Description of Antenna Height

0088-EX-ST-2018 Text Documents

Fortem Technologies, Inc.

2018-01-17ELS_203397

Exhibit 1
PUBLIC INTEREST STATEMENT
1. Introduction
By the instant application (“Application”), Fortem Technologies, Inc. (“Fortem”) requests that the
Commission grant Special Temporary Authority (“STA”) to permit Fortem to operate the facilities (the
“Facilities”) specified in the instant application from 02/15/18 to – 08/15/18.
2. Purpose and Nature of the Operation
Fortem Technologies specializes in worldwide real-time AI-enabled airspace security and safety.
This experimental STA is requested is to test the complete DARPA MFP Phase 1 system with the
appropriate 2-way digital datalink used in the final system. When airborne mobile, the facility will be
mounted on an unmanned aircraft flying at a maximum altitude of 400 ft (122 m) AGL and within visual
line-of-sight of the operator.
This activity is necessary to test a prototype system being developed for the DARPA Mobile Force
Protection (MFP) Phase 1 contract, which requires utilization of non-ISM frequency bands.

Contract Information is as follows:
Agency: DARPA Mobile Force Protection (MFP) Phase I
Contract No. : HR0011-17-9-0017
Government POC: Jean-Charles (JC) Lede
703-526-2844, jc.lede@darpa.mil

The testing will be directed by the Fortem Technologies engineering team with technical support from the
datalink manufacturer, Microhard, as necessary.
The digital datalink can operate with 8 different modulations, including BPSK, QPSK, and QAM, and
different data rates, as follows:
BPSK_1/2
QPSK_1/2
QPSK_3/4
16QAM_1/2
16QAM_3/4
64QAM_2/3
64QAM_3/4
64QAM_5/6
The data rates and modulation schemes are divided into 3 modes with maximum emission bandwidths of
approximately 2, 4, and 8 MHz. The three emission designators identified represent the maximum emission
bandwidths for these modes using 64QAM_5/6 modulation.
The digital datalink can operate on any of 53-55 channels of 1-MHz spacing within the frequency range of
1812 MHz to 1868 MHz. The requested action frequency range represents the maximum usable emission
bandwidth when operated on the lowest and highest available channels.
The fixed ground station and the mobile airborne station have the same performance specifications
including modulating schemes, bandwidth, and transmitter power, 1 Watt. The ground station will use a
higher-gain antenna with a gain of 8 dBi with an estimated transmission line loss of 2 dB. The airborne
station will use a lower-gain antenna of 3 dBi with an estimated transmission line loss of 1 dB. Both
antennas have omnidirectional radiation patterns in azimuth. One ground station will communicate with up
to 4 airborne stations. Each airborne station transmits information to the ground station forming a two-way
datalink. All stations (ground and airborne) will be operating simultaneously at each location. The group of
stations (a total of 5 stations) will always be at the same general location.
3. Interference Mitigation


Fortem is well aware of its obligations under Part 5 of the Commission’s rules to avoid interference to co-
channel licensees in non-experimental services, and will take all steps to ensure compliance with this
obligation. With respect to interference mitigation, Fortem Technologies understands that FAA (or other
government stakeholders) may restrict radiation to certain azimuth and/or elevation sectors in order to
ensure that the proposed Facilities do not pose a threat of interference to adjacent emitters. Accordingly, this
is to confirm that Fortem Technologies stands ready to work with FAA to identify any reasonably necessary
restrictions for the system.

4. Stop Buzzer
Fortem Technologies advises that the following will be available by wireless telephone and will act as “stop
buzzers” if any issues regarding interference arise during testing:
Primary: Rick Wilson; Mobile: (801) 244-4837
Secondary: Mikko Valimaki ; Mobile: (801) 376-7975
For the foregoing reasons, Fortem Technologies respectfully submits that approval of this Application is in
the public interest, convenience and necessity.



Document Created: 2019-04-25 23:15:26
Document Modified: 2019-04-25 23:15:26

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