RF Expo Info

FCC ID: XEU2703240

RF Exposure Info

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FCCID_1169070

Jason Heimer Program Manager Government Systems Suface Solutions 400 Collins Road NE Cedar Rapids, IA 52498 319.295.0521 JJHeimer@rockwellcollins.com July 10, 2009 To Whom It May Concern Subject: RF Exposure Applicant: Rockwell Collins FCC ID: XEU2703240 Dear Sir/Madam: Below is the RF Exposure warning for the above Equipment. WARNING: To satisfy FCC RF exposure requirements for mobile transmitting devices, a separation distance of 10 in or more should be maintained between the antenna of this device and persons during device operation. To ensure compliance, operations at closer than this distance is not recommended. The antenna used for this transmitter must not be co-located in conjunction with any other antenna or transmitter Sincerely, Jason J. Heimer Program Manager Rockwell Collins

FCC PARTS 2 & 90, SUBPART I, NON-BROADCAST RADIO TRANSCEIVERS Page 8 VRS, Model 270-3240-020 FCC ID: XEU2703240 5.5. RF EXPOSURE REQUIREMENTS [§§ 1.1310 & 2.1091] 5.5.1. Limits § 1.1310: The criteria listed in the following table shall be used to evaluate the environmental impact of human exposure to radio-frequency (RF) radiation as specified in 1.1307(b). LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) Frequency Range Electric Field Strength Magnetic Field Strength Power Density (mW/cm2) Average Time (MHz) (V/m) (A/m) (minutes) (A) Limits for Occupational/Control Exposures 30-300 61.4 0.163 1.0 6 300-1500 -- -- f/300 6 (B) Limits for General Population/Uncontrolled Exposure 30-300 27.5 0.073 0.2 30 300-1500 -- -- f/1500 30 Note: f is frequency in MHz 5.5.2. Method of Measurements Calculation Method of RF Safety Distance: PG EIRP S= = 4π ⋅ r 2 4π ⋅ r 2 Where, P: power input to the antenna in mW EIRP: Equivalent (effective) isotropic radiated power. S: power density mW/cm2 G: numeric gain of antenna relative to isotropic radiator r: distance to centre of radiation in cm PG EIRP r= = 4π ⋅ S 4π ⋅ S FCC radio frequency exposure limits may be exceeded at distances closer than r cm from the antenna of this device. ULTRATECH GROUP OF LABS File #: ETST-001F90 3000 Bristol Circle, Oakville, Ontario, Canada L6H 6G4 August 18, 2009 Tel. #: 905-829-1570, Fax. #: 905-829-8050, Email: vic@ultratech-labs.com, Website: http://www.ultratech-labs.com All test results contained in this engineering test report are traceable to National Institute of Standards and Technology (NIST)

FCC PARTS 2 & 90, SUBPART I, NON-BROADCAST RADIO TRANSCEIVERS Page 9 VRS, Model 270-3240-020 FCC ID: XEU2703240 5.5.3. Evaluation of RF Exposure Compliance Requirements Maximum RF Power conducted, Pconducted[dBm] = 32.91 at 769.5 MHz Maximum Antenna Gain, G[dBi] = 3 Maximum EIRP, PEIRP[dBm] = 35.91 MPE Limit for Occupational/Controlled Exposure, Scontrolled[mW/cm2] = 769.5/300 = 2.57 MPE Limit for General Population/Uncontrolled Exposure, Suncontrolled[mW/cm2] = 769.5/1500 = 0.51 Calculated RF Safety Distance for Occupational/Controlled Exposure, rsafety_controlled[cm] = 11.00 Calculated RF Safety Distance for General Population/Uncontrolled Exposure, rsafety_uncontrolled[cm] = 24.59 ULTRATECH GROUP OF LABS File #: ETST-001F90 3000 Bristol Circle, Oakville, Ontario, Canada L6H 6G4 August 18, 2009 Tel. #: 905-829-1570, Fax. #: 905-829-8050, Email: vic@ultratech-labs.com, Website: http://www.ultratech-labs.com All test results contained in this engineering test report are traceable to National Institute of Standards and Technology (NIST)


Document Created: 2009-09-08 11:47:56
Document Modified: 2009-09-08 11:47:56
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