Attachment E960160 RAD HAD

This document pretains to SES-LIC-20080118-00074 for License on a Satellite Earth Station filing.

IBFS_SESLIC2008011800074_623482

JUAN G PADIN, P.E. PO BOX 142755 ARECIBO, P.R. 00614 USA (787) 383-9905 Introduction On February 20, 2008, Juan G Padín, P.E., Wireless Consulting Engineer conducted a site survey of a satellite earth station located in Road #3, km 76.6, Humacao, Puerto Rico. Coordinates (NAD83) 18°-09’-05.0”N, 065°-47’-19.0”W. Site elevation 1.2m. Transmitter frequency 5925.000-6425.000 mhz. Different areas were observed according to FCC Bulleting OET 65 “Evaluating Compliance with Federal Communications Commission Guidelines for Human Exposure to Radiofrequency Electromagnetic Field”. The site survey recorded the Non- Ionizing Electromagnetic Radiation levels surrounding the antenna and transmitter location. Procedure The measurements were taken in the antenna structure location area. Three different measurements intervals were recorded, inside the concrete pad, 3.04 (10 ft) and 9.14 meters (30 ft) from the center of the concrete pad. See figure 1 for details of the measured points. The power levels recorded were taken with Narda Model 8718 Electromagnetic Survey Meter, SN 04064, Calibration expiration date: October 11, 2008. Isotropic Electric Field Probe Model 8721D SN 02027. Calibration expiration date August, 2008. For this analysis the Maximum Permissible Exposure (MPE) for Controlled and Uncontrolled Environments parameters were used as the base for comparative analysis according to ANSI/IEEE standards. As defined on the FCC Report and Order 96-326 released on August 1, 1996. The limits for maximum permissible exposure (MPE) for general population / uncontrolled exposure are defined in the following tables: 1

JUAN G PADIN, P.E. PO BOX 142755 ARECIBO, P.R. 00614 USA (787) 383-9905 Table 1 – General Population / Uncontrolled Exposure Frequency Range Power Density (S) (Mhz) (mW/cm2) 0.3 – 1.342 100 1.342 - 30 180/f2 30 – 300 0.2 300 – 1500 F(mhz)/1500 1500 – 100,000 1.0 Table 2 – Occupational / Controlled Exposure Frequency Range Power Density (S) (Mhz) (mW/cm2) 0.3 – 1.342 100 1.342 - 30 900/f2 30 – 300 1.0 300 – 1500 F(mhz)/300 1500 – 100,000 5.0 The transmission frequency from the facilities evaluated (5925.000-6425.000 mhz) fall into the 1,500 to 100,000 mhz band. The maximum Non Ionizing Electromagnetic Radiation limit for General Population / Uncontrolled Exposure is 1.0 mW/cm2, and for Occupational / Controlled Exposure is 5.0 mW/cm2. The transmission facilities are in an Occupational Controlled Area. Figure 1 shows a site plan of the antenna structure location and the different points of measurements. The legend shows the different readings recorded at the site. The maximum level recorded (see figure 1, point 8) was 0.0912 mW/cm2. 2

JUAN G PADIN, P.E. PO BOX 142755 ARECIBO, P.R. 00614 USA (787) 383-9905 Conclusions The electromagnetic radiation measurements performed at Ultracom Station in Humacao, PR do not exceed the maximum permissible exposure levels for a controlled and uncontrolled environment. The Ultracom facilities are not considered an uncontrolled environment since access to the premises is limited to authorized personnel with knowledge that radio frequency radiation is present. It can be concluded that no radiation hazard exists on the Ultracom, Humacao, PR facilities. Study performed by: Juan G Padin, P.E. 3

14 13 15 5 6 4 7 8 10 16 9 1 3 2 12 17 11 NOT DRAWN TO SCALE Survey Measurements 1- 0.0091 mW/cm2 09- 0.0714 mW/cm2 17- 0.0009 mW/cm2 2- 0.0031 mW/cm2 10- 0.0211 mW/cm2 3- 0.0085 mW/cm2 11- 0.0000 mW/cm2 4- 0.0016 mW/cm2 12- 0.0000 mW/cm2 Ultracom Site Survey 5- 0.0078 mW/cm2 13- 0.0001 mW/cm2 6- 0.0837 mW/cm2 14- 0.0002 mW/cm2 7- 0.0806 mW/cm2 15- 0.0006 mW/cm2 8- 0.0912 mW/cm2 16- 0.0009 mW/cm2 4

Figure 1 5


Document Created: 2008-02-25 11:56:47
Document Modified: 2008-02-25 11:56:47
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