2AKLX-28297Digital wireless handheld microphone transmitter

Test Laboratory: TUV Inc. Date: 2025/11/10 #30_470MHz-608MHz_200KG2E_HandHeld side_0mm_Freq607.900 MHz DUT: Astral HH Communication System: Microphone; Frequency: 607.9 MHz; Duty Cycle: 1:1 Medium: HSL600_251110 Medium parameters used: f = 608 MHz; σ = 0.848 S/m; ε r = 43.951; ρ = 1000 kg/m 3 Ambient Temperature：23.6 °C; Liquid Temperature：22.5 °C DASY Configuration: Electronics: DAE4 Sn855; Calibrated: 2025/4/23 Probe: EX3DV4 - SN3804; ConvF(8.95, 8.95, 8.95) @ 607.9 MHz; Calibrated: 2025/9/24 Sensor-Surface: 1.4mm (Mechanical Surface Detection), z = -39.0, 31.0 Phantom: ELI V5.0 (20deg probe tilt); Type: QD OVA 002 AA; Serial: 1153 DASY52 52.10.4(1535); SEMCAD X 14.6.14(7501) Area Scan (15x8x1): Measurement grid: dx=15mm, dy=15mm Maximum value of SAR (measured) = 0.0857 W/kg Zoom Scan (5x5x7)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 7.505 V/m; Power Drift = -0.05 dB Peak SAR (extrapolated) = 0.211 W/kg SAR(1 g) = 0.084 W/kg; SAR(10 g) = 0.047 W/kg Maximum value of SAR (measured) = 0.159 W/kg 0 dB = 0.159 W/kg = -7.99 dBW/kg Appendix B - SAR Measurement Test Laboratory: TUV Inc. Date: 2025/11/7 #01_902MHz-928MHz_200KG2E_HandHeld side_0mm_Freq902.400 MHz DUT: Astral HH Communication System: Microphone; Frequency: 902.4 MHz; Duty Cycle: 1:1 Medium: HSL900_251107 Medium parameters used: f = 902.4 MHz; σ = 0.966 S/m; ε r = 42.813; ρ = 1000 kg/m 3 Ambient Temperature：23.5 °C; Liquid Temperature：22.1 °C DASY Configuration: Electronics: DAE4 Sn855; Calibrated: 2025/4/23 Probe: EX3DV4 - SN7400; ConvF(9.33, 8.33, 9.64) @ 902.4 MHz; Calibrated: 2025/5/21 Sensor-Surface: 1.4mm (Mechanical Surface Detection), z = -39.0, 31.0 Phantom: ELI V5.0 (20deg probe tilt); Type: QD OVA 002 AA; Serial: 1153 DASY52 52.10.4(1535); SEMCAD X 14.6.14(7501) Area Scan (15x8x1): Measurement grid: dx=15mm, dy=15mm Maximum value of SAR (measured) = 0.117 W/kg Zoom Scan (5x5x7)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 11.85 V/m; Power Drift = -0.14 dB Peak SAR (extrapolated) = 0.152 W/kg SAR(1 g) = 0.104 W/kg; SAR(10 g) = 0.070 W/kg Maximum value of SAR (measured) = 0.133 W/kg 0 dB = 0.133 W/kg = -8.76 dBW/kg Test Laboratory: TUV Inc. Date: 2025/11/7 #02_941.5MHz-952MHz_200KG2E_HandHeld side_0mm_Freq946.750 MHz DUT: Astral HH Communication System: Microphone; Frequency: 946.75 MHz; Duty Cycle: 1:1 Medium: HSL900_251107 Medium parameters used: f = 946.75 MHz; σ = 0.979 S/m; ε r = 42.731; ρ = 1000 kg/m 3 Ambient Temperature：23.5 °C; Liquid Temperature：22.1 °C DASY Configuration: Electronics: DAE4 Sn855; Calibrated: 2025/4/23 Probe: EX3DV4 - SN7400; ConvF(9.33, 8.33, 9.64) @ 946.75 MHz; Calibrated: 2025/5/21 Sensor-Surface: 1.4mm (Mechanical Surface Detection), z = -39.0, 31.0 Phantom: ELI V5.0 (20deg probe tilt); Type: QD OVA 002 AA; Serial: 1153 DASY52 52.10.4(1535); SEMCAD X 14.6.14(7501) Area Scan (15x8x1): Measurement grid: dx=15mm, dy=15mm Maximum value of SAR (measured) = 0.0786 W/kg Zoom Scan (5x5x7)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 9.572 V/m; Power Drift = -0.09 dB Peak SAR (extrapolated) = 0.0960 W/kg SAR(1 g) = 0.069 W/kg; SAR(10 g) = 0.046 W/kg Maximum value of SAR (measured) = 0.0872 W/kg 0 dB = 0.0872 W/kg = -10.59 dBW/kg Test Laboratory: TUV Inc. Date: 2025/11/7 #03_952.85MHz-956.25MHz_200KG2E_HandHeld side_0mm_Freq952.950 MHz DUT: Astral HH Communication System: Microphone; Frequency: 952.95 MHz; Duty Cycle: 1:1 Medium: HSL900_251107 Medium parameters used: f = 952.95 MHz; σ = 0.98 S/m; ε r = 42.724; ρ = 1000 kg/m 3 Ambient Temperature：23.5 °C; Liquid Temperature：22.1 °C DASY Configuration: Electronics: DAE4 Sn855; Calibrated: 2025/4/23 Probe: EX3DV4 - SN7400; ConvF(9.33, 8.33, 9.64) @ 952.95 MHz; Calibrated: 2025/5/21 Sensor-Surface: 1.4mm (Mechanical Surface Detection), z = -39.0, 31.0 Phantom: ELI V5.0 (20deg probe tilt); Type: QD OVA 002 AA; Serial: 1153 DASY52 52.10.4(1535); SEMCAD X 14.6.14(7501) Area Scan (15x8x1): Measurement grid: dx=15mm, dy=15mm Maximum value of SAR (measured) = 0.0770 W/kg Zoom Scan (5x5x7)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 9.547 V/m; Power Drift = -0.06 dB Peak SAR (extrapolated) = 0.0960 W/kg SAR(1 g) = 0.069 W/kg; SAR(10 g) = 0.046 W/kg Maximum value of SAR (measured) = 0.0867 W/kg 0 dB = 0.0867 W/kg = -10.62 dBW/kg Test Laboratory: TUV Inc. Date: 2025/11/7 #05_956.45MHz-959.85MHz_200KG2E_HandHeld side_0mm_Freq959.750 MHz DUT: Astral HH Communication System: Microphone; Frequency: 959.75 MHz; Duty Cycle: 1:1 Medium: HSL900_251107 Medium parameters used: f = 960 MHz; σ = 0.981 S/m; ε r = 42.727; ρ = 1000 kg/m 3 Ambient Temperature：23.5 °C; Liquid Temperature：22.1 °C DASY Configuration: Electronics: DAE4 Sn855; Calibrated: 2025/4/23 Probe: EX3DV4 - SN7400; ConvF(9.33, 8.33, 9.64) @ 959.75 MHz; Calibrated: 2025/5/21 Sensor-Surface: 1.4mm (Mechanical Surface Detection), z = -39.0, 31.0 Phantom: ELI V5.0 (20deg probe tilt); Type: QD OVA 002 AA; Serial: 1153 DASY52 52.10.4(1535); SEMCAD X 14.6.14(7501) Area Scan (15x8x1): Measurement grid: dx=15mm, dy=15mm Maximum value of SAR (measured) = 0.0771 W/kg Zoom Scan (5x5x7)/Cube 0: Measurement grid: dx=8mm, dy=8mm, dz=5mm Reference Value = 9.480 V/m; Power Drift = -0.10 dB Peak SAR (extrapolated) = 0.0920 W/kg SAR(1 g) = 0.065 W/kg; SAR(10 g) = 0.043 W/kg Maximum value of SAR (measured) = 0.0828 W/kg 0 dB = 0.0828 W/kg = -10.82 dBW/kg Test Laboratory: TUV Inc. Date: 2025/11/10 #10_1435MHz-1525MHz_200KG2E_HandHeld side_0mm_Freq1524.815 MHz DUT: Astral HH Communication System: Microphone; Frequency: 1524.82 MHz; Duty Cycle: 1:1 Medium: HSL1450_251110 Medium parameters used: f = 1524.82 MHz; σ = 1.222 S/m; ε r = 40.327; ρ = 1000 kg/m 3 Ambient Temperature：23.6 °C; Liquid Temperature：22.5 °C DASY Configuration: Electronics: DAE4 Sn855; Calibrated: 2025/4/23 Probe: EX3DV4 - SN7400; ConvF(7.94, 7.1, 8.21) @ 1524.82 MHz; Calibrated: 2025/5/21 Sensor-Surface: 1.4mm (Mechanical Surface Detection), z = -39.0, 31.0 Phantom: ELI V5.…

Text truncated - open the document above for the full version.

Page 1 of 28 File Name: Sound Devices LLC.14941-1 Summary Issue 03 QMF21J - Issue 05 - KEC Issue 02 REPORT NUMBER: 01-14941-2-25 Summary Issue 03 Arnolds Court, Arnolds Farm Lane, Brentwood, Essex, CM13 1UT, UK Antenna Polar Plotting Customer Name Sound Devices LLC Job Number 14941-2 Equipment Name Astral HH Model No 28297 Serial No AA0425009000 Date of initial assessment12 th February 2025 Section 1 – Overall assessment Purpose of test To assess the radiation pattern and antenna gain of the EUT. Method  Below 1GHz frequencies oThe antenna was tested in a semi anechoic chamber. The EUT was positioned on a turntable 1.5m high and the measuring antenna was placed at a distance of 3 metres. The EUTs antenna was assessed with the measuring antenna both vertically and horizontally polarised. See photos in section 3.5 of this report for EUT position. A substitution was performed at the test frequencies to enable corrections to be applied to the measured values. A substitution measurement was made at the following frequencies: 470.1 MHz, 530 MHz, 600 MHz, 800 MHz and 902 MHz.  Above 1GHz frequencies oThe antenna was tested in a semi anechoic chamber. The EUT was positioned on a turntable 1.5m high and the measuring antenna was placed at a distance of 3 metres. The EUTs antenna was assessed with the measuring antenna vertically and horizontally polarised. See photos in section 3.5 of this report for EUT position. A substitution was performed at the test frequencies to enable corrections to be applied to the measured values. A substitution measurement was made at the following frequencies: 1154 MHz, 1240 MHz, 1524.9 MHz, 2400.6 MHz, 2441 MHz and 2481.6 MHz. The following conditions were applied: -  The EUT power level was set by the applicant. A power measurement was made prior to each plot.  The turntable was always rotated from 0 to 360 degrees clockwise.  Above 1 GHz the measuring antenna was at a fixed height of 1.5m, level with the centre of the EUT.  Below 1 GHz the measurement antenna was scanned from 1-4m.  The resultant antenna gain is referenced to dBd below 1 GHz and dBi above 1 GHz. Testing Recommendation Testing was for informative purpose only and for applicant to analyse results and decide how they want to proceed. Please contact KEC Brentwood if further testing is required. ©2025 Kiwa Electrical Compliance REPORT NUMBER: 01-14941-2-25 Summary Issue 03 ALL RIGHTS RESERVED Page 2 of 28 File Name: Sound Devices LLC.14941-2 Summary Issue 03 QMF21J - Issue 05 - KEC Issue 02 Section 2 – Summary of performed tests Test Result Antenna polar plotting Test performed ©2025 Kiwa Electrical Compliance REPORT NUMBER: 01-14941-2-25 Summary Issue 03 ALL RIGHTS RESERVED Page 3 of 28 File Name: Sound Devices LLC.14941-2 Summary Issue 03 QMF21J - Issue 05 - KEC Issue 02 Section 3 – Plots 3.1 Polar Plots dBd -4 -14 -24 -34 -44 -54 -64 -74 -84 -94 -104 -94 -84 -74 -64 -54 -44 -34 -24 -14 -4 14936-1 Horizontal 470.1 MHz Azimuth Trace A Res BW: 1 MHzVid BW: 3 MHzSweep: 60.00 s 12/02/2025 10:56:30E4440ACF: 470.100000 MHz Mkr Trace X-Axis Value Notes 1 1 Trace A 151.0000 s-21.17 dBd Peak gain (dBd) dBd 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 14936-1 Vertical 470.1 MHz Azimuth Trace A Res BW: 1 MHzVid BW: 3 MHzSweep: 60.00 s 12/02/2025 10:49:21E4440ACF: 470.100000 MHz Mkr Trace X-Axis Value Notes 1 1 Trace A 58.0000 s 0.31 dBd Peak gain (dBd) ©2025 Kiwa Electrical Compliance REPORT NUMBER: 01-14941-2-25 Summary Issue 03 ALL RIGHTS RESERVED Page 4 of 28 File Name: Sound Devices LLC.14941-2 Summary Issue 03 QMF21J - Issue 05 - KEC Issue 02 dBd 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 14936-1 Horizontal 470.1 MHz Elevation Trace A Res BW: 1 MHzVid BW: 3 MHzSweep: 60.00 s 12/02/2025 11:08:17E4440ACF: 470.100000 MHz Mkr Trace X-Axis Value Notes 1 1 Trace A 181.0000 s-0.67 dBd Peak gain (dBd) dBd -4 -14 -24 -34 -44 -54 -64 -74 -84 -94 -104 -94 -84 -74 -64 -54 -44 -34 -24 -14 -4 14936-1 Vertical 470.1 MHz Elevation Trace A Res BW: 1 MHzVid BW: 3 MHzSweep: 60.00 s 12/02/2025 11:11:59E4440ACF: 470.100000 MHz Mkr Trace X-Axis Value Notes 1 1 Trace A 278.0000 s-11.06 dBd Peak gain (dBd) ©2025 Kiwa Electrical Compliance REPORT NUMBER: 01-14941-2-25 Summary Issue 03 ALL RIGHTS RESERVED Page 5 of 28 File Name: Sound Devices LLC.14941-2 Summary Issue 03 QMF21J - Issue 05 - KEC Issue 02 dBd -4 -14 -24 -34 -44 -54 -64 -74 -84 -94 -104 -94 -84 -74 -64 -54 -44 -34 -24 -14 -4 14936-1 Horizontal 530 MHz Azimuth Trace A Res BW: 1 MHzVid BW: 3 MHzSweep: 60.00 s 12/02/2025 11:45:12E4440ACF: 530.000000 MHz Mkr Trace X-Axis Value Notes 1 1 Trace A 47.0000 s-20.40 dBd Peak gain (dBd) dBd 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 14936-1 Vertical 530 MHz Azimuth Trace A Res BW: 1 MHzVid BW: 3 MHzSweep: 60.00 s 12/02/2025 11:31:27E4440ACF: 530.000000 MHz Mkr Trace X-Axis Value Notes 1 1 Trace A 338.0000 s-0.56 dBd Peak gain (dBd) ©2025 Kiwa Electrical Compliance REPORT NUMBER: 01-14941-2-25 Summary Issue 03 ALL RIGHTS RESERVED Page 6 of 28 File Name: Sound Devices LLC.14941-2 Summary Issue 03 QMF21J - Issue 05 - KEC Issue 02 dBd 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 14936-1 Horizontal 530 MHz Elevation Trace A Res BW: 1 MHzVid BW: 3 MHzSweep: 60.00 s 12/02/2025 11:41:22E4440ACF: 530.000000 MHz Mkr Trace X-Axis Value Notes 1 1 Trace A 175.0000 s-1.16 dBd Peak gain (dBd) dBd -4 -14 -24 -34 -44 -54 -64 -74 -84 -94 -104 -94 -84 -74 -64 -54 -44 -34 -24 -14 -4 14936-1 Vertical 530 MHz Elevation Trace A Res BW: 1 MHzVid BW: 3 MHzSweep: 60.00 s 12/02/2025 11:36:03E4440ACF: 530.000000 MHz Mkr Trace X-Axis Value Notes 1 1 Trace A 351.0000 s-14.28 dBd Peak gain (dBd) ©2025 Kiwa Electrical Compliance REPORT NUMBER: 01-14941-2-25 Summary Issue 03 ALL RIGHTS RESERVED Page 7 of 28 File Name: Sound Devices LLC.14941-2 Summary Issue 03 QMF21J - Issue 05 - KEC Issue 02 dBd -4 -14 -24 -34 -44 -54 -…

Text truncated - open the document above for the full version.

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Radio Test Report Report No.:STS2505036W09 Issued for Sound Devices, LLC E7556 State Road 23 and 33, Reedsburg, WI 53959, United States Of America Product Name: Professional Handheld Wireless Microphone Brand Name: N/A Model Name: ASTRAL HH Series Model(s): N/A FCC ID: 2AKLX-28297 Test Standards: FCC Part 74 Rules Page 2 of 59 Report No.:STS2505036W09 TEST REPORT Applicant’s Name ................. : Sound Devices, LLC Address .................................. : E7556 State Road 23 and 33, Reedsburg, WI 53959, United States Of America Manufacturer's Name ........... : Sound Devices, LLC Address .................................. : E7556 State Road 23 and 33, Reedsburg, WI 53959, United States Of America Product Description Product Name ........................ : Professional Handheld Wireless Microphone Brand Name ......................... : N/A Model Name........................... : ASTRAL HH Series Model .......................... : N/A Test Standards ..................... : FCC Part 74 Rules Test Procedure ....................... : This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Date of Test .............................................. : Date of receipt of test item ....................... : 09 May 2025 Date of performance of tests .................... : 09 May 2025~17 Sept. 2025 Date of Issue ............................................ : 17 Sept. 2025 Test Result ................................................ : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) ANSI C63.10-2020;C63.26-2015 Page 3 of 59 Report No.:STS2505036W09 Table of Contents Page 1. SUMMARY OF TEST RESULTS 5 1.1 TEST FACTORY 6 1.2 MEASUREMENT UNCERTAINTY 6 2. GENERAL INFORMATION 7 2.1 GENERAL DESCRIPTION OF THE EUT 7 2.2 DESCRIPTION OF THE TEST MODES 9 2.3 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 10 2.4 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 11 2.5 TEST EQUIPMENT 12 3. TEST METHODOLOGY 13 3.1 GENERAL TEST PROCEDURES 13 3.2 DESCRIPTION OF TEST MODES 13 3.3 FCC PART 15.205 RESTRICTED BANDS OF OPERATIONS 13 4. FCC PART 74 REQUIREMENTS 14 4.1 CONDUCTED EMISSION MEASUREMENT 14 4.2 RADIATED SPURIOUS EMISSION 18 4.3 EMISSION MASK I 18 4.4 EMISSION MASK II 18 4.5 FREQUENCY STABILITY VS. TEMPERATURE & VOLTAGE 48 4.6 OCCUPIED BANDWIDTH 50 4.7 AUDIO FREQUENCY RESPONSE 53 4.8 MODULATION DEVIATION 54 4.9 RF OUTPUT POWER 55 PHOTOS OF TEST SETUP 59 Page 4 of 59 Report No.:STS2505036W09 Revision History Rev. Issue Date Report No. Effect Page Contents 00 17 Sept. 2025 STS2505036W09 ALL Initial Issue Page 5 of 59 Report No.:STS2505036W09 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: The EUT has been tested according to FCC CFR 47: Part 2: Frequency Allocations and Radio Treaty Matters: General Rules and Regulations (10-1-05 Edition) Part 74: Experimental Radio, Auxiliary, Special Broadcast and other program distributional services Emission Standard Item Limit Result FCC 2.1053; 74.861(e)(6) Radiated Spurious Emission Refer to 74.861e(6) PASS FCC 2.1046 (a), 74.861(e)(1) RF Output Power 250 mW PASS FCC 2.1047 (b), 74.861(e)(3) Modulation Deviation Refer to 74.861e(2) N/A FCC 2.1047 (a) Audio Frequency Response Refer to 2.1047(a) N/A FCC 74.861 (e)(5) Occupied Bandwidth < 200 KHz PASS FCC 74.861 (e)(6)(i) (ii); FCC 2.1049 Emission Mask Refer to 74.861e(6) PASS 2.1055(b); 74.861 e(4) Frequency Stability vs. Temperature Refer to 74.861e(4) PASS 2.1055(a)(1); 74.861 e(4) Frequency Stability vs. Voltage Refer to 74.861e(4) PASS FCC 15.207 Line Conducted Emissions Refer to 15.207 PASS Note: (1) “N/A” denotes test is not applicable in this Test Report. Page 6 of 59 Report No.:STS2505036W09 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. :101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.755dB 2 Unwanted Emissions, conducted ±2.874dB 3 All emissions, radiated 9K-30MHz ±3.80dB 4 All emissions, radiated 30M-1GHz ±4.18dB 5 All emissions, radiated 1G-6GHz ±4.90dB 6 All emissions, radiated>6G ±5.24dB 7 Conducted Emission (9KHz-150KHz) ±2.19dB 8 Conducted Emission (150KHz-30MHz) ±2.53dB 9 Occupied Channel Bandwidth ±3.5% 10 Duty Cycle ±3.2% Page 7 of 59 Report No.:STS2505036W09 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name: Professional Handheld Wireless Microphone Brand Name: N/A Model Name: ASTRAL HH Series Model : N/A Model Difference description: N/A Operation Frequency Range 1435Mz - 1525MHz Modulation mode / type: Digital modulation Temperature Range: -10 °C ~ +40 °C Test frequency list: See Note 4. Power Rating N/A Adapter N/A Battery Rated Voltage: DC 3.7V Charge Limit Voltage: DC 4.2V Capacity: 4000mAh Software version number: N/A Hardware version number: N/A Note: 1. For a more detailed features description, please refer to the manufacturer’s specifications or the User Manual. 2. 1435 MHz - 1525MHz Channel Frequency Channel F…

Text truncated - open the document above for the full version.

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Radio Test Report Report No.:STS2505036W08 Issued for Sound Devices, LLC E7556 State Road 23 and 33, Reedsburg, WI 53959, United States Of America Product Name: Professional Handheld Wireless Microphone Brand Name: N/A Model Name: ASTRAL HH Series Model(s): N/A FCC ID: 2AKLX-28297 Test Standards: FCC Part 74 Rules Page 2 of 59 Report No.:STS2505036W08 TEST REPORT Applicant’s Name ................. : Sound Devices, LLC Address .................................. : E7556 State Road 23 and 33, Reedsburg, WI 53959, United States Of America Manufacturer's Name ........... : Sound Devices, LLC Address .................................. : E7556 State Road 23 and 33, Reedsburg, WI 53959, United States Of America Product Description Product Name ........................ : Professional Handheld Wireless Microphone Brand Name ......................... : N/A Model Name........................... : ASTRAL HH Series Model .......................... : N/A Test Standards ..................... : FCC Part 74 Rules Test Procedure ....................... : This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Date of Test .............................................. : Date of receipt of test item ....................... : 09 May 2025 Date of performance of tests .................... : 09 May 2025~17 Sept. 2025 Date of Issue ............................................ : 17 Sept. 2025 Test Result ................................................ : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) ANSI C63.10-2020;C63.26-2015 Page 3 of 59 Report No.:STS2505036W08 Table of Contents Page 1. SUMMARY OF TEST RESULTS 5 1.1 TEST FACTORY 6 1.2 MEASUREMENT UNCERTAINTY 6 2. GENERAL INFORMATION 7 2.1 GENERAL DESCRIPTION OF THE EUT 7 2.2 DESCRIPTION OF THE TEST MODES 9 2.3 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 10 2.4 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 11 2.5 TEST EQUIPMENT 12 3. TEST METHODOLOGY 13 3.1 GENERAL TEST PROCEDURES 13 3.2 DESCRIPTION OF TEST MODES 13 3.3 FCC PART 15.205 RESTRICTED BANDS OF OPERATIONS 13 4. FCC PART 74 REQUIREMENTS 14 4.1 CONDUCTED EMISSION MEASUREMENT 14 4.2 RADIATED SPURIOUS EMISSION 18 4.3 EMISSION MASK I 18 4.4 EMISSION MASK II 18 4.5 FREQUENCY STABILITY VS. TEMPERATURE & VOLTAGE 48 4.6 OCCUPIED BANDWIDTH 50 4.7 AUDIO FREQUENCY RESPONSE 53 4.8 MODULATION DEVIATION 54 4.9 RF OUTPUT POWER 55 PHOTOS OF TEST SETUP 59 Page 4 of 59 Report No.:STS2505036W08 Revision History Rev. Issue Date Report No. Effect Page Contents 00 17 Sept. 2025 STS2505036W08 ALL Initial Issue Page 5 of 59 Report No.:STS2505036W08 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: The EUT has been tested according to FCC CFR 47: Part 2: Frequency Allocations and Radio Treaty Matters: General Rules and Regulations (10-1-05 Edition) Part 74: Experimental Radio, Auxiliary, Special Broadcast and other program distributional services Emission Standard Item Limit Result FCC 2.1053; 74.861(e)(6) Radiated Spurious Emission Refer to 74.861e(6) PASS FCC 2.1046 (a), 74.861(e)(1) RF Output Power 250 mW PASS FCC 2.1047 (b), 74.861(e)(3) Modulation Deviation Refer to 74.861e(2) N/A FCC 2.1047 (a) Audio Frequency Response Refer to 2.1047(a) N/A FCC 74.861 (e)(5) Occupied Bandwidth < 200 KHz PASS FCC 74.861 (e)(6)(i) (ii); FCC 2.1049 Emission Mask Refer to 74.861e(6) PASS 2.1055(b); 74.861 e(4) Frequency Stability vs. Temperature Refer to 74.861e(4) PASS 2.1055(a)(1); 74.861 e(4) Frequency Stability vs. Voltage Refer to 74.861e(4) PASS FCC 15.207 Line Conducted Emissions Refer to 15.207 PASS Note: (1) “N/A” denotes test is not applicable in this Test Report. Page 6 of 59 Report No.:STS2505036W08 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. :101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.755dB 2 Unwanted Emissions, conducted ±2.874dB 3 All emissions, radiated 9K-30MHz ±3.80dB 4 All emissions, radiated 30M-1GHz ±4.18dB 5 All emissions, radiated 1G-6GHz ±4.90dB 6 All emissions, radiated>6G ±5.24dB 7 Conducted Emission (9KHz-150KHz) ±2.19dB 8 Conducted Emission (150KHz-30MHz) ±2.53dB 9 Occupied Channel Bandwidth ±3.5% 10 Duty Cycle ±3.2% Page 7 of 59 Report No.:STS2505036W08 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name: Professional Handheld Wireless Microphone Brand Name: N/A Model Name: ASTRAL HH Series Model : N/A Model Difference description: N/A Operation Frequency Range 956.45MHz - 959.85Mz Modulation mode / type: Digital modulation Temperature Range: -10 °C ~ +40 °C Test frequency list: See Note 4. Power Rating N/A Adapter N/A Battery Rated Voltage: DC 3.7V Charge Limit Voltage: DC 4.2V Capacity: 4000mAh Software version number: N/A Hardware version number: N/A Note: 1. For a more detailed features description, please refer to the manufacturer’s specifications or the User Manual. 2. 956.45 MHz -959.85 MHz Channel Frequency C…

Text truncated - open the document above for the full version.

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Radio Test Report Report No.:STS2505036W07 Issued for Sound Devices, LLC E7556 State Road 23 and 33, Reedsburg, WI 53959, United States Of America Product Name: Professional Handheld Wireless Microphone Brand Name: N/A Model Name: ASTRAL HH Series Model(s): N/A FCC ID: 2AKLX-28297 Test Standards: FCC Part 74 Rules Page 2 of 59 Report No.:STS2505036W07 TEST REPORT Applicant’s Name ................. : Sound Devices, LLC Address .................................. : E7556 State Road 23 and 33, Reedsburg, WI 53959, United States Of America Manufacturer's Name ........... : Sound Devices, LLC Address .................................. : E7556 State Road 23 and 33, Reedsburg, WI 53959, United States Of America Product Description Product Name ........................ : Professional Handheld Wireless Microphone Brand Name ......................... : N/A Model Name........................... : ASTRAL HH Series Model .......................... : N/A Test Standards ..................... : FCC Part 74 Rules Test Procedure ....................... : ANSI C63.10-2020; C63.26-2015 This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Date of Test .............................................. : Date of receipt of test item ....................... : 09 May 2025 Date of performance of tests .................... : 09 May 2025~17 Sept. 2025 Date of Issue ............................................ : 17 Sept. 2025 Test Result ................................................ : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 59 Report No.:STS2505036W07 Table of Contents Page 1. SUMMARY OF TEST RESULTS 5 1.1 TEST FACTORY 6 1.2 MEASUREMENT UNCERTAINTY 6 2. GENERAL INFORMATION 7 2.1 GENERAL DESCRIPTION OF THE EUT 7 2.2 DESCRIPTION OF THE TEST MODES 9 2.3 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 10 2.4 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 11 2.5 TEST EQUIPMENT 12 3. TEST METHODOLOGY 13 3.1 GENERAL TEST PROCEDURES 13 3.2 DESCRIPTION OF TEST MODES 13 3.3 FCC PART 15.205 RESTRICTED BANDS OF OPERATIONS 13 4. FCC PART 74 REQUIREMENTS 14 4.1 CONDUCTED EMISSION MEASUREMENT 14 4.2 RADIATED SPURIOUS EMISSION 18 4.3 EMISSION MASK I 18 4.4 EMISSION MASK II 18 4.5 FREQUENCY STABILITY VS. TEMPERATURE & VOLTAGE 48 4.6 OCCUPIED BANDWIDTH 50 4.7 AUDIO FREQUENCY RESPONSE 53 4.8 MODULATION DEVIATION 54 4.9 RF OUTPUT POWER 55 PHOTOS OF TEST SETUP 59 Page 4 of 59 Report No.:STS2505036W07 Revision History Rev. Issue Date Report No. Effect Page Contents 00 17 Sept. 2025 STS2505036W07 ALL Initial Issue Page 5 of 59 Report No.:STS2505036W07 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: The EUT has been tested according to FCC CFR 47: Part 2: Frequency Allocations and Radio Treaty Matters: General Rules and Regulations (10-1-05 Edition) Part 74: Experimental Radio, Auxiliary, Special Broadcast and other program distributional services Emission Standard Item Limit Result FCC 2.1053; 74.861(e)(6) Radiated Spurious Emission Refer to 74.861e(6) PASS FCC 2.1046 (a), 74.861(e)(1) RF Output Power 250 mW PASS FCC 2.1047 (b), 74.861(e)(3) Modulation Deviation Refer to 74.861e(2) PASS FCC 2.1047 (a) Audio Frequency Response Refer to 2.1047(a) PASS FCC 74.861 (e)(5) Occupied Bandwidth < 200 KHz PASS FCC 74.861 (e)(6)(i) (ii); FCC 2.1049 Emission Mask Refer to 74.861e(6) PASS 2.1055(b); 74.861 e(4) Frequency Stability vs. Temperature Refer to 74.861e(4) PASS 2.1055(a)(1); 74.861 e(4) Frequency Stability vs. Voltage Refer to 74.861e(4) PASS FCC 15.207 Line Conducted Emissions Refer to 15.207 PASS Note: (1) “N/A” denotes test is not applicable in this Test Report. Page 6 of 59 Report No.:STS2505036W07 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. :101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.755dB 2 Unwanted Emissions, conducted ±2.874dB 3 All emissions, radiated 9K-30MHz ±3.80dB 4 All emissions, radiated 30M-1GHz ±4.18dB 5 All emissions, radiated 1G-6GHz ±4.90dB 6 All emissions, radiated>6G ±5.24dB 7 Conducted Emission (9KHz-150KHz) ±2.19dB 8 Conducted Emission (150KHz-30MHz) ±2.53dB 9 Occupied Channel Bandwidth ±3.5% 10 Duty Cycle ±3.2% Page 7 of 59 Report No.:STS2505036W07 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name: Professional Handheld Wireless Microphone Brand Name: N/A Model Name: ASTRAL HH Series Model : N/A Model Difference description: N/A Operation Frequency Range 952.85MHz – 956.25MHz Modulation mode / type: Digital modulation Temperature Range: 0°C-40°C Test frequency list: See Note 4. Power Rating N/A Adapter N/A Battery Rated Voltage: DC 3.7V Charge Limit Voltage: DC 4.2V Capacity: 4000mAh Software version number: N/A Hardware version number: N/A Note: 1. For a more detailed features description, please refer to the manufacturer’s specifications or the User Manual. 2. 952.85 MHz – 956.25 MHz Channel Frequency Cha…

Text truncated - open the document above for the full version.