MPE Report

FCC ID: LDK68612057

RF Exposure Info

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FCCID_4323624

FCC ID: LDK68612057 IC: 2461N-68612057 1. Maximum Permissible Exposure (MPE) Standard Applicable According to §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. This is a Mobile device, the MPE is required. According to §1.1310 and §2.1091 RF exposure is calculated. Limits for Maximum Permissive Exposure (MPE) Frequency Range Electric Field Magnetic Field Power Density Averaging Time (MHz) Strength (V/m) Strength (A/m) (mW/cm2) (minute) Limits for General Population/Uncontrolled Exposure 0.3-1.34 614 1.63 *(100) 30 1.34-30 824/f 2.19/f *(180/f2 ) 30 30-300 27.5 0.073 0.2 30 300-1500 / / F/1500 30 1500-15000 / / 1.0 30 F = frequency in MHz * = Plane-wave equipment power density International Standards Laboratory Corp. 1

FCC ID: LDK68612057 IC: 2461N-68612057 According to RSS 102 issue 5. 2.5.2 Exemption Limits for Routine Evaluation – RF Exposure Evaluation RF exposure evaluation is required if the separation distance between the user and/or bystander and the device’s radiating element is greater than 20 cm, except when the device operates as follows: • below 20 MHz6 and the source-based, time-averaged maximum e.i.r.p. of the device is equal to or less than 1 W (adjusted for tune-up tolerance); • at or above 20 MHz and below 48 MHz and the source-based, time-averaged maximum e.i.r.p. of the device is equal to or less than 22.48/ƒ0.5W (adjusted for tune-up tolerance), where ƒ is in MHz; • at or above 48 MHz and below 300 MHz and the source-based, time-averaged maximum e.i.r.p. of the device is equal to or less than 0.6 W (adjusted for tune-up tolerance); • at or above 300 MHz and below 6 GHz and the source-based, time-averaged maximum e.i.r.p. of the device is equal to or less than 1.31 x 10-2 ƒ0.6834 W (adjusted for tune-up tolerance), where ƒ is in MHz; • at or above 6 GHz and the source-based, time-averaged maximum e.i.r.p. of the device is equal to or less than 5 W (adjusted for tune-up tolerance). In these cases, the information contained in the RF exposure technical brief may be limited to information that demonstrates how the e.i.r.p. was derived. International Standards Laboratory Corp. 2

FCC ID: LDK68612057 IC: 2461N-68612057 Maximum Permissible Exposure (MPE) Evaluation 2.4GHz mode: BT The worst case: refer to FCC test report for detail measurement date. Power measurement: Frequency Output Power Output Power Limit (MHz) (dBm) (W) (W) Low 8.34 0.00682 1 Mid 8.57 0.00719 1 High 8.01 0.00632 1 Prediction of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 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 Maximum output power at antenna input terminal: 8.57 (dBm) Maximum output power at antenna input terminal: 7.19448978 (mW) Tune-Up power Tolerance: 1 dB Duty cycle: 100 (%) Maximum Pav : 9.057326009 (mW) Antenna gain (typical): 2.44 (dBi) Maximum antenna gain: 1.753880502 (numeric) Prediction distance: 20 (cm) MPE limit for uncontrolled exposure at prediction 1 (mW/cm^2) Power density at predication frequency at 20 (cm) 0.0031619 (mW/cm^2) Measurement Result: The predicted power density level at 20 cm is 0.0031619 mW/cm2.. This is below the uncontrolled exposure limit of 1 mW/cm2. International Standards Laboratory Corp. 3

FCC ID: LDK68612057 IC: 2461N-68612057 2.4GHz mode: BLE The worst case: refer to FCC test report for detail measurement date. Power measurement: Frequency Output Power Output Power Limit (MHz) (dBm) (W) (W) Low 5.52 0.00356 1 Mid 5.95 0.00394 1 High 5.31 0.00340 1 Prediction of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 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 Maximum output power at antenna input terminal: 5.95 (dBm) Maximum output power at antenna input terminal: 3.935500755 (mW) Tune-Up power Tolerance: 1 dB Duty cycle: 100 (%) Maximum Pav : 4.954501908 (mW) Antenna gain (typical): 2.44 (dBi) Maximum antenna gain: 1.753880502 (numeric) Prediction distance: 20 (cm) MPE limit for uncontrolled exposure at prediction 1 (mW/cm^2) Power density at predication frequency at 20 (cm) 0.0017296 (mW/cm^2) Measurement Result: The predicted power density level at 20 cm is 0.0016825 mW/cm2.. This is below the uncontrolled exposure limit of 1 mW/cm2. International Standards Laboratory Corp. 4

FCC ID: LDK68612057 IC: 2461N-68612057 802.11n HT20 Cable loss = 0 Output Power Limit Detector (dBm) CH PK AV (dBm) (dBm) Low 23.43 13.35 Mid 23.57 14.06 30.00 High 23.46 13.39 Prediction of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 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 Maximum output power at antenna input terminal: 23.57 (dBm) Maximum output power at antenna input terminal: 227.5097431 (mW) Tune-Up power Tolerance: 1 dB Duty cycle: 100 (%) Maximum Pav : 286.417797 (mW) Antenna gain (typical): 2.44 (dBi) Maximum antenna gain: 1.753880502 (numeric) Prediction distance: 20 (cm) MPE limit for uncontrolled exposure at prediction 1 (mW/cm^2) Power density at predication frequency at 20 (cm) 0.0999886 (mW/cm^2) Measurement Result: The predicted power density level at 20 cm is 0.0999886 mW/cm2.. This is below the uncontrolled exposure limit of 1 mW/cm2.. International Standards Laboratory Corp. 5

FCC ID: LDK68612057 IC: 2461N-68612057 5150MHz – 5350MHz Mode: The worst case of Average power a mode: refer to FCC test report for detail measurement date. Power measurement: 802.11a Mode Channel power (dBm) limit(dBm) result 5180 14.23 23.97 pass 802.11a 5260 14.07 23.97 pass 5320 14.11 23.97 pass Prediction of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 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 Maximum output power at antenna input terminal: 14.23 (dBm) Maximum output power at antenna input terminal: 26.48500139 (mW) Tune-Up power Tolerance: 1 dB Duty cycle: 100 (%) Maximum Pav : 33.34264128 (mW) Antenna gain (typical): 0.71 (dBi) Maximum antenna gain: 1.177605974 (numeric) Prediction distance: 20 (cm) MPE limit for uncontrolled exposure at prediction 1 (mW/cm^2) Power density at predication frequency at 20 (cm) 0.0078154 (mW/cm^2) Measurement Result The predicted power density level at 20 cm is 0.0078154 mW/cm2. This is below the uncontrolled exposure limit of 1 mW/cm2. International Standards Laboratory Corp. 6

FCC ID: LDK68612057 IC: 2461N-68612057 5470MHz – 5725MHz Mode: The worst case of Average power a mode: refer to FCC test report for detail measurement date. Power measurement: 802.11n HT40 Mode Channel power (dBm) limit(dBm) result 5510 14.01 23.97 pass 802.11a 5550 14.27 23.97 pass 5670 14.19 23.97 pass Prediction of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 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 Maximum output power at antenna input terminal: 14.27 (dBm) Maximum output power at antenna input terminal: 26.73006409 (mW) Tune-Up power Tolerance: 1 dB Duty cycle: 100 (%) Maximum Pav : 33.65115694 (mW) Antenna gain (typical): 0.71 (dBi) Maximum antenna gain: 1.177605974 (numeric) Prediction distance: 20 (cm) MPE limit for uncontrolled exposure at prediction 1 (mW/cm^2) Power density at predication frequency at 20 (cm) 0.0078877 (mW/cm^2) Measurement Result The predicted power density level at 20 cm is 0.0078877mW/cm2. This is below the uncontrolled exposure limit of 1 mW/cm2. International Standards Laboratory Corp. 7

FCC ID: LDK68612057 IC: 2461N-68612057 5725MHz – 5850MHz Mode: The worst case of Average power a mode: refer to FCC test report for detail measurement date. Power measurement: 802.11n HT20 Mode Channel power (dBm) limit(dBm) result 5745 14.02 30 pass 802.11a 5785 13.92 30 pass 5825 14.25 30 pass Prediction of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 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 Maximum output power at antenna input terminal: 14.25 (dBm) Maximum output power at antenna input terminal: 26.6072506 (mW) Tune-Up power Tolerance: 1 dB Duty cycle: 100 (%) Maximum Pav : 33.49654392 (mW) Antenna gain (typical): 0.71 (dBi) Maximum antenna gain: 1.177605974 (numeric) Prediction distance: 20 (cm) MPE limit for uncontrolled exposure at prediction 1 (mW/cm^2) Power density at predication frequency at 20 (cm) 0.0078515 (mW/cm^2) Measurement Result The predicted power density level at 20 cm is 0.0078515mW/cm2. This is below the uncontrolled exposure limit of 1 mW/cm2. International Standards Laboratory Corp. 8

FCC ID: LDK68612057 IC: 2461N-68612057 IC EIRP/Conducted Power level: 2.4GHz, BT mode IC EIRP level Frequency: 2441 MHz Maximum output power at antenna input terminal: 8.57 (dBm) Tune-Up power Tolerance: 1 dB Duty cycle: 100 (%) Antenna gain (typical): 2.44 (dBi) EIRP: 15.885 mW EIRP: 0.01589 W EIRP Limit 2.706 W Measurement Result: The EIRP level is 0.01589 W which less than RSS102 section 2.5.2 Exemption Limits above 300 MHz and below 6 GHz condition. IC EIRP/Conducted Power level: 2.4GHz, BLE mode IC EIRP level Frequency: 2441 MHz Maximum output power at antenna input terminal: 5.91 (dBm) Tune-Up power Tolerance: 1 dB Duty cycle: 100 (%) Antenna gain (typical): 2.44 (dBi) EIRP: 8.610 mW EIRP: 0.00861 W EIRP Limit 2.706 W Measurement Result: The EIRP level is 0.00861 W which less than RSS102 section 2.5.2 Exemption Limits above 300 MHz and below 6 GHz condition. International Standards Laboratory Corp. 9

FCC ID: LDK68612057 IC: 2461N-68612057 IC EIRP/Conducted Power level: 2.4GHz, 802.11 n_HT20 mode 2400-2483.5 MHz 2437 MHz Tune-UP power at antenna input terminal: 23.57 (dBm) Tune-Up power Tolerance: 1 dB Duty cycle: 100 (%) Antenna gain (typical): 2.44 (dBi) Conducted Power: 286.418 mW Conducted Power: 0.28642 W EIRP: 502.343 mW EIRP: 0.50234 W EIRP Limit 2.703 W Measurement Result: The Conducted Power level is 0.28642 W which less than RSS102 section 2.5.2 Exemption Limits (2.703 W ) above 300 MHz and below 6 GHz condition. IC EIRP/Conducted Power level: 5150-5350MHz mode 5150-5350 MHz 5180 MHz Tune-UP power at antenna input terminal: 14.23 (dBm) Tune-Up power Tolerance: 1 dB Duty cycle: 100 (%) Antenna gain (typical): 0.71 (dBi) Conducted Power: 33.343 mW Conducted Power: 0.03334 W EIRP: 39.264 mW EIRP: 0.03926 W EIRP Limit 4.525 W Measurement Result: The Conducted Power level is 0.03334 W which less than RSS247 section 2.5.2 Exemption Limits (4.525W ) above 300 MHz and below 6 GHz condition. International Standards Laboratory Corp. 10

FCC ID: LDK68612057 IC: 2461N-68612057 IC EIRP/Conducted Power level: 5470-5725MHz, 802.11n_HT40 mode 5470-5725 MHz 5550 MHz Tune-UP power at antenna input terminal: 14.27 (dBm) Tune-Up power Tolerance: 1 dB Duty cycle: 100 (%) Antenna gain (typical): 0.71 (dBi) Conducted Power: 33.651 mW Conducted Power: 0.03365 W EIRP: 39.628 mW EIRP: 0.03963 W EIRP Limit 4.744 W Measurement Result: The Conducted Power level is 0.03365W which less than RSS247 section 2.5.2 Exemption Limits (4.744W) above 300 MHz and below 6 GHz condition. IC EIRP/Conducted Power level: 5725-5850MHz, 802.11 an mode 5725-5850 MHz 5825 MHz Tune-UP power at antenna input terminal: 14.25 (dBm) Tune-Up power Tolerance: 1 dB Duty cycle: 100 (%) Antenna gain (typical): 0.71 (dBi) Conducted Power: 33.497 mW Conducted Power: 0.03350 W EIRP: 39.446 mW EIRP: 0.03945 W EIRP Limit 4.903 W Measurement Result: The Conducted Power level is 0.03350W which less than RSS247 section 2.5.2 Exemption Limits (4.903W) above 300 MHz and below 6 GHz condition. ~ End of Report ~ International Standards Laboratory Corp. 11


Document Created: 2019-06-19 13:29:31
Document Modified: 2019-06-19 13:29:31
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