MPE Report

FCC ID: 2AJ2A-RCM24G

RF Exposure Info

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FCCID_3656705

MPE Calculation FCC ID: 2AJ2A-RCM24G in Intel® Drone link environment IC ID: 1000B-RCM24G in Intel® Drone link environment 1 Device Setup (Intel® Drone link environment) In the considered host application, two transmitters (proprietary Radio Control Module RCM24G) are collocated in coexistence with a Bluetooth module. The two RCM24 modules transmit parallel with full power (no CCA). A pseudo random hopping sequence along with dissimilar seeding ensures that both modules never occupy the same channel at a time. The IDL host can be used on tripod or attached to the back of a laptop. Figure 1 - Exemplary Set-up, Laptop use 2 Applicability References FCC - 47 CFR Portable: (§2.1093) — A portable device is defined as a transmitting device designed to be used so that the radiating structure(s) of the device is / are within 20 centimeters of the body of the user. Mobile: (§2.1091) (b) — A mobile device is defined as a transmitting device designed to be used in other than fixed locations and to generally be used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitter’s radiating structure(s) and the body of the user or nearby persons. Per §2.1091d(d)(4) In some cases (for example, modular or desktop transmitters), the potential conditions of use of a device may not allow easy classification of that device as either Mobile or Portable. In these cases, applicants are responsible for determining minimum distances for compliance for the intended use and installation of the device based on evaluation of either specific absorption rate (SAR), field strength, or power density, whichever is most appropriate. - KDB447498D01(8) and KDB616217D01 The considered host application is mobile for professional use and a separation of 20cm is required by manual. Consequently for intended use this MPE is sufficient. In respect to “potential conditions of use” as per 47 CFR 2.1091 also SAR measurement has been performed. The “minimum distance of compliance” has been determined through probing measurements to be 2cm with 1cm steps. A final SAR measurement has then been performed at 2cm: SAR 0,44 W/kg(1g) (see test report 171010-01.TR1). References ISED - RSS-102, Issue 5

3 MPE Calculation Method Equation according OET Bulleting 65, Edition 97-01 𝑃𝐺 𝑆= 4𝜋𝑅2 Where S: Power Density 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 Bluetooth Module FCC-ID: SQGBT900 IC-ID: 3147A-BT900 Item: Value: Notes: Worst case conducted power [mW] 7 Including tune-up tolerances Worst case conducted power [dBm] 8.4510 2.402-2.48 GHz Worst case antenna gain [dBi] -1.6 2.440 GHz, internal antenna Table 1- Bluetooth Module References: BT900-SA integration manual, see FCC submissions related to SQBT900 4 Radio Control Module RCM24G FCC-ID: 2AJ2A-RCM24G IC-ID: 1000B-RCM24G Item: Value: Note: Worst case conducted power [mW] / Worst case conducted power [dBm] 20.93 Including tune-up tolerances Worst case antenna gain [dBi] 2 Table 2 - RCM24 Module References: CETECOM_TR16-1-0190801T05a.pdf

5 Evaluation Refer to KDB447498 for simultaneous transmission MPE. The evaluation distance is 20cm according to manual. Radio Max. Duty Cycle Max. Antenna Power Density MPE Limit Device Conducted gain [dBi] [mW/cm²] @20cm [mW/cm²] Power [dBm] SQGBT900 8.5410 1 -1.6 0.001 1 2AJ2A- 20.93 1 2 0.039 1 RCM24G 2AJ2A- 20.93 1 2 0.039 1 RCM24G Table 3 - Reported Power Density The total power density under worst case condition at 20cm radius is reported 0.079 mW/cm². Therefore at a prediction distance of 20cm the device setup complies with MPE requirements. Completed by: ________________ Dr. Andreas Gäde-Tsangas Corporate Product Regulations & Standards (Product Regulatory Engineer) 2200 Mission College Blvd Santa Clara, CA 95054 USA Direct: +49 89 8955 6079 49


Document Created: 2017-11-28 13:43:58
Document Modified: 2017-11-28 13:43:58
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