Experimental Description

0223-EX-CN-2016 Text Documents

ViaSat, Inc.

2016-11-16ELS_184599

About ViaSat

    ViaSat is in the business to connect the world. As a global broadband services and technology
company, we are connecting international communities to the internet by offering residential internet
service; enabling passengers and operations crews to stream high-bandwidth media, applications, and
content when traveling globally on commercial, business or government aircraft and maritime vessels;
and empowering international warfighters on the front lines of battle with real-time, secure internet-based
intelligence, surveillance, and reconnaissance for high-requirement missions. We deliver and protect
information – when and where it is needed most – with our trusted communications ground systems,
infrastructure, and services.

Purpose

    In addition to providing broadband internet service, ViaSat also design and manufactures a variety of
antennas. The purpose of this request for an experimental license is to test the performance of antennas
and ensure they meet the design specification.

Description of Experiment

    The proposed testing facility consists of a reference RF signal source antenna (“Reference Signal
Antenna”) that will be located at 3095 Satellite Boulevard, Building 800, Duluth Georgia (37°57’48” N,
84°6’51” W). The Reference Signal Antenna will be roof-mounted approximately 1.25 miles from the
manufacturing site (33°57’47’N, 84°05’46”W), where the test antennas will be located. The Reference
Signal Antenna will be directional and will be pointed approximately due east, at the manufacturing site.
Due to the height of the roof mount and the ground profile, the elevation angle of the Reference Signal
Antenna will be –1.2 degrees. The beamwidth of the Reference Signal Antenna at 18000 MHz is 9°.

    The Reference Signal Antenna will consist of a pyramidal horn antenna manufactured by Scientific
Atlanta, model 12A-18, fitted with an Agilent transmitter, model number N5183A or equivalent, which
will generate a non-modulated continuous wave (“CW”) test signal at a frequency between 18000 –
21200 MHz and 25500 - 26500 MHz with emission designator N0N. The Reference Signal Antenna is
intended to simulate a satellite, and thus, will transmit at the very low radio frequency levels that are
normally received from a satellite: about 1.3 mW and , below the 1 mW/cm2 limit for persons in the
General Population/Uncontrolled environment specified in Office of Engineering and Technology
(“OET”) Bulletin No. 65.

    In each test, the Reference Signal Antenna will transmit the CW test signal to the test
antenna. Although the antennas being tested will have both transmit and receive capabilities,
performance of transmit capabilities can adequately be tested by observing the receive
performance in the transmit band because of the reciprocal nature of the performance in each of
the transmit and receive bands. Therefore, ViaSat requests experimental license authority for
only the Reference Signal Antenna.

   The figure below shows the location of the transmitter and the receive test antenna located in
Duluth, Georgia.


Interference to Other Services

         Operation of the Reference Signal Antenna as proposed by this application is not likely to cause
interference to any other licensed services or systems. As described above, the CW test signal will be
emitted at extremely low power levels. Additionally, due to the narrow beam-width and the horizontal
orientation of the CW test signal, the potential for interference is remote.



RF Radiation Compliance

        The operation of these user terminals will be in full compliance with the Commission’s radio
frequency (RF) exposure guidelines, pursuant to Table 1 of Section 1.1307(b)(1) which states routine
environment evaluation is not required for Experimental Radio Services if the power is less than 100
Watts ERP. The maximum power from the terminal will be 0.24 W ERP. Additionally, the terminal will
be secured from access by the general public and will be operated by experienced test personnel.



Document Created: 2016-11-16 15:37:43
Document Modified: 2016-11-16 15:37:43

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