RF Exposure

FCC ID: TV7LHG5ND

RF Exposure Info

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FCCID_3048697

Mikrotik Model: RouterBOARD LHG-5nD Test Number: 160414a MPE Calculator MPE uses EIRP for calculation. EIRP is based on TX power added to the antenna gain in dBi. dBi = dB gain compared to an isotropic radiator. S = power density in mW/cm^2 Antenna Gain (dBi) 27 Output Power dBd + 2.17 = dBi dBi to dBd 2.2 Tx Frequency (MHz) 5785 Maximum (Watts) 0.001 Antenna Gain (dBd) 24.83 Cable Loss (dB) 0.0 (dBm) 0.0 Antenna minus cable (dBi) 27.00 Calculated ERP (mw) 304.089 EIRP = Po(dBM) + Gain (dB) Calculated EIRP (mw) 501.187 Radiated (EIRP) dBm 27.000 Power density (S) ERP = EIRP - 2.17 dB Radiated (ERP) dBm 24.830 EIRP ------- = mW/cm^2 4 p r^2 EIRP (mW), r (cm) Occupational Limit FCC radio frequency radiation exposure limits per 1.1310 5 mW/cm2 Frequency (MHz) Occupational Limit (mW/cm2 ) Public Limit (mW/cm2 ) 50 W/m2 300-1,500 f/300 f/1500 General Public Limit 1,500-10,000 5 1 1 mW/cm2 10 W/m2 Occupational Limit IC radio frequency radiation exposure limits per RSS-102 0.6455ƒ0.5 W/m2 Frequency (MHz) Occupational Limit (W/m2 ) Public Limit (W/m2 ) 49.09621 W/m2 100-6,000 0.6455ƒ0.5 General Public Limit 6,000-15,000 50 0.02619ƒ0.6834 W/m2 48-300 1.291 9.75649 W/m2 300-6,000 0.02619ƒ0.6834 6,000-15,000 50 10 EIRP S S Distance Distance Distance Distance milliwatts mW/cm2 W/m2 cm meter inches Feet 501.187 0.00492 0.04924 90.00 0.90 35.43 2.95 501.187 0.00623 0.06232 80.00 0.80 31.50 2.62 501.187 0.00814 0.08139 70.00 0.70 27.56 2.30 501.187 0.01108 0.11079 60.00 0.60 23.62 1.97 501.187 0.01595 0.15953 50.00 0.50 19.69 1.64 501.187 0.02493 0.24927 40.00 0.40 15.75 1.31 501.187 0.04431 0.44315 30.00 0.30 11.81 0.98 501.187 0.09971 0.99708 20.00 0.20 7.87 0.66 501.187 0.23600 2.35995 13.00 0.13 5.12 0.43 501.187 0.62318 6.23175 8.00 0.08 3.15 0.26 501.187 1.00487 10.04868 6.30 0.063 2.48 0.21 501.187 1.31845 13.18453 5.50 0.055 2.17 0.18 501.187 1.59533 15.95329 5.00 0.050 1.97 0.16 501.187 2.49270 24.92701 4.00 0.040 1.57 0.13 501.187 4.43147 44.31468 3.00 0.030 1.18 0.10 501.187 9.97080 99.70803 2.00 0.020 0.79 0.07 501.187 39.88321 398.83213 1.00 0.010 0.39 0.03 Occupational Limit minimum Distance Frequency (MHz) Public Limit minimum distance (meters) (meters) 47CFR 1.1310 0.03 0.06 RSS-102 The calculation demonstrates compliance with RF exposure requirements when the a seperation distance of 20cm or great is maintained. RSS-102 Exclusion calcualtion 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. (1.31 x 10-2)* ƒ^0.6834 W f= 5785 Calculation Requirement for exclusion = 4.880107784 W e.i.r.p Power of EUT = 0.501 W The e.i.r.p of the EUT was calculated summing the output power of the two transmitter chains and adding antenna gain to provide effective isotropic radiator power. The eirp was calculated with the transmitter output power and isotropic gain of the antenna. The calculation demonstrates compliance with RF exposure requirements when the a seperation distance of 20cm or great is maintained. Rogers Labs, Inc. Mikrotikls SIA S/N: 66750503D06F/548 4405 W. 259th Terrace Model: RouterBOARD LHG-5nD FCC ID#: TV7LHG5ND Louisburg, KS 66053 Test #: 160414 IC: 7442A-LHG5ND Phone/Fax: (913) 837-3214 Test to: 47CFR, 15.407, RSS-247 Date: June 30, 2016 Revision 1 File: RBLHG5nD RFExp 1 Page 1 of 1


Document Created: 2016-06-30 14:18:03
Document Modified: 2016-06-30 14:18:03
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