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Federal Communications Commission
Before the
Federal Communications Commission
Washington, D.C. 20554
In the Matter of )
)
Sprint Corporation ) File No.:    EB-FIELDSCR-16-00023126 
217 Warren Street )
San Antonio, Texas78212 )
)
NOTICE OF VIOLATION
Released: December 19, 2017
By the Regional Director, Region Two, Enforcement Bureau:
1. This is a Notice of Violation (Notice) issued pursuant to Section 1.89 of the rules of the 
Federal Communications Commission (FCC or Commission)
1
 to Sprint Corporation (Sprint) in San 
Antonio, Texas.  Pursuant to Section 1.89(a) of the Commission’s rules, issuance of this Notice does not 
preclude the Enforcement Bureau (Bureau) from further action if warranted, including issuing a Notice of 
Apparent Liability for Forfeiture for the violation(s) noted herein.
2
2. The Bureau’s Dallas Field Office received a telephone call from the Federal Aviation 
Administration (FAA) in Fort Worth, Texas, requesting assistance in locating interference to an 
Airport Surveillance Radar (ASR-9) Weather Systems Processor (WSP) on 2710 MHz.  Based on the 
evidence gathered through the investigation, Sprint is in violation of the following rule:
a. 47 CFR § 27.53(n): “When an emission outside of the authorized bandwidth 
causes harmful interference, the Commission may, at its discretion, require 
greater attenuation than specified in this section.”  On April 3, 2017, the Agent 
located multiple Sprint cell sites operating from 2619.80 MHz to 2677.40 MHz 
which had a spurious signal on 2710.00 MHz.  On November 15, 2017, the 
Agent concluded by ON/OFF tests with Sprint that all the interference was 
caused by Sprint.  When Sprint ceased using the frequencies on the cell sites, 
including the cell sites identified on April 3, 2017, the interference ceased.
1
 47 CFR § 1.89.
2
 47 CFR § 1.89(a).  
Federal Communications Commission
2
3. Pursuant to Section 308(b) of the Communications Act of 1934, as amended,
3
 and 
Section 1.89 of the Rules, we seek additional information concerning the violations and any remedial 
actions taken.  Therefore, Sprint must submit a written statement concerning this matter within twenty 
(20) days of release of this Notice.  The response (i) must fully explain each violation, including all 
relevant surrounding facts and circumstances, (ii) must contain a statement of the specific action(s) taken 
to correct each violation and preclude recurrence, and (iii) must include a time line for completion of any 
pending corrective action(s).  The response must be complete in itself and must not be abbreviated by 
reference to other communications or answers to other notices.
4
  
4. All replies and documentation sent in response to this Notice should be marked with the 
File No. and NOV No. specified above, and mailed to the following address:
Federal Communications Commission
Office of Director – Region Two
P.O. Box 1493
Powder Springs, GA 30127
5. This Notice shall be sent to Sprint at its address of record.
6. The Privacy Act of 1974
5
 requires that we advise you that the Commission will use all 
relevant material information before it, including any information disclosed in your reply, to determine 
what, if any, enforcement action is required to ensure compliance.  
FEDERAL COMMUNICATIONS COMMISSION
       
Ronald D. Ramage
Regional Director
Region Two
Enforcement Bureau
3
 47 U.S.C. § 308(b).
4
 47 CFR § 1.89(c).
5
 P.L. 93-579, 5 U.S.C. § 552a(e)(3).