Attachment RadHaz

This document pretains to SES-LIC-20190715-00921 for License on a Satellite Earth Station filing.

IBFS_SESLIC2019071500921_1794354

EXHIBIT A (Page 1 of 3) RADIATION HAZARD STUDY This radiation hazard study describes the R.F. radiation environment of the permanent fixed Ku-band R/T earth station terminals operated by Calvary Chapel Costa Mesa, Inc. This fixed Ku-band R/T earth station terminals are to be located and operated at a lattitude of 33d - 41m - 58s North and a longitude of 117d - 54m - 32s West, in Santa Ana, CA. This study is done to comply with the requirements of Section 1.1307(b) of the rules of the Federal Communications Commission. All calculations conform to the proceedures presented in OET Bulletin No. 65 for aperature antennas. Transmit antenna: Prodelin 2.4 meter KU-band Antenna Diameter D 2.4. m Antenna Efficency  67. % Transmitter: 8 watt output flange SSPA, operated at 100% power Transmit Power P 8. watt. 100. % mw watt P = 8 watt 1000 at 14.0 GHz at 14.5 GHz Antenna Gain G1 49.10 G2 49.30 Wavelength 1 2.14285. cm 2 2.06896. cm Calculations for the Near Field (Fresnel Region) Extent of the Near Field 2 2 D D R n1 R n2 4.  1 4.  2 R n1 = 67.2 m R n2 = 69.6 m Maximum Near Field Power Density 16. . P Sn 2 . D mw S n = 0.474 2 cm

Calculations for the Far Field (Fraunhofer Region) (Page 2 of 3) at 14.0 GHz at 14.5 GHz 2 2 0.6. D 0.6. D Distance to Far Field R f1 R f2 1 2 R f1 = 161.281 m R f2 = 167.04 m G1 G2 10 10 Absolute Gain of Antenna G a1 10 G a2 10 P. G a1 P. G a2 Maximum Far Field Power S f1 S f2 2 2 Density 4. . R f1 4. . R f2 mw mw S f1 = 0.199 S f2 = 0.194 2 2 cm cm Calculations for the Transition Zone The farthest point in the near field is the beginning of the transition zone - R t1 R n2 R t1 = 69.6 m The end of the Transition Zone is the beginning of the Far Field - R t2 R f2 R t2 = 167.04 m Beginning End S n. R n2 S n. R n2 Transition Zone Power Density S t1 S t2 R t1 R t2 mw mw S t1 = 0.474 S t2 = 0.197 2 2 cm cm

Calculations at the Reflector Surface: (Page 3 of 3) 2 D Area of Reflector A . 2 2 A = 4.524 m P Power Density at the S ref 2. Reflector Surface A mw S ref = 0.354 2 cm Calculations between the Antenna and the Ground: Power Density between P S ga Antenna and Ground A mw S ga = 0.177 2 cm Conclusions The power densities in the Near Field, Far Field, Transition Zone, at the Surface of the Reflector, and between the Reflector and the Ground are all below the allowable limit. Nowhere do they exceed the level of 5 mw/cm2 as listed in OET Bulletin No. 65. Thus, this transmit earth terminal meets FCC requirements for human exposure to radio frequency energy.

EXHIBIT B (Page 1 of 2) ENVIRONMENTAL IMPACT STATEMENT Transmit/Receive In regard to Section 1.1307(a) of the Commission's rules: This site is not in a designated wilderness area or wildlife preserve; it does not threaten endangered species or critical habitats; nor does it affect sites, structures, or habitats which are significant in American history, architecture, archeology, engineering or culture that are listed or are eligible for listing in the National Registry of Historic Places; it does not affect Indian religious sites or flood plains; nor does it cause significant change in wetland fill, deforestation, or water diversion. In regard to section 1.1307(b) of the Commission's rules: We have prepared the calculations of radio frequency radiation for this transmitter and antenna combination, under the operating conditions specified in this application, with these results: Region Radiation level Hazard assessment (mw/cm2) ________ ______________ _________________ Near field 0.474 Complies with guidelines Far field 0.199 Complies with guidelines Transition zone 0.474 Complies with guidelines At reflector surface 0.354 Complies with guidelines Between the rim of the 0.177 Complies with guidelines antenna and the ground

(Page 2 of 2) Conclusions: Based on the study, which is summarized above, we conclude that in the regions of concern, the radiation level complies with the guidance; the level is less than 5 milliwatts per square centimeter. Accordingly, this action does not have a significant environmental impact as described in the Commission's rules and does not require the preparation of an environmental assessment. Michael Kirk (name) Satellite Engineer (title or position) 07/14/19 (date)

EXHIBIT C (Page 1 of 1) FAA INFORMATION The proposed 2.4 meter Ku band R/T antenna, which is the subject of this application, is a fixed earth station that will be operated from the ground. The maximum height of this antenna will be about 5 meters above the ground. Therefore since the proposed antenna does not extend more than 6 meters above the ground, notice to the FAA is not required pursuant to Section 17.4 of the Commission's rules.


Document Created: 2019-07-15 01:00:26
Document Modified: 2019-07-15 01:00:26
© 2025 FCC.report
This site is not affiliated with or endorsed by the FCC