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FEDERAL COMMUNICATIONS COMMISSION
ENFORCEMENT BUREAU
South Central Region
San Juan Office
US Federal Building Room 762
San Juan, PR 00918-1731
787-766-5568
March 11th, 2016
Via Certified Mail:
Satell SJNet, Corp.
C/o Enzo Hernández
PO Box 194168
San Juan, PR 00919
NOTICE OF UNLICENSED OPERATION AND
NOTICE OF HARMFUL INTERFERENCE
Case Number:  EB-FIELDSCR-16-00020660
Document Number:     W2016326832680001
On January 28th, 2016, in response to information provided by the Federal Aviation Administration (FAA) 
that the Terminal Doppler Weather Radar (TDWR) that serves the San Juan International Airport had been 
receiving interference on or adjacent to 5.610 GHz, the FCC’s San Juan Office of the Enforcement Bureau 
(San Juan Office) conducted an investigation in the municipality of San Juan, Puerto Rico.  An agent from 
this Office confirmed by direction finding techniques that radio emissions centered on frequency 5.590 and 
5.630 GHz were emanating from a guyed radio tower located at the Camino Morcelo communications site. 
The tower was located at the GPS coordinates of 18º 18' 56.92" N 066º 03' 20.60" W, the location of two 
of your Unlicensed National Information Infrastructure (U-NII) Ubiquity devices, model Rocket 5AC Lite 
with FCC ID SWX-R5ACL.  When the center frequencies of your U-NII devices were moved away from 
5.590 and 5.630 GHz; and away from the TDWR operational band, the interference to the TDWR was 
mitigated.  
Radio stations must be licensed by the FCC pursuant to 47 U.S.C. § 301.  The only exception to this 
licensing requirement is for certain transmitters using or operating at a power level or mode of operation 
that complies with the standards established in Part 15 of the Commission’s rules.  Non-licensed operation 
pursuant to Part 15 of the FCC’s rules, however, is conditioned upon compliance with all applicable 
regulations in the subpart, 47 C.F.R. § 15.1(b).  All intentional radiators operating pursuant to Part 15 of 
the FCC’s rules must be certified for use as a Part 15 device, 47 C.F.R. § 15.201(b).
The Ubiquiti Rocket 5AC Lite access point devices are not authorized for use in the TDWR band without 
Dynamic Frequency Selection (DFS) nor are they authorized in point-to-point operation with high gain 
antennas in the TDWR operational band1.  Accordingly, your operation of the Ubiquiti Rocket 5AC Lite 
device on frequencies 5.590 GHz and 5.630 GHz does not comply with the requirements of Part 15 of the 
  
1 According to its equipment authorization, FCC ID SWX-R5ACL, the Ubiquiti Rocket 5 AC Lite device is 
authorized pursuant to Section 15.247 of the FCC’s Rules, 47 C.F.R. § 15.247, to operate only in the 5480 to 5715 
MHz band as an access point.
FCC’s rules and should therefore be licensed by the FCC.  The FCC has no record of a license being 
issued to you to operate a transmitter on 5.590 or 5.630 GHz at the Camino Morcelo communications site.
Thus, your operation was in violation of 47 U.S.C. § 301.
Non-licensed operation of a U-NII device is also subject to the condition that it must not cause harmful 
interference and, if harmful interference occurs, operation of the device must cease.  See 47 C.F.R. §§ 
15.5(c), 15.405.  Harmful interference is defined as “[a]ny emission, radiation or induction that endangers 
the functioning of a radio navigation service or of other safety services or seriously degrades, obstructs or 
repeatedly interrupts a radio communications service.”  47 C.F.R. § 15.3(m).    
You are hereby notified that your Ubiquiti Rocket 5AC Lite devices operating adjacent to 5.610 GHz were 
causing harmful interference to the TDWR for the San Juan International Airport and that your operation 
of these devices must not resume, until the interference can be resolved.  You are also hereby warned that 
operation of radio transmitting equipment without a valid radio station authorization, including non-
certified equipment or modified equipment which voids the certification, and/or operation of otherwise 
authorized equipment that continues to cause harmful interference after your receipt of this warning, 
constitutes a violation of the Federal laws cited above and could subject the operator to severe penalties, 
including, but not limited to, substantial monetary fines, in rem arrest action against the offending radio 
equipment, and criminal sanctions including imprisonment.  (See 47 U.S.C. §§ 401, 501, 503 and 510.)
UNLICENSED OPERATION ON FREQUENCY 5.590 and 5.630 GHZ MUST NOT RESUME.  
NONLICENSED OPERATION OF A U-NII DEVICE MAY NOT RESUME UNLESS YOU ARE 
IN FULL COMPLIANCE WITH PART 15 OF THE FCC’S RULES AND UNTIL YOU RESOLVE 
THE HARMFUL INTERFERENCE.
You have ten (10) days from the date of this notice to respond with any evidence that your transmitter is 
not the source of the interference to the TDWR.  Your response should describe the steps you are planning 
to take to eliminate interference to the TDWR serving the San Juan International Airport.  Your response 
should be sent to the address in the letterhead and reference the listed case and document number. Under 
the Privacy Act of 1974, 5 U.S.C. § 552a(e)(3), we are informing you that the Commission’s staff will use 
all relevant material information before it to determine what, if any, enforcement action is required to 
ensure your compliance with FCC Rules.  This will include any information that you disclose in your 
reply.
You may contact this office if you have any questions.
Reuben Jusino
Resident Agent
San Juan Office
Attachments:
Excerpts from the Communications Act of 1934, As Amended
Enforcement Bureau, "Inspection Fact Sheet", July 2003