2AWYH-M2RBMobile Radio

Draft Lock Key Function keys Up/Down switch Mic port Note:The antenna gain is less than 2.15dBi if other antennas are used. Programming/external speaker The antenna installation height is recommended to be 0.5-5M.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates and can radiate radio frequency energy. If not installed and used in accordance with the instructions, it may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. Verification of harmful interference by this equipment to radio or television reception can be determined by turning it off and then on. The user is encouraged to try to correct the interference by one or more of the following measures: - Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver. - Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. - Consult the dealer or an experienced radio/TV technician for help. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This equipments complies with FCC radiation exposure limits set forth for an uncontrolled environment.This equipments shall be installed and operated with minimum distance 148 cm between tha radiator&body. This product is compliance to FCC RF Exposure requirements and refers to FCC website https://apps.fcc.gov/oetcf/eas/reports/GenericSearch.cfm search for FCC ID: 2AWYH-M2RB to gain further information include SAR values. WARNING: MODIFICATION OF THIS DEVICE TO RECEIVE CELLULAR RADIOTELEPHONE SERVICE SIGNALS IS PROHIBIITED UNDER FCC RULES AND FEDERRAL LAW. ■ FCC Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. ■ Licensing Information Use of the radio in Canada/USA is subject to the rules & regulations of IC/FCC. Changes or modifications not expressly approved by our may void the user authority granted by the IC/FCC to operate this radio and should not be made. To comply with IC/FCC requirements, transmitter adjustments should be made only by or under the supervision of a person certified as technically qualified to perform transmitter maintenance and repairs in the private land mobile and fixed services as certified by an organization representative of the user of those services. Replacement of any transmitter component (crystal, semiconductor, etc) not authorized by the IC/FCC equipment authorization for this radio could violate IC/ FCC rules. Note: Use of this radio outside the country where it was intended to be distributed is subject to government regulations and may be prohibited. Important: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this device. Your radio is set up to transmit a regulated signal on an assigned frequency. It is against the law to alter or adjust the settings inside the radio to exceed those limitations. Any adjustments to your radio must be made by qualified technicians. To be safe and sure: • Never open your radio’s case. • Never change or replace anything in your radio except the battery. • Any attempt to change frequencies or output power of the radio invalidates the approval WARNING! It is up to the user to properly operate this radio transmitter to insure safe operation. Please adhere to the following: •Use only the supplied or an approved antenna. Unauthorized antennas, modifications, or attachments could impair call quality, damage the radio, or result in violation of FCC regulations. •Do not use the radio with a damaged antenna. •If a damaged antenna comes into contact with the skin, a minor burn may result. Please contact your local dealer for a replacement antenna.

Rugged Radios 951 E Grand Ave, Arroyo Grande, CA 93420 Jan. 26, 2021 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division Subject: Extended Frequencies Justification for Certification of Transmitter with FCC ID: 2AWYH-M2RB Dear Sir/Madam, This transmitter was designed to operate in following frequency ranges: 136-174MHz To aid equipment authorization in other countries which accept the United States FCC Grant for Certification, Rugged Radios is requesting that the FCC lists the frequencies 136-174MHz, under FCC Rule Parts 90 on the FCC Grant. Rugged Radios attests that the Is two way radio will not be marketed to USA users with the frequency band which is not allowed by the rule part 90. Per the FCC’s KDB634817 guidance, as an alternative to listing the exact frequencies, we acknowledge that it’s a violation of the FCC Rules if this device operates on unauthorized frequencies. Frequency Range (MHz） FCC Rule Part 136-150.8 For Federal 150.8-152.855 FCC Part90&22 152.855-154 FCC Part90 154-156.2475 FCC Part90 157.1875-157.45 FCC Part90 157.45-161.575 FCC Part90&22 161.575-161.625 FCC Part22 161.625-161.775 FCC Part22 161.755-161.9625 FCC Part90 162.0375-173.2 FCC Part90 173.2-173.4 FCC Part90 173.4-174 For Federal Also, equipment programming is the responsibility of Authorized Service Personnel, the Is two way radio complies with 47 CFR Part 90.203(e), in that the operator cannot directly program the transmit frequencies using the normally accessible external controls. Please contact me if you require any additional information. Sincerely Yours, Signature: ____________________ Name: Steve Gonzalez Title: Manager

Rugged Radios 951 E Grand Ave, Arroyo Grande, CA 93420 Justification Letter Date: 2021-02-04 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 FCC ID:2AWYH-M2RB Dear Sir/Madam, We, Rugged Radios, acknowledge that this device will not be marketed to USA users with the frequency band which is not allowed by rule part 90.and it is a violation of FCC rules if this device is operated on unauthorized frequencies inside the U.S.A. This equipment meets the requirements of the FCC Rules, Parts 90.203(e) and (g), as applicable. Programming of this products transmit frequencies can be performed ONLY by the manufacturer or by service or by maintenance personal. The operator can’t program transmit frequencies using the equipment’s external operation controls. This is to certify that the requirements of 47 CFR Part 90.203(j)(4) and (5) spectrum efficiency are met by the Rugged Radios as demonstrated by the tests conducted on the sample radio provided. The tests show that the 4FSK data rate is in accordance with ETSI TS 102 361-1, that is 9600 bits persecond in a 12.5 kHz bandwidth to satisfy the data rate requirement of 4800 bits per second per 6.25 kHz ofchannel bandwidth (7K71F1D emissions). Additionally the Digital Radio uses the AMBE+2 half-ratevocoder to compress 60 ms of normal bursts are sent in alternate 30 ms TDMA slots and so comply with theequivalence of one voice channel per 6.25 kHz bandwidth (7K83F1W emission). Additionally the radio also meetsthe requirement of one voice channel per 12.5kHz of channel bandwidth for analogue speech (11k0F3E emission). Sincerely Yours, Signature: _____________________ Name: Steve Gonzalez Title: Manager

Rugged Radios Agent Authorization Company: Rugged Radios Address: 951 E Grand Ave, Arroyo Grande, California 93420, United States Product Name: Mobile Radio Model Number(s): M1-G, M1 Product Description: Mobile Radio We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2021-01-29 Name: Steve Gonzalez Company: Rugged Radios

Rugged Radios Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2021-01-29 Subject; Request for Confidentiality FCC ID: 2AWYH-M2RB To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely Steve Gonzalez Rugged Radios

External Photos ALL VIEW OF EUT TOP VIEW OF EUT BOTTOM VIEW OF EUT FRONT VIEW OF EUT BACK VIEW OF EUT LEFT VIEW OF EUT RIGHT VIEW OF EUT ANTENNA PORT Hand microphone TOP VIEW OF EUT BOTTOM VIEW OF EUT FRONT VIEW OF EUT BACK VIEW OF EUT LEFT VIEW OF EUT RIGHT VIEW OF EUT

FCC ID Label Location FCC ID: 2AWYH-M2RB

Internal Photos OPEN VIEW-1 OF EUT INTERNAL VIEW-1 OF EUT INTERNAL VIEW-2 OF EUT INTERNAL VIEW-3 OF EUT INTERNAL VIEW-4 OF EUT INTERNAL VIEW-5 OF EUT INTERNAL VIEW-6 OF EUT INTERNAL VIEW-7 OF EUT INTERNAL VIEW-8 OF EUT INTERNAL VIEW-9 OF EUT INTERNAL VIEW-10 OF EUT INTERNAL VIEW-11 OF EUT INTERNAL VIEW-12 OF EUT INTERNAL VIEW-13 OF EUT INTERNAL VIEW-14 OF EUT INTERNAL VIEW-15 OF EUT INTERNAL VIEW-16 OF EUT INTERNAL VIEW-17 OF EUT INTERNAL VIEW-18 OF EUT Hand microphone OPEN VIEW-1 OF EUT INTERNAL VIEW-1 OF EUT INTERNAL VIEW-2 OF EUT

RF EXPOSURE EVALUATION 1. TEST RESULT CERTIFICATION Applicant Rugged Radios Address 951 E Grand Ave, Arroyo Grande, CA 93420 manufacturer Rugged Radios Address 951 E Grand Ave, Arroyo Grande, CA 93420 Factory Rugged Radios Address 951 E Grand Ave, Arroyo Grande, CA 93420 Product Designation: Mobile Radio Brand Name: Rugged Radios Test Model: M1-G, Series Model M1 Difference Description M1-G supports GPS, M1 without GPS FCC ID: 2AWYH-M2RB Date of Test: Dec. 28, 2020~Jan. 25, 2021 2. TECHNICAL INFORMATION A major technical description of EUT is described as following: Operation Frequency From 136MHz to 174MHz--VHF Modulation FM/4FSK Antenna Designation Detachable Antenna type External antenna Output power 5W/25W/55W Antenna gain 0dBi Power Supply DC 13.8V Channel List: Operation mode Channel Separation Operation Frequency Range Test channel Test Frequency Analog/ Digital 12.5 kHz 136-174MHz Bottom 136.025 MHz 12.5 kHz 136-174MHz Middle 151.850 MHz 12.5 kHz 136-174MHz Middle 155.025 MHz 12.5 kHz 136-174MHz Middle 161.610 MHz 12.5 kHz 136-174MHz Top 173.975 MHz 3. RF EXPOSURE MEASUREMENT 3.1 INTRODUCTION Human exposure to RF emissions from mobile devices (47 CFR §2.1091) may be evaluated based on the MPE limits adopted by the FCC for electric and magnetic field strength and/or power density, as appropriate, since exposures are assumed to occur at distances of 20 cm or more from persons. The 1992 ANSI/IEEE standard (See Listed limit table) specifies a minimum separation distance of 20 cm for performing reliable field measurements to determine adherence to MPE limits. If the minimum separation distance between a transmitter and nearby persons is more than 20 cm under normal operating conditions, compliance with MPE limits may be determined at such distance from the transmitter. When applicable, operation instructions and prominent warning labels may be used to alert the exposed persons to maintain a specified distance from the transmitter or to limit their exposure durations and usage conditions to ensure compliance. 3.2 FCC LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) LIMITS FOR GENERAL POPULATION / UNCONTROLLED EXPOSURE Frequency Range (MHz) E-field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Time |E| 2 , |H| 2 or S (Minutes) 0.3 -- 1.34 614 1.63 (100)* 30 1.34 -- 30 824/f 2.19/f (180/f 2 )* 30 30 -- 300 27.5 0.073 0.2 30 300 -- 1500 -- -- f/1500 30 1500 -- 100,000 -- -- 1.0 30 *Note: 1. f= Frequency in MHz * Plane-wave Equivalent Power Density 2.The averaging time for General Population/Uncontrolled exposure to fixed transmitters is not applicable for mobile and portable transmitters. See 47 CFR §§2.1091 and 2.1093 on source-based time-averaging requirement for mobile and portable transmitters. 4. CLASSIFICATION OF THE ASSESSMENT METHODS According to user manual, The antenna of the product, under normal use condition is at least 148 cm away from the body of the user. Warning statement to the user for keeping at least 148 cm separation distance and the prohibition of operating to a person has been printed on the user’s manual. So, this product under normal use is located on electromagnetic far field between the human body. S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna 5. EUT OPERATION CONDITION Make the EUT to transmit at Bottom/Middle/Top channel. 6. TEST RESULTS Note: report the worst result in this part Antenna Gain=0dBi (Numeric 1.0), π=3.141, Duty cycle=50% Frequency Tune-up Tolerance Max tune-up Max tune-up Power Density Power Density Limit Result MHz dBm dBm mW mW/cm 2 mW/ cm 2 Pass/Fail 151.850 46.8±0.6 47.4 55000 0.199853303 0.2 Pass Note: 1. The output power is refer to AGC02931201208FE10. 2. According to the user manual, the minimum separate distance which used for MPE calculate is 148cm.

Report No.: AGC02931200702FE10 Page 1 of 76 FCC Test Report Report No.: AGC02931201208FE10 FCC ID : 2AWYH-M2RB PRODUCT DESIGNATION : Mobile Radio BRAND NAME : Rugged Radios MODEL NAME : M1-G, M1 APPLICANT : Rugged Radios DATE OF ISSUE : Jan. 25, 2021 STANDARD(S) : FCC Part 90 Rules FCC Part 22 Rules REPORT VERSION : V 1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC02931200702FE10 Page 2 of 76 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Jan. 25, 2021 Valid Initial Release Report No.: AGC02931200702FE10 Page 3 of 76 TABLE OF CONTENTS 1. GENERAL INFORMATION ......................................................................................................................... 5 2.PRODUCT INFORMATION ............................................................................................................................. 6 2.1 PRODUCT TECHNICAL DESCRIPTION .............................................................................................. 6 2.2 TEST FREQUENCY LIST ..................................................................................................................... 7 2.3 RELATED SUBMITTAL(S) / GRANT (S) ............................................................................................... 8 2.4 TEST METHODOLOGY ........................................................................................................................ 8 2.5 CALCULATION OF EMISSION INDICATORS ...................................................................................... 8 2.6 SPECIAL ACCESSORIES .................................................................................................................... 9 2.7 EQUIPMENT MODIFICATIONS ............................................................................................................ 9 3. TEST ENVIRONMENT ................................................................................................................................. 10 3.1 ADDRESS OF THE TEST LABORATORY .......................................................................................... 10 3.2 TEST FACILITY ................................................................................................................................... 10 3.3 ENVIRONMENTAL CONDITIONS ....................................................................................................... 11 3.4 MEASUREMENT UNCERTAINTY ....................................................................................................... 11 3.5 LIST OF EQUIPMENTS USED ........................................................................................................... 12 4.SYSTEM TEST CONFIGURATION .............................................................................................................. 13 4.1 EUT CONFIGURATION ...................................................................................................................... 13 4.2 EUT EXERCISE .................................................................................................................................. 13 4.3 CONFIGURATION OF TESTED SYSTEM .......................................................................................... 13 4.4 EQUIPMENT USED IN TESTED SYSTEM ......................................................................................... 13 4.5 SUMMARY OF TEST RESULTS ......................................................................................................... 14 5.DESCRIPTION OF TEST MODES ................................................................................................................ 15 6.FREQUENCY TOLERANCE ......................................................................................................................... 16 6.1 PROVISIONS APPLICABLE ............................................................................................................... 16 6.2 MEASUREMENT PROCEDURE......................................................................................................... 16 6.3 MEASUREMENT SETUP ................................................................................................................... 16 6.4 MEASUREMENT RESULTS ............................................................................................................... 17 7. EMISSION BANDWIDTH ............................................................................................................................. 20 7.1 PROVISIONS APPLICABLE ............................................................................................................... 20 7.2 MEASUREMENT PROCEDURE......................................................................................................... 20 7.3 MEASUREMENT SETUP ................................................................................................................... 20 7.4 MEASUREMENT RESULTS ............................................................................................................... 21 8. SPURIOUS RATIATED EMISSION ............................................................................................................... 29 8.1 PROVISIONS APPLICABLE ............................................................................................................... 29 8.2 MEASUREMENT PROCEDURE......................................................................................................... 29 Report No.: AGC02931200702FE10 Page 4 of 76 8.3 MEASUREMENT SETUP ................................................................................................................... 30 8.4 MEASUREMENT RESULTS ............................................................................................................... 31 8.5 EMISSION MASK PLOT ..................................................................................................................... 37 9.MODULATION CHA…

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Report No.: AGC02931200702FE10 Page 27 of 76 12.5kHz, 4FSK Modulation:151.850MHz-25W 12.5kHz, 4FSK Modulation:155.025MHz-25W 12.5kHz, 4FSK Modulation:161.610MHz-25W 12.5kHz, 4FSK Modulation:173.975MHz-25W 12.5kHz, 4FSK Modulation:136.250MHz-55W 12.5kHz, 4FSK Modulation:151.850MHz-55W Report No.: AGC02931200702FE10 Page 28 of 76 12.5kHz, 4FSK Modulation:155.025MHz-55W 12.5kHz, 4FSK Modulation:161.610MHz-55W 12.5kHz, 4FSK Modulation:173.975MHz-55W Report No.: AGC02931200702FE10 Page 29 of 76 8. SPURIOUS RATIATED EMISSION 8.1 PROVISIONS APPLICABLE According to FCC §2.1053 §22.359 and §90.210, the power of each unwanted emission shall be less than Transmitted Power as specified below for transmitters designed to operate with each channel separation. Emission Mask D -for 12.5 kHz Channel Separation: (1) On any frequency removed from the center of the authorized bandwidth fo to 5.625 kHz removed from fo: Zero dB. (2) On any frequency removed from the center of the authorized bandwidth by a displacement Frequency (fd in kHz) fo of more than 5.625 kHz but no more than 12.5 kHz: At least 7.27(fd-2.88 kHz) dB (3) On any frequency removed from the center of the authorized bandwidth by a displacement Frequency (fd in kHz)fo of more than 12.5 kHz: At least 50+10 log(P) dB or 70 dB, whichever is lesser attenuation. According to FCC §22.359: (a) Out of band emissions. The power of any emission outside of the authorized operating frequency ranges must be attenuated below the transmitting power (P) by a factor of at least 43 + 10 log (P) dB. 8.2 MEASUREMENT PROCEDURE (1) On a test site, the EUT shall be placed on a turntable, and in the position closest to the normal use as declared by the user. (2) The test antenna shall be oriented initially for vertical polarization located 3m from the EUT to correspond to the transmitter. (3) The output of the antenna shall be connected to the measuring receiver and either a peak or quasi-peak detector was used for the measurement as indicated on the report. The detector selection is based on how close the emission level was approaching the limit. (4) The transmitter shall be switched on; if possible, without the modulation and the measurement receiver shall be tuned to the frequency of the transmitter under test. (5) The test antenna shall be raised and lowered through the specified range of height until the measuring receiver detects a maximum signal level. (6) The transmitter shall than be rotated through 360°in the horizontal plane, until the maximum signal level is detected by the measuring receiver. (7) The test antenna shall be raised and lowered again through the specified range of height until the measuring receiver detects a maximum signal level. (8) The maximum signal level detected by the measuring receiver shall be noted. (9) The measurement shall be repeated with the test antenna set to horizontal polarization. (10) Replace the antenna with a proper Antenna (substitution antenna). (11) The substitution antenna shall be oriented for vertical polarization and, if necessary, the length of the substitution antenna shall be adjusted to correspond to the frequency of transmitting. (12) The substitution antenna shall be connected to a calibrated signal generator. (13) If necessary, the input attenuator setting of the measuring receiver shall be adjusted in order to increase the sensitivity of the measuring receiver. (14) The test antenna shall be raised and lowered through the specified range of the height to ensure that the maximum signal is received. (15) The input signal to substitution antenna shall be adjusted to the level that produces a level detected by the measuring receiver, that is equal to the level noted while the transmitter radiated power was measured, corrected for the change of input attenuation setting of the measuring receiver. (16) The input level to the substitution antenna shall be recorded as power level in dBm, corrected for any change of input attenuator setting of the measuring receiver. (17) The measurement shall be repeated with the test antenna and the substitution antenna oriented for horizontal polarization. Report No.: AGC02931200702FE10 Page 30 of 76 8.3 MEASUREMENT SETUP RADIATED BELOW1GHZ RADIATED ABOVE 1 GHZ Report No.: AGC02931200702FE10 Page 31 of 76 8.4 MEASUREMENT RESULTS The RF output of the EUT was connected to a spectrum analyzer through appropriate attenuation. The resolution bandwidth of the spectrum analyzer was set at 100 kHz for below 1GHz, and 1MHz for above 1GHz. Sufficient scans were taken to show any out of band emissions up to 10 harmonic. In the semi-anechoic chamber, setup as illustrated above the DUT placed on the 0.8m height of Turn Table, rotated the table 45 degree each interval to search the maximum radiation power and receiver antenna shall be rotated vertical and horizontal polarization and moved height from 1m to 4m to find the maximum polar radiated power for each degree interval. The “Read Value” is the spectrum reading of maximum power value. The substitution antenna is substituted for DUT at the same position and signals generator (S.G) export the CW signal to the substitution antenna via a TX cable. The receiver antenna shall be rotated vertical and horizontal polarization and moved height from 1m to 4m to find the maximum radiation power. Record the power level of maximum radiation power from spectrum. So, the Measured substitution value = Ref level of S.G + TX cables loss – Substituted Antenna Gain. EIRP = “Read Value” + Measured substitution value + 2.15. Test limit calculation: Preliminary calculation Final Result At least 50+10 log (P) =50+10log (5) =56.99 (dB) Limit=P- Preliminary calculation=36.99-56.99=-20 dBm At least 50+10 log (P) =50+10log (25) =63.98 (dB) Limit=P- Preliminary calculation=43.98-63.98=-20 dBm At least 50+10 log (P) =50+10log (55) =67.40 (dB) Limit=P- Preliminary calculation=47.40-67.40=-20 dBm At least 43+10 log (P) =43+10log (5) =49.99 (dB) Limit=P- Preliminary calc…

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Report No.: AGC02931201208FE10 Page 40 of 76 Emission Mask [email protected] Emission Mask [email protected] Emission Mask [email protected] Emission Mask [email protected] Emission Mask [email protected] Emission Mask [email protected] Report No.: AGC02931201208FE10 Page 41 of 76 Emission Mask [email protected] Emission Mask [email protected] Emission Mask [email protected] Emission Mask [email protected] Emission Mask [email protected] Emission Mask [email protected] Report No.: AGC02931201208FE10 Page 42 of 76 Emission Mask [email protected] Emission Mask [email protected] Emission Mask [email protected] Emission Mask [email protected] Emission Mask [email protected] Emission Mask [email protected] Report No.: AGC02931201208FE10 Page 43 of 76 Mask § [email protected] Mask § [email protected] Mask § [email protected] Mask § [email protected] Mask § [email protected] Mask § [email protected] Report No.: AGC02931201208FE10 Page 44 of 76 Mask § [email protected] Mask § [email protected] Mask § [email protected] Mask § [email protected] Mask § [email protected] Mask § [email protected] Report No.: AGC02931201208FE10 Page 45 of 76 9.MODULATION CHARACTERISTICS 9.1 PROVISIONS APPLICABLE According to FCC§2.1047 and §90.207, for Voice Modulation Communication Equipment, the frequency response of the audio modulation circuit over a range of 100 to 5000Hz shall be measured. 9.2 MEASUREMENT METHOD 9.2.1 Modulation Limit (1). Configure the EUT as shown in figure 1, adjust the audio input for 60% of rated system deviation at 1kHz using this level as a reference (0dB) and vary the input level from –20 to +20dB. Record the frequency deviation obtained as a function of the input level. (2). Repeat step 1 with input frequency changing to 300, 1000, 1500 and 3000Hz in sequence. 9.2.2 Audio Frequency Response (1). Configure the EUT as shown in figure 1. (2). Adjust the audio input for 20% of rated system deviation at 1 kHz using this level as a reference (0 dB). (3). Vary the Audio frequency from 100 Hz to 10 kHz and record the frequency deviation. (4). Audio Frequency Response = 20log10 (Deviation of test frequency/Deviation of 1 kHz reference). 9.3 MEASUREMENT SETUP Report No.: AGC02931201208FE10 Page 46 of 76 9.4 MEASUREMENT RESULTS (A). MODULATION LIMIT: 12.5kHz, Analog modulation, Assigned Frequency:136.025MHz-55W Modulation Level (dB) Peak Freq. Deviation At 300 Hz (kHz) Peak Freq. Deviation At 1000 Hz (kHz) Peak Freq. Deviation At 1500 Hz (kHz) Peak Freq. Deviation At 3000 Hz (kHz) -20 0.17 0.44 0.69 0.83 -15 0.35 0.53 0.77 0.92 -10 0.42 0.71 1.12 1.23 -5 0.51 0.99 1.22 1.41 0 0.69 1.05 1.45 1.63 +5 0.77 1.15 1.39 1.71 +10 0.83 1.26 1.42 1.8 +15 1.15 1.31 1.69 1.84 +20 1.12 1.29 1.58 1.79 Note: All the modes had been tested, but only the worst data recorded in the report. Report No.: AGC02931201208FE10 Page 47 of 76 (B). AUDIO FREQUENCY RESPONSE: Note: All the modes had been tested, but only the worst data recorded in the report. 12.5kHz, Analog modulation, Assigned Frequency:136.025MHz-5…

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