Revised MPE Calculation

FCC ID: AJK8222259

RF Exposure Info

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FCCID_2813055

849 NW STATE ROAD 45 NEWBERRY, FL 32669 USA PH: 888.472.2424 OR 352.472.5500 FAX: 352.472.2030 EMAIL: INFO@TIMCOENGR.COM HTTP://WWW.TIMCOENGR.COM RF Exposure Evaluation Report APPLICANT ROCKWELL COLLINS AIR TRANSPORT SYSTEMS 1300 WILSON BLVD. SUITE 200 ARLINGTON VA 22209 USA FCC ID AJK8222259 MODEL NUMBER RTA-4218 PRODUCT WEATHER RADAR DESCRIPTION STANDARD APPLIED CFR 47 Part 2.1091 PREPARED BY Cory Leverett We, TIMCO ENGINEERING, INC. would like to declare that the device has been evaluated in accordance with 47 CFR Part 2.1091 and meets the requirements. The attached report shall not be reproduced except in full without the written approval of TIMCO ENGINEERING, INC.

GENERAL REMARKS Attestations This equipment has been evaluated in accordance with the standards identified in this report. To the best of my knowledge and belief, these evaluations were performed using the procedures described in this report. I attest that the necessary evaluations were made, under my supervision, at: Timco Engineering Inc. 849 NW State Road 45 Newberry, FL 32669 Authorized Signatory Name: Cory Leverett Engineering Project Manager Date: 11/12/2015 Applicant: ROCKWELL COLLINS FCC ID: AJK8222259 Report: R\ROCKWELL_AJK\2061UT15\2061UT15TestReport.docxt Page 2 of 4

RF Exposure Requirements General information Device type: WEATHER RADAR Devices that operate under Part 87 of this chapter are subject to RF exposure evaluation prior to equipment authorization or use. Antenna The manufacturer does not specify an antenna, but a typical antenna has a gain of 0 dBi. Configuration Antenna p/n Type Max. Gain (dBi) Fixed mounted Any omni 0 Operating confiquration and exposure conditions: The conducted output power is shown in the table below. Typical use qualifies for a maximum duty cycle factor of 100%. Operation: A typical installation consists of an antenna system with a 10 meter coaxial cable of the type RG 213/ U type which has a loss as follows; Nom. Attenuation for RG 213/U: Frequency Attenuation per 100ft. MHz dB 1 .27 10 .55 50 100 200 400 700 900 1000 4000 MPE Calculation: The minimum separation distance is calculated as follows: (30xPxG : E E(V m) = ———— Power dersity. P,(mIW /em ) = d e 3770

The limit for general uncontrolled exposure environment is shown in FCC rule Part 1.11310, Table 1. Minimum Separation Distance for Mobile or Fixed Devices Controlled Exposure Insert values in yellow highlighted boxes to determine Minimum Separation Distance Max Power 50 W equals Max Power 50000 mW Duty Cycle 2% equals Duty Factor 0.02 numeric Antenna Gain 30.3 dBi equals Gain numeric 1071.519305 numeric Coax Loss 0 dB Gain - Coax Loss 1071.519305 numeric 2 Power Density 5 mW/cm Enter power Density from the chart to the right Rule Part 1.1310, Table 1 (A) Frequency 9476.9 MHz Freq range Power density Enter this value 2 2 MHz mW/cm mW/cm 0.3 - 3 100 100 2 3 - 30 900/f 0.0 30-300 1 1 300-1,500 f/300 31.6 1,500-100,000 5 5 f = frequency in MHz Minimum Separation Distance 131 cm 1.31 m Minimum Seperation in Inches 51.37412 Inches Applicant: ROCKWELL COLLINS FCC ID: AJK8222259 Report: R\ROCKWELL_AJK\2061UT15\2061UT15TestReport.docx


Document Created: 2019-10-11 11:13:30
Document Modified: 2019-10-11 11:13:30
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