02/06/2018             ***** U N C L A S S I F I E D *****





                          Radio Frequency Authorization



    This Authorization is granted pursuant to Chapter 1 Part 1.1 Section 6.i of the NTIA

    Manual by authority of the US National Science Foundation.

    This Authorization expires on:  January 19, 2023.  For continued use of this equipment,

    YOU MUST SUBMIT a request to your Frequency Manager by October 21, 2022.





    Serial Number        FOI    MSD    BUR    NET      RVD      AUS        EXD

    NSF 130008                         NAIC            180205   J1388468   230119



    FRQ           BIN  TME   SPD    STC       Bandwidth         Emission   Power

    5100 kHz                        XR        100.00 kHz        A0N        600 kW

                                    XR        100.00 kHz        F0N        600 kW

                                    XR        100.00 kHz        P0N        600 kW



    XAL, XSC                        XRC       XLA, XLG          XCL        XAP    XAZ

    ARECIBO, PR                               182037N0664511W



    XAD

    23G



    RAL, RSC                        RRC       RLA, RLG          ACL        RAP    RAZ

    ARECIBO, PR                     I,NTIA-U  182037N0664511W



    RAD                             Remarks

    23G                             *EQT,C,CCP OT139FPS118

                                    *POC,ANGEL VAZQUEZ,7878782612,130318

                                    *EQR,U,NSF CUSTOM



    Restrictions (NTS, *NTS, SUP)

    S070 - SUBJECT TO IMMEDIATE CANCELLATION UPON NOTICE FROM FCC.



    Supplementary Details -  EXPERIMENTAL HF IONOSPHERIC HEATING FACILITY USED FOR THE STUDY

    OF PLASMA PHYSICS IN THE EARTHS IONOSPHERE. EXPERIMENTS ARE CONDUCTED INFREQUENTLY,

    USUALLY A FEW TIMES PER YEAR. CHANNEL WILL BE MONITORED BEFORE TRANSMITTING TO AVOID

    INTERFERENCE. ANTENNA IS A 305 M DISH THAT  POINTS STRAIGHT UP AT ALL TIMES. ANTENNA

    BEAMWIDTH LESS THAN 10 DEG.  EXPERIMENTS SUPPORT IMPROVEMENTS IN SCIENCE OF RADIO

    PROPAGATION. EXPERIMENTAL HF IONOSPHERIC HEATING FACILITY USED FOR THE STUDY OF PLASMA

    PHYSICS IN THE EARTHS IONOSPHERE. EXPERIMENTS ARE CONDUCTED INFREQUENTLY, USUALLY A FEW

    TIMES PER YEAR. CHANNEL WILL BE MONITORED BEFORE TRANSMITTING TO AVOID INTERFERENCE.

    ANTENNA IS A 305 M DISH THAT ANTENNA BEAMWIDTH LESS THAN 15 DEG. EXPERIMENTS SUPPORT

    IMPROVEMENTS IN SCIENCE OF RADIO PROPAGATION. CURRENTLY POINTS AT ZENITH. WILL POINT

    WITHIN 45 DEG OF ZENITH



























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      02/06/2018             ***** U N C L A S S I F I E D *****





    SPECIAL HANDLING INSTRUCTIONS



    None.













































































































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