fig. 9a, b) For a Flat Phantom “Microphone” with “1/4 wave” antenna mounted on lapel at the shoulder for a distance of 11 mm from the body (due to thickness of the clip and the clothing (see Figs. 10a, b) 1 2 3 4 1.53 3.53 5.09 3.42 7.44 7.02 0.27 --- 0 1.22 --- 0.10 0.27 --- 0 1.30 --- 0 ConfigurationDescription BodyLeft EyeRight Eye Max 1-g SAR (W/kg) 1.55 --- 5.15 3.39 --- 6.98 0.25 --- 0 1.17 --- 0.11 0.26 --- 0 1.28 --- 0 BodyLeft EyeRight Eye Max 1-g SAR (W/kg) 815 MHz860.5 MHz Table 4. The calculated maximum 1-g SARs for the body (face in Configurations 1 and 3) and the left and right eyes for four configurations of the M/A-Com Model P-801T Portable Radio radiating 3W at 815 or 860.5 MHz in the analog (100% duty cycle mode). * * All of the SARs would be reduced by a factor of 2 for the TDMA (50% duty cycle) mode used in the vast majority of cases.

Page 1 of 1 File:BV8P801T RF Exposure Notes.doc / 1/11/02AEM / X 4762 BV8P801T RF Exposure Notes: All external attributes of the BV8P801T (case, antennas, accessories, and output power) are identical to the BV8P-801T (Grant Date 1/5/01, amended 2/9/01). Only internal details (circuit board layout and assembly) are different, as reflected in the accompanying files SAR Fig 2 Update A.pdf and SAR Fig 2 Update B.pdf. Therefore, the October 24, 2000 Final Technical Report on SAR Compliance testing on the P-801T Portable Push-to-Talk Radio prepared by Dr. Om P. Gandhi is provided, with the previously noted updates, in this submission in accord with the requirements of CFR 47 Section 2.1093.

SAR Warning Label SAR Warning Label Location SAR Warning Label FCC ID Label

RESPONSE TO CORRESPONDENCE 22086 1. The circuit board layout changes occur within a fully shielded container which is described in the radio case shielding section on page 3 of the SAR Compliance Testing Report (see below). As a consequence, no change to the SAR should be expected. (Excerpt from SAR Compliance Report) Radio Case Shielding A cross sectional diagram of the P-801T handset showing the shielding is attached as Fig. 2. The high-power amplifier (HPA) is enclosed in a 0.008" thick aluminum shield. The minimum shielding effectiveness occurs at the lowest frequency, 806 MHz. At this frequency, the shield attenuates the energy 8.7 dB for each 0.000118 inch of aluminum thickness. Therefore, the theoretical HPA shield effectiveness is over 500 dB. Taking into account shield discontinuities, the minimum expected shield attenuation is 40 dB. Therefore, the signal level leaking out of the HPA shield will not exceed -3.5 dBm or less than one- half milliwatt.. The HPA driving circuitry is on the bottom of the transceiver board (as shown in Fig. 2). Above the transceiver, it sees the PK groundplane (0.0007 inches of copper thickness) plus two additional groundplanes in the transceiver board for a total thickness of 0.0021" of copper. The maximum drive level to the HPA is +17 dBm when the drive amplifier is saturated. The groundplanes will also give about 40 dB isolation due to discontinuities. Therefore, the leakage signal due to the HPA drive circuitry will be -23 dBm. Below the HPA and HPA drive circuitry is a solid aluminum chassis, which provides complete shielding. Therefore, the maximum signal leakage will be out of the top of the radio (as shown in Fig. 2) and to the extent discussed above, as a worst case. The two configurations tested for the P-801T Portable Radio of Fig. 1 are as follows: Configuration 1. The model P-801T Radio with "1/2 wave" antenna held at 1" in front of the mouth. A visualization of this configuration in front of the Utah anatomic model of the head is given in Fig. 3. Configuration 2. The radio with "1/2 wave" antenna in a holster for belt mounting at waist against say, the back left side of the body. A photograph of the holster for belt mounting the equipment is shown in Fig. 4. Figure 5 gives dimensions of the holster, indicating minimum separation of the back of the equipment from the user's garments. Figure 5 also provides a detail of the metal swivel that is part of the holster. A visualization of this configuration as against the Utah anatomic model of the body is given in Fig. 6. As seen in Fig. 5, there is a belt clip metallic component of square dimensions 1.5" × 1.5" and thickness 1.25". This metallic clip of detailed shape given in Fig. 5b was modeled by voxels of dimensions 2.961 × 2.961 × 3 mm for a complete geometry that is visualized in Fig. 6.

Page 1 of 1 M/A-COM Response to CRN 22278: We believe that the FCC's fundamental concern with M/A-COM's RF Exposure submission lies in our assertion that RF leakage from components within the equipment case is a negligible contribution to the SAR. We base this belief upon the issues raised in CRN 22086 as well as the subject correspondence. We understand that this is a critical element of the numerical analyses in our submission and offer the following discussion to remedy this concern. As this discussion incorporates detailed engineering drawings, we request that those items marked proprietary be kept confidential. RF shielding is major consideration in handheld radio design for both safety and operational considerations. The close proximity of RF and digital assemblies within the BV8P801T (see Figures 1 and 2) requires careful attention to RF shielding design to ensure proper equipment operation. This is accomplished with continuous copper ground planes within Printed Circuit Boards (PCB's) as well as individual 0.008-in thick aluminum shields. The use of these measures in combination with a solid aluminum chassis reduces the RF leakage from the equipment housing to negligible levels. Figure 1 - BV8P801T Exploded Assembly Sketch Aluminum Chassis HPA Board Control Head Transceiver Board PK Board Keypad & Display Page 2 of 2 M/A-COM Response to CRN 22278 (continued): The High Power Amplifier (HPA), shown in Figure 3, is enclosed by a 0.008-in thick aluminum shield, also shown in the figure. Evaluating this shield requires recognizing that the minimum attenuation occurs at the lowest end of the operating frequency (806 MHz) and shield discontinuities will further limit the shielding effectiveness. The theoretical attenuation of the shield at 806 MHz is > 500 dB. Taking into account shield discontinuities, the minimum expected attenuation is 40 dB, corresponding to a maximum RF leakage of < -3.5 dBm (< 0.5 mW). The HPA drive circuitry is located on the lower side of the Transceiver Board (see Figure 2). The maximum drive level from this circuitry to the HPA is + 17 dBm when the amplifier is in saturation. Two 0.0015-inch thick copper ground planes within the Transceiver board provide RF shielding to minimize leakage from this circuitry (see Figures 4 and 5). The attenuation of the total 0.030-inch of copper ground plane is approximately 40 dB, making RF leakage from the HPA drive circuitry negligible. Figure 2 -BV8P801T Cross-Section Sketch HPA Shield HPA Shield (Installed) Figure 3 - HPA Board & Shield Page 3 of 3 M/A-COM Response to CRN 22278 (continued): Figure 4 - Transceiver Board Fabrication Drawing - Cross-Section PROPRIETARY Page 4 of 4 M/A-COM Response to CRN 22278 (continued): The upper side of the Transceiver board contains receiver circuitry which generates negligible RF power. One RF shield is installed over the receiver Local Oscillators in this circuitry (see Figure 5). Figure 5 - Transceiver Board Artwork for Groundplanes PROPRIETARY S H I E L D Figure 6 - Transceiver Board with Shield Installed Page 5 of 5 M/A-COM Response to CRN 22278 (continued): The PK Board (see Figure 6) located above the Transceiver also incorporates a ground plane (0.0007-inch copper) and an aluminum shield. This shielding further limits RF leakage from circuitry located below it. The BV8P801T assembly includes a solid aluminum chassis which provides complete shielding of RF leakage from the bottom of the radio. Figure 7 shows a cut-away of a BV8P801T that clearly demonstrates the total shielded enclosure of the RF circuitry within the equipment. Figure 8 provides a close-up view of the HPA Board mounting where the HPA Shield, the aluminum chassis and the Transceiver board with its imbedded ground planes provide multiple layers of shielding of the HPA. Figure 6 - PK Board PK Board Shield Ground Plane Ground Plane Figure 6a - Transceiver Side Figure 6b - Keypad Side Figure 7 - BV8P801T Cross-Section Photograph (Keypad and PK Board Removed) HPA Shield Aluminum Chassis Transceiver Board Transceiver Shield Page 6 of 6 M/A-COM Response to CRN 22278 (continued): In summary, all circuitry carrying high RF currents within the BV8P801T is enclosed by substantial shielding. The following table summarizes the major elements of this shielding: RF Circuitry Major Shielding Elements HPA (HPA Board) • 0.008-inch Aluminum shield • Aluminum chassis (5 sides) • (2) X 0.0015-inch Copper Ground Planes (Transceiver Board) HPA Drive Circuitry (Transceiver Board) • Aluminum chassis (5 sides) • (2) X 0.0015-inch Copper Ground Planes (Transceiver Board) • 0.0007-inch Copper Ground Plane (PK Board) • 0.008-inch Aluminum Shield (PK Board) Based upon a conservative evaluation of the RF attenuation of these shielding structures the maximum RF power leaking out of the BV8P801T case will not exceed 0.5 mW To eliminate the possibility of an unforeseen source of RF leakage, we evaluated the field strength at the carrier frequency of a BV8P801T at Parker-Chomerics, our EMI/EMC test house. Measurements were made at a distance of 3 meters from the equipment while it was transmitting at full power into a 50-ohm load. We calculated the highest power into an isotropic radiator that could produce the maximum measured field strength of 0.042 V/m as 0.52 mW. Because the power radiated as leakage fields are non-isotropic, this result overestimates the actual RF leakage power. Even at an overstated level, the indicated leakage power is more than 1000 times less than the power radiated by antenna. Details of the measurement and calculations are provided in Appendix 1. In addition to the preceding discussion, we provide a summary of the RF shielding considerations for the BV8P-801T, a previous model of this equipment, in Appendix 2 for reference. This equipment received an FCC Equipment Authorization Grant in 2001. HPA Shield Aluminum Chassis Transceiver Board Figure 8 - BV8P801T Close-up Cross-Section Photograph - HPA Board Shielding Page 7 of…

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TEST SERVICES EMC EVALUATION OF THE M/A-COM OPENSKY PORTABLE RADIO MODEL P-801T IN ACCORDANCE WITH THE FCC PART 90 CERTIFICATION Prepared For:M/A-COM 1011 PAWTUCKET BOULEVARD POST OFFICE BOX 3295 LOWELL, MASSACHUSETTS 01854 ATTENTION: ROMAN MAKAREWICZ Prepared By:RONALD H. CROOKER, N.C.E. CHOMERICS TEST SERVICES 77 DRAGON COURT WOBURN, MASSACHUSETTS 01888 Date:JANUARY 18, 2002 Test Report Number:EMI3243.US.02 Test Technician or Engineer: CTS Approved Signatory: This report shall not be reproduced except in full without the written approval of Chomerics Test Services. TEST SERVICES Document #: EMI3243.US.02 Date: January 18, 2002 Page 2 of 49 TABLE OF CONTENTS 1.0General 1.1Introduction 1.1.1Purpose 1.1.2Requirements 1.2Test Summary 1.2.1Summary of Recommendations 1.3Administrative Data 1.3.1Test Facility 1.3.2Equipment Calibration 1.3.3Test Personnel 1.4Test Set-up 1.4.1Test Site Matrix 1.4.2Test Site Descriptions 1.4.3Equipment Under Test 2.0Tests Performed 2.1Occupied Bandwidth 2.1.1Equipment Used 2.1.2Test Conditions 2.1.3Test Method 2.1.4Results 2.2Emission Mask and Spurious Emissions at Antenna Terminals 2.2.1Equipment Used 2.2.2Test Conditions 2.2.3Test Method 2.2.4Results 2.3Frequency Stability 2.3.1Equipment Used 2.3.2Test Conditions 2.3.3Test Method 2.3.4Results 2.4Radiated Emissions 2.4.1Equipment Used 2.4.2Test Conditions 2.4.3Test Method 2.4.4Results Appendix A: Test Log and Test Data Appendix B: Set-Up Photographs TEST SERVICES Document #: EMI3243.US.02 Date: January 18, 2002 Page 3 of 49 LIST OF DEFINITIONS/ABBREVIATIONS ACAlternating Current BBBroadband BWBandwidth cmCentimeter C.P.U.Calibrate Prior to Use dBDecibel DCDirect Current EMCElectromagnetic Compatibility EMIElectromagnetic Interference ERElectric Radiation EUTEquipment Under Test GHzGigahertz HzHertz I-faceInterface kHzKilohertz mMeter MHzMegahertz mmMillimeter mSMillisecond mVMillivolt MRMagnetic Radiation NBNarrowband N.C.R.No Calibration Required PLCPower Line Conduction PPSPulses Per Second uFMicrofarad uHMicrohenry uSMicrosecond uVMicrovolt U.W.C.Use With Calibrated Equipment TEST SERVICES Document #: EMI3243.US.02 Date: January 18, 2002 Page 4 of 49 1.0GENERAL 1.1Introduction 1.1.1Purpose The purpose of this report is to document the performance of the M/A-Com OpenSky P-801T Portable Radio during a variety of radio-performance tests and record the test requirements and procedures used. At…

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