Test Report

FCC ID: 2ATSN-ROCKY1

Test Report

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FCCID_4406966

FCC PART 95 MEASUREMENT AND TEST REPORT For LedgeTech LLC 1091 E Bayaud Ave, Unit W2609 Denver, Colorado, USA, Zip Code 80209 FCC ID: 2ATSN-ROCKY1 Report Type: Product Type: Original Report FRS ANALOG RADIO Report Number: RXM190625054 -00B Report Date: 2019-07-31 Jerry Zhang Reviewed By: EMC Manager Test Laboratory: Bay Area Compliance Laboratories Corp. (Dongguan) No.69 Pulongcun, Puxinhu Industry Area, Tangxia, Dongguan, Guangdong, China Tel: +86-769-86858888 Fax: +86-769-86858891 www.baclcorp.com.cn Note: This test report is prepared for the customer shown above and for the device described herein. It may not be duplicated or used in part without prior written consent from Bay Area Compliance Laboratories Corp. (Dongguan). This report must not be used by the customer to claim product certification, approval, or endorsement by A2LA* or any agency of the Federal Government. * This report may contain data that are not covered by the A2LA accreditation and are marked with an asterisk “*”.

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B TABLE OF CONTENTS GENERAL INFORMATION .......................................................................................................................................3 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ....................................................................................3 OBJECTIVE ...................................................................................................................................................................3 RELATED SUBMITTAL(S)/GRANT(S) .............................................................................................................................3 TEST METHODOLOGY ..................................................................................................................................................3 MEASUREMENT UNCERTAINTY ....................................................................................................................................4 TEST FACILITY .............................................................................................................................................................4 SYSTEM TEST CONFIGURATION ..........................................................................................................................5 DESCRIPTION OF TEST CONFIGURATION ......................................................................................................................5 EQUIPMENT MODIFICATIONS .......................................................................................................................................5 EUT EXERCISE SOFTWARE ..........................................................................................................................................5 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................6 SUMMARY OF TEST RESULTS ...............................................................................................................................7 FCC §2.1093 - RF EXPOSURE INFORMATION .....................................................................................................8 APPLICABLE STANDARD ..............................................................................................................................................8 TEST RESULT ...............................................................................................................................................................8 FCC §2.1046, §95.567 - RF OUTPUT POWER ..........................................................................................................9 APPLICABLE STANDARD ..............................................................................................................................................9 TEST PROCEDURE ........................................................................................................................................................9 TEST EQUIPMENT LIST AND DETAILS ...........................................................................................................................9 TEST DATA ..................................................................................................................................................................9 FCC §2.1047 & §95.575 - MODULATION CHARACTERISTIC ..........................................................................11 APPLICABLE STANDARD ............................................................................................................................................11 TEST EQUIPMENT LIST AND DETAILS .........................................................................................................................11 TEST PROCEDURE ......................................................................................................................................................11 TEST DATA ................................................................................................................................................................11 FCC §2.1049,§95.573, §95.579 - AUTHOURIZED BANDWIDTH AND EMISSION MASK .............................15 APPLICABLE STANDARD ............................................................................................................................................15 TEST PROCEDURE ......................................................................................................................................................15 TEST EQUIPMENT LIST AND DETAILS .........................................................................................................................15 TEST DATA ................................................................................................................................................................16 FCC §2.1053 & §95.579 - RADIATED SPURIOUS EMISSION ............................................................................19 APPLICABLE STANDARD ............................................................................................................................................19 TEST PROCEDURE ......................................................................................................................................................19 TEST EQUIPMENT LIST AND DETAILS .........................................................................................................................19 TEST DATA ................................................................................................................................................................20 FCC§2.1055 (d), §95.565- FREQUENCY STABILITY ...........................................................................................22 APPLICABLE STANDARD ............................................................................................................................................22 TEST PROCEDURE ......................................................................................................................................................22 TEST EQUIPMENT LIST AND DETAILS .........................................................................................................................22 TEST DATA ................................................................................................................................................................23 Page 2 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B GENERAL INFORMATION Product Description for Equipment Under Test (EUT) EUT Name: FRS ANALOG RADIO EUT Model: Rocky Talkie 462.5500-462.7250MHz; Operation Frequency: 467.5625-467.7125MHz Modulation Mode: FM Channel Spacing: 12.5kHz Emission Designator: 11K0F3E Maximum Output Power: 462.5500-462.7250MHz: 28.68 dBm (ERP) 467.5625-467.7125MHz: 21.63 dBm Model: SK0IG-420050U Adapter Input: 100-240Vac Information Output: DC 4.2V 0.5A Rated Input Voltage: DC3.7V from battery and DC 4.2V from adapter External Dimension: 179mm(L)*61mm(W)*30mm(H) Serial Number: 190625054 EUT Received Date: 2019-6-28 Objective This report is prepared on behalf of Applicant in accordance with Part 2 and Part 95, Subpart A and B of the Federal Communication Commissions rules. Related Submittal(s)/Grant(s) No related submittal(s). Test Methodology All tests and measurements indicated in this document were performed in accordance with Part 95 Subpart A and Subpart B of the Federal Communication Commissions rules with TIA-603-D, Land Mobile FM or PM-Communications Equipment-Measurement and Performance Standards. All emissions measurement was performed and Bay Area Compliance Laboratories Corp. (Dongguan). Page 3 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B Measurement Uncertainty Parameter Measurement Uncertainty Occupied Channel Bandwidth ±5 % RF output power, conducted ±0.61dB 30MHz～1GHz:5.85 dB Unwanted Emissions, radiated 1G~26.5GHz: 5.23 dB Unwanted Emissions, conducted ±1.5 dB Temperature ±1℃ Humidity ±5% DC and low frequency voltages ±0.4% Duty Cycle 1% Test Facility The Test site used by Bay Area Compliance Laboratories Corp. (Dongguan) to collect test data is located on the No.69 Pulongcun, Puxinhu Industry Area, Tangxia, Dongguan, Guangdong, China. The lab has been recognized as the FCC accredited lab under the KDB 974614 D01 and is listed in the FCC Public Access Link (PAL) database, FCC Registration No. : 897218, the FCC Designation No. : CN1220. The lab has been recognized by Innovation, Science and Economic Development Canada to test to Canadian radio equipment requirements, the CAB identifier : CN0022. Page 4 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B SYSTEM TEST CONFIGURATION Description of Test Configuration The system was configured for testing in a typical fashion (as normally used by a typical user). The device uses total 22 FRS channels as below: Frequency Frequency Channel No. Channel No. (MHz) (MHz) 1 462.5625 12 467.6625 2 462.5875 13 467.6875 3 462.6125 14 467.7125 4 462.6375 15 462.5500 5 462.6625 16 462.5750 6 462.6875 17 462.6000 7 462.7125 18 462.6250 8 467.5625 19 462.6500 9 467.5875 20 462.6750 10 467.6125 21 462.7000 11 467.6375 22 462.7250 Equipment Modifications No modification was made to the EUT tested. EUT Exercise Software No software was used during test. Page 5 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B Block Diagram of Test Setup 1.0 Meter EUT Non-conductive Table 150 cm above Ground Plane 1.5 Meters Page 6 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B SUMMARY OF TEST RESULTS FCC Rules Description of Test Results §2.1093 RF Exposure Compliance §2.1046, §95.567 RF Output Power Compliance §2.1047, §95.575 Modulation Characteristic Compliance §2.1049, §95.573, §95.579 Authorized Bandwidth & Emission Mask Compliance §2.1053, §95.579 Spurious Radiated Emissions Compliance §2.1055(d), §95.565 Frequency Stability Compliance Page 7 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B FCC §2.1093 - RF EXPOSURE INFORMATION Applicable Standard According to FCC §2.1093 and §1.1307(b) (1), systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guideline. Test Result Please refer to SAR Report Number: RXM190625054-20. Page 8 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B FCC §2.1046, §95.567 - RF OUTPUT POWER Applicable Standard Acorrding to FCC §95.567 Each FRS transmitter type must be designed such that the effective radiated power (ERP) on channels 8 through 14 does not exceed 0.5 Watts and the ERP on channels 1 through 7 and 15 through 22 does not exceed 2.0 Watts. Test Procedure The transmitter was placed on a wooden turntable, and it was transmitting into a non-radiating load, which was also placed on the turntable. The measurement antenna was placed at a distance of 3 meters from the EUT. During the tests, the antenna height and polarization as well as EUT azimuth were varied in order to identify the maximum level of emissions from the EUT .The test was performed by placing the EUT on 3-orthogonal axis. Remove the EUT and replace it with substitution antenna. A signal generator was connected to the substitution antenna by a non-radiating cable. The absolute levels of the emissions were measured by the substitution. Test Equipment List and Details Serial Calibration Calibration Manufacturer Description Model Number Date Due Date EMI Test R&S ESR3 102453 2019-06-26 2020-06-26 Receiver Sunol Sciences Antenna JB3 A060611-1 2017-11-10 2020-11-10 Adjustable Dipole EMCO 3121C 9109-753 N/A N/A Antenna Unknown Coaxial Cable C-NJNJ-50 C-0400-01 2018-09-05 2019-09-05 Unknown Coaxial Cable C-NJNJ-50 C-0075-01 2018-09-05 2019-09-05 Unknown Coaxial Cable C-NJNJ-50 C-1400-01 2019-05-06 2020-05-06 Agilent Signal Generator E8247C MY43321350 2018-12-10 2019-12-10 * Statement of Traceability: Bay Area Compliance Laboratories Corp. (Dongguan) attests that all calibrations have been performed, traceable to National Primary Standards and International System of Units (SI). Test Data Environmental Conditions Temperature: 24oC Relative Humidity: 52% ATM Pressure: 100.1kPa Test by: Tyler Pan Test Date: 2019-06-29 Page 9 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B Test Mode: Transmitting ERP: Substituted Method Receiver Absolute Frequency Polar Substituted Antenna Limit Margin Reading Cable Loss Level (MHz) (H/V) Level Gain (dBm) (dB) (dBµV) (dB) (dBm) (dBm) (dBd) Frequency:462.6375MHz 462.6375 H 96.82 15.49 0.00 0.67 14.82 33.00 18.18 462.6375 V 107.73 29.35 0.00 0.67 28.68 33.00 4.32 Frequency:467.6375MHz 467.6375 H 92.06 10.86 0.00 0.68 10.18 27.00 16.82 467.6375 V 100.54 22.31 0.00 0.68 21.63 27.00 5.37 Test Result: Compliance. Page 10 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B FCC §2.1047 & §95.575 - MODULATION CHARACTERISTIC Applicable Standard Per FCC §2.1047 and §95.575: Each FRS transmitter type must be designed such that the peak frequency deviation does not exceed 2.5 kHz, and the highest audio frequency contributing substantially to modulation must not exceed 3.125 kHz. Test Equipment List and Details Calibration Calibration Manufacturer Description Model No. Serial No. Date Due Date RF Communications HP 8920A 00 235 2018-07-11 2019-07-11 Test Set UNI-T Multimeter UT39A M130199938 2018-07-24 2019-07-24 Unknown Coaxial Cable C-SJ00-0010 C0010/01 Each time N/A Weinschel Coaxial Attenuators 53-20-34 LN749 Each time N/A * Statement of Traceability: Bay Area Compliance Laboratories Corp. (Dongguan) attests that all calibrations have been performed, traceable to National Primary Standards and International System of Units (SI). Test Procedure Test Method: TIA/EIA-603-D Test Data Environmental Conditions Temperature: 28.2C Relative Humidity: 43% ATM Pressure: 100.6 kPa Test by: Blake Yang Test Date: 2019-07-04 Please refer to the following tables and plots. Test Mode: Transmitting Page 11 of 23

Bay Area Compliance Laboratories Corp. (Dongguan} Report No.: RXM 190625054 —00B MODULATION LIMITING Carrier Frequency: 462.6375 MHz Instantancous Steady—state AutioFrequny mm| Dovedon Dotatm Deiaim Detim [kHz] [kHz] [kHz] [kHz] [ 300 0.949 0.157 0.905 0.109 25 400 1238 0.195 1.201 0.090 25 500 1638 0.198 1.588 0.125 25 600 2.077 0.204 2.012 0.138 25 700 2.006 0.228 2.016 0.173 25 800 2.127 0.219 2040 0.190 25 900 2.101 0.254 2.032 0.192 25 1000 2.115 0.258 2.042 0.217 25 1200 2.089 0.259 2.022 0.224 25 1400 2100 0.292 2024 0.279 25 1600 2.102 0.332 2.035 0.270 25 1800 2.122 0.387 2.028 0.310 25 2000 2.082 0.409 2.063 0.333 25 2200 2.108 0.420 2.065 0.344 25 2400 2.090 0.405 2.049 0.343 25 2600 2.092 0.443 2.047 0.357 25 2800 2.137 0.469 2.074 0.393 25 3000 2.105 0.467 2.054 0.399 25 Modulation Limiting 3.0 20 _ fln l4 % 10 E E e _—__{L_—————— an ————F 300 600 Eud "200 180c 1800 2100 2400 2700 300 Audio Frequency {EHz) —— Instantancous Deviation (@+20dB)[ kHz] —— Instantancous Deviation (@—20dB) [ kBHz] —— Steady—state Devistion (@+204B) [kHz] —— Steady—state Devistion (@—20dB) [ kHz] ——Limit Page 12 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 —008B Audio Frequency Response Carrier Frequency: 462.6375 MHz Audio Frequency (Hz) Response Attenuation (dB) 300 —11.91 400 —8.97 500 —6.70 600 4.91 700 3.62 800 237 900 —L.05 1000 9.00 L17 2.60 434 420 5.32 5.60 6.38 6.94 7.17 733 4.55 Audlo Frequency Response 120 70 N Z_ RESPONSE ATTENUATION (dB) B 8 \ $ N & 8 20 SiC tx0 200 4100 Audlo Frequency (Hz) ——Audia frecuency response ——uplimt —— towlimit Page 13 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 —008B Audio Low Pass Filter Response Carrier Frequency: 462.6375 MHz Audio Response Frequency Attenuation dB 26 9.8 —14.8 —24.7 369 —54.6 472. —85.2 —85.7 —85.6 —84.9 Audio Low pass filter response 8 8 B & : & 6 8 8 8 RESPONSE ATTENUATION (dB) 10 100 1008 Audio Frequency (kHz) Page 14 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B FCC §2.1049,§95.573, §95.579 - AUTHOURIZED BANDWIDTH AND EMISSION MASK Applicable Standard According to §95.573 Each FRS transmitter type must be designed such that the occupied bandwidth does not exceed 12.5 kHz. According to §95.579 Each FRS transmitter type must be designed to satisfy the applicable unwanted emissions limits in this paragraph. (a) Attenuation requirements. The power of unwanted emissions must be attenuated below the carrier power output in Watts (P) by at least: (1) 25 dB (decibels) in the frequency band 6.25 kHz to 12.5 kHz removed from the channel center frequency. (2) 35 dB in the frequency band 12.5 kHz to 31.25 kHz removed from the channel center frequency. (3) 43 + 10 log (P) dB in any frequency band removed from the channel center frequency by more than 31.25 kHz. Test Procedure TIA-603-D, section 2.2.11 Test Equipment List and Details Calibration Calibration Manufacturer Description Model No. Serial No. Date Due Date Rohde & Schwarz Signal Analyzer FSIQ26 831929/005 2018-08-03 2019-08-03 C-SJ00- Unknown Coaxial Cable C0010/01 Each time N/A 0010 Weinschel Coaxial Attenuators 53-20-34 LN749 Each time N/A * Statement of Traceability: Bay Area Compliance Laboratories Corp. (Dongguan) attests that all calibrations have been performed, traceable to National Primary Standards and International System of Units (SI). Page 15 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B Test Data Environmental Conditions Temperature: 28.2C Relative Humidity: 43% ATM Pressure: 100.6 kPa Test by: Blake Yang Test Date: 2019-07-04 Test Mode: Transmitting 99% Occupied fc Limit Bandwidth (MHz) (kHz) (kHz) 462.6375 10.020 12.50 467.6375 10.020 12.50 Note: Emission bandwidth was based on calculation method instead of measurement. Emission Designator Per CFR 47 §2.201& §2.202, BW = 2M + 2D For FM Mode (Channel Spacing: 12.5 kHz) Emission Designator 11K0F3E In this case, the maximum modulating frequency is 3.0 kHz with a 2.5 kHz deviation. BW = 2(M+D) = 2*(3.0 kHz + 2.5 kHz) = 11 kHz = 11K0 F3E portion of the designator represents an FM voice transmission Therefore, the entire designator for 12.5 kHz channel spacing FM mode is 11K0F3E. Page 16 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B 462.6375 MHz Page 17 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B 467.6375 MHz Page 18 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B FCC §2.1053 & §95.579 - RADIATED SPURIOUS EMISSION Applicable Standard FCC §2.1053 and §95.579 Test Procedure The transmitter was placed on a wooden turntable, and it was transmitting into a non-radiating load, which was also placed on the turntable. The measurement antenna was placed at a distance of 3 meters from the EUT. During the tests, the antenna height and polarization as well as EUT azimuth were varied in order to identify the maximum level of emissions from the EUT .The test was performed by placing the EUT on 3-orthogonal axis. The frequency range up to tenth harmonic of the fundamental frequency was investigated. Remove the EUT and replace it with substitution antenna. A signal generator was connected to the substitution antenna by a non-radiating cable. The absolute levels of the spurious emissions were measured by the substitution. Spurious emissions in dB =10 1g (TXpwr in Watts/0.001)-the absolute level Spurious attenuation limit in dB = 43+10 Log10 (power out in Watts) Test Equipment List and Details Serial Calibration Calibration Manufacturer Description Model Number Date Due Date EMI Test R&S ESR3 102453 2019-06-26 2020-06-26 Receiver Sunol Sciences Antenna JB3 A060611-1 2017-11-10 2020-11-10 Adjustable Dipole EMCO 3121C 9109-753 N/A N/A Antenna Unknown Coaxial Cable C-NJNJ-50 C-0400-01 2018-09-05 2019-09-05 Unknown Coaxial Cable C-NJNJ-50 C-0075-01 2018-09-05 2019-09-05 Unknown Coaxial Cable C-NJNJ-50 C-1400-01 2018-09-05 2019-09-05 HP Amplifier 8447D 2727A05902 2018-09-05 2019-09-05 Spectrum Agilent E4440A SG43360054 2019-01-04 2020-01-04 Analyzer TDK RF Horn Antenna HRN-0118 130 084 2018-10-12 2021-10-12 ETS-Lindgren Horn Antenna 3115 000 527 35 2018-10-12 2021-10-12 Unknown Coaxial Cable C-SJSJ-50 C-0800-01 2018-09-05 2019-09-05 Unknown Coaxial Cable C-NJNJ-50 C-0200-02 2018-09-05 2019-09-05 AFS42-00101800- MITEQ Amplifier 2001271 2018-09-05 2019-09-05 25-S-42 Agilent Signal Generator E8247C MY43321350 2018-12-10 2019-12-10 * Statement of Traceability: Bay Area Compliance Laboratories Corp. (Dongguan) attests that all calibrations have been performed, traceable to National Primary Standards and International System of Units (SI). Page 19 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B Test Data Environmental Conditions Radiated emissions Radiated emissions Test Items: below 1GHz above 1GHz Temperature: 24oC 25oC Relative 52% 53% Humidity: ATM Pressure: 100.1kPa 100.1kPa Test by: Tyler Pan Neil Liao Test Date: 2019-06-29 2019-07-07 Test Mode: Transmitting 30MHz-5GHz: Substituted Method Absolute Receiver Limit Margin Frequency Polar Reading Substituted Antenna (MHz) (H/V) Cable Loss Level (dBµV) Level Gain (dBm) (dB) (dB) (dBm) (dBm) (dBd/dBi) FM, frequency:462.6375MHz 925.2750 H 48.55 -53.39 0.00 0.97 -54.36 -13.00 41.36 925.2750 V 45.63 -58.26 0.00 0.97 -59.23 -13.00 46.23 1387.91 H 60.20 -53.05 8.92 1.20 -45.33 -13.00 32.33 1387.91 V 59.74 -54.14 8.92 1.20 -46.42 -13.00 33.42 1850.55 H 61.60 -51.94 11.45 0.85 -41.34 -13.00 28.34 1850.55 V 55.87 -58.12 11.45 0.85 -47.52 -13.00 34.52 2313.19 H 61.81 -50.44 11.35 1.24 -40.33 -13.00 27.33 2313.19 V 59.22 -52.97 11.35 1.24 -42.86 -13.00 29.86 2775.83 H 69.09 -43.13 13.10 1.33 -31.36 -13.00 18.36 2775.83 V 61.30 -51.10 13.10 1.33 -39.33 -13.00 26.33 3238.46 H 64.69 -45.46 13.60 1.58 -33.44 -13.00 20.44 3238.46 V 57.81 -52.38 13.60 1.58 -40.36 -13.00 27.36 3701.10 H 64.51 -44.58 14.00 1.83 -32.41 -13.00 19.41 3701.10 V 58.89 -50.18 14.00 1.83 -38.01 -13.00 25.01 Page 20 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B Substituted Method Absolute Receiver Limit Margin Frequency Polar Reading Substituted Antenna (MHz) (H/V) Cable Loss Level (dBµV) Level Gain (dBm) (dB) (dB) (dBm) (dBm) (dBd/dBi) FM, frequency:467.6375MHz 935.2750 H 57.67 -38.00 0.00 0.94 -38.94 -13.00 25.94 935.2750 V 50.70 -46.73 0.00 0.94 -47.67 -13.00 34.67 1402.91 H 61.38 -51.88 9.01 1.20 -44.07 -13.00 31.07 1402.91 V 59.52 -54.32 9.01 1.20 -46.51 -13.00 33.51 1870.55 H 56.99 -56.21 11.59 0.92 -45.54 -13.00 32.54 1870.55 V 54.18 -59.41 11.59 0.92 -48.74 -13.00 35.74 2338.1875 H 62.39 -49.96 11.62 1.25 -39.59 -13.00 26.59 2338.1875 V 60.76 -51.61 11.62 1.25 -41.24 -13.00 28.24 2805.83 H 65.26 -46.92 13.15 1.36 -35.13 -13.00 22.13 2805.83 V 59.82 -52.56 13.15 1.36 -40.77 -13.00 27.77 3273.46 H 59.74 -50.78 13.60 1.58 -38.76 -13.00 25.76 3273.46 V 54.67 -55.87 13.60 1.58 -43.85 -13.00 30.85 3741.10 H 53.30 -55.59 13.84 1.69 -43.44 -13.00 30.44 3741.10 V 50.69 -58.11 13.84 1.69 -45.96 -13.00 32.96 Page 21 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B FCC§2.1055 (d), §95.565- FREQUENCY STABILITY Applicable Standard According to FCC §2.1055(a) (1), The frequency stability shall be measured with variation of ambient temperature from –30 ºC to +50 ºC, and according to FCC 2.1055(d) (2), the frequency stability shall be measured with reducing primary supply voltage to the battery operating end point which is specified by the manufacturer. According to FCC §95.565 Each FRS transmitter type must be designed such that the carrier frequencies remain within ± 2.5 parts- per-million of the channel center frequencies specified in § 95.563 during normal operating conditions. Test Procedure Frequency Stability vs. Temperature: The equipment under test was connected to an external DC power supply and the RF output was connected to a Frequency Counter via feed-through attenuators. The EUT was placed inside the temperature chamber. The DC leads and RF output cable exited the chamber through an opening made for the purpose. After the temperature stabilized for approximately 20 minutes, the frequency output was recorded from the Frequency Counter. Frequency Stability vs. Voltage: 1)Vary primary supply voltage from 85 to 115 percent of the nominal value for other than hand carried battery equipment. (2) For hand carried, battery powered equipment, reduce primary supply voltage to the battery operating end point which shall be specified by the manufacturer. The output frequency was recorded for each voltage. Test Equipment List and Details Calibration Calibration Manufacturer Description Model No. Serial No. Date Due Date RF Communications HP 8920A 00 235 2018-07-11 2019-07-11 Test Set Unknown Coaxial Cable C-SJ00-0010 C0010/01 Each time / E-Microwave Blocking Control EMDCB-00036 0E01201047 Each time / Weinschel Coaxial Attenuators 53-20-34 LN749 Each time / Constant ESPEC temperature and ESX-4CA 018 463 2019-03-26 2020-03-26 humidity Tester UNI-T Multimeter UT39A M130199938 2018-07-24 2019-07-24 Pro instrument DC Power Supply pps3300 3300012 N/A N/A * Statement of Traceability: Bay Area Compliance Laboratories Corp. (Dongguan) attests that all calibrations have been performed, traceable to National Primary Standards and International System of Units (SI). Page 22 of 23

Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RXM190625054 -00B Test Data Environmental Conditions Temperature: 28.2C Relative Humidity: 43% ATM Pressure: 100.6 kPa Test by: Blake Yang Test Date: 2019-07-04 Test Mode: Transmitting Reference Frequency: 462.6375 MHz Temperature Voltage Reading Frequency Error Limit ℃ Vdc MHz ppm ppm -30 462.63738015 -0.26 -20 462.63738183 -0.26 -10 462.63736554 -0.29 0 462.63740410 -0.21 10 3.7 462.63733211 -0.36 20 462.63735972 -0.30 2.5 30 462.63739963 -0.22 40 462.63735319 -0.32 50 462.63736319 -0.30 20 3.5 462.63740858 -0.20 20 4.2 462.63732531 -0.38 Reference Frequency: 467.6375 MHz Temperature Voltage Reading Frequency Error Limit ℃ Vdc MHz ppm ppm -30 467.63738521 -0.25 -20 467.63735064 -0.32 -10 467.63734150 -0.34 0 467.63737015 -0.28 10 3.7 467.63736634 -0.29 20 467.63735972 -0.30 2.5 30 467.63739751 -0.22 40 467.63737594 -0.27 50 467.63733234 -0.36 20 3.5 467.63738740 -0.24 20 4.2 467.63738725 -0.24 Note: The extreme voltage was declared by applicant. ***** END OF REPORT ***** Page 23 of 23


Document Created: 2019-08-21 20:37:45
Document Modified: 2019-08-21 20:37:45
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