Narrative Explanation of Operation and Nature of Applicant

0184-EX-CM-2019 Text Documents

Persistent Systems, LLC

2019-07-09ELS_233640

Persistent Systems, LLC
Form 442 Experimental License Modification Application
WJ2XTP
File No. 0184-EX-CM-2019

    NARRATIVE EXPLANATION OF OPERATION AND NATURE OF APPLICANT

Persistent Systems, LLC wishes to modify by this application a granted Experimental License,
WJ2XTP (0518-EX-CN-2018) to add a new antenna with the same geographic coordinates but
with a higher power level in the bands 2200-2290 MHz and 4400-4800 MHz, so as to permit
sector antenna tests at New York, NY and within 32 kilometers of 303 Fifth Avenue, New York
City.

Persistent is an American manufacturer of high speed, secure data networking equipment for
both military/defense and industrial, non-government applications. Principally, Persistent
manufactures scalable mobile networking systems based on Wave Relay MANET (Mobile Ad
Hoc Networking) Technology. Persistent’s products permit voice, video, and situational
awareness to mobile users with no reliance on fixed infrastructure. For more than a decade,
Persistent has been a pioneer in developing advanced MANET technology and commercializing
it in the Defense and Industrial sectors.

The purpose of this modification application is to permit continued research and development
and testing of products in urbanized areas. The ongoing R&D activities necessitate a longer
period of testing and deployment in the New York City area.

One purpose of this modification application is to permit research and development of Sector
Antenna systems for Persistent’s products for deployment at military and other Federal facilities
on Federal Government S-Band and Lower C-Band frequencies. Specifically, the Sector
Antennas that are being developed now are under development for both the United States Air
Force and for the Department of Homeland Security (and specifically for Customs and Border
Protection). Entirely terrestrial operation is proposed to be conducted with respect to radio
modules in the band 2200-2290 MHz which will be for MANET systems and component
products for military and DHS deployment only, using the sector antennas under test. The center
frequencies 2277.00 MHz and 4700 MHz (with a 20 megahertz occupied bandwidth emission)
are the preferred frequencies within the band 2200-2290 MHz to provide a consistent benchmark
for testing and evaluation in this environment. Those are not necessarily the frequencies or bands
on which the agencies will ultimately use the Sector Antennas. However, the bandwidth of the
sector antennas under test include the entirety of 2200-2290 MHz and 4400-4800 MHz.
Frequency changes can be conducted remotely should the need to do so arise to avoid
interference. All operation will cease immediately in case of any reported interference and not
resume until the complaint is resolved to the reasonable satisfaction of the complainant.

The stop buzzer contact for this operation continues to be Mr. Ben Wring, at 646-627-8214.



Document Created: 2019-07-09 12:23:13
Document Modified: 2019-07-09 12:23:13

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