RF Exposure Report

FCC ID: JQU801660B

RF Exposure Info

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FCCID_3994966

                                      Kapsch TrafficCom




Info


Number         801660B Application                            Author         Alastair Malarky
Date           2018 06 06


To             TUV SUD Canada Inc




JANUS™ Interior OBU Family – 801660B MPE & SAR

References:     FCC: JQU 801660B
                Industry Canada 2665A-801660B
                RSS-102, Issue 5
                OET Bulletin 65, Edition 97
                447498 D01 General RF Exposure Guidance v06
                801660B User Manuals

The models are MPE and SAR test/evaluation exempt, as shown by calculation herein. Further due to the
separation distance achieved by design, no user labelling is required as demonstrated herein.

The OBUs comprise a RF emitting PCB, including PCB antenna, inside an enclosure. The minimum
distance from the transmit circuit and antenna one the PCB to the external of the enclosure is 5mm. The
UUT has a maximum peak EIRP of 0.82 mW (ERP of 0.5mW) and maximum peak conducted output power of
0.4 mW.

In the limit, without any directives restricting separation distance to users in the manuals, the most
conservative operating separation distance from the human body is 5mm. Note the normal mounting
instructions (see user manuals) result in separation distances much greater than this.

For separation distances of <20cm SAR is applicable, while for >=20 cm RF exposure (MPE) is applicable.

SAR Evaluation Exemption RSS-102

Per RSS-102, 2.5.1 and linearly interpolating for operating frequency into Table 1, at <= 5mm the exemption
limit at 915 MHz is 16.24 mW.

The units are therefore SAR evaluation exempt. Since the minimum separation distance is achieved by
design no user instructions on maintaining separation distance are required.




© 2018 Kapsch TrafficCom Canada Inc., all rights reserved.


                                     Kapsch TrafficCom




SAR Test Exclusion Exemption KBD 447498
Per KBD 447498, section 4.3.1 (a) the SAR test exemption limit is given by:




Where power is maximum conducted power. Applying the formula we obtain:
                              Power (nearest mW)            1
                                         Frequency      0.915 GHz
                           test separation distance         5 mm

                                    formula result       0.19

The units are therefore SAR evaluation exempt. Since the minimum separation distance is achieved by
design no user instructions on maintaining separation distance are required.




© 2018 Kapsch TrafficCom Canada Inc., all rights reserved.



Document Created: 2018-09-05 18:23:25
Document Modified: 2018-09-05 18:23:25

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