Approved Marine Radio Examiners (ARX) available for public work Radio Spectrum Management’s Register of Maritime Radio Operator Examiners are approved for the Maritime Restricted Radiotelephone Operator’s Certificate (MRROC).     Information for Examiners eNautical thanks all approved marine radio examiners for undertaking the assessment of MRROC candidates. An an ARX, you may be contacted from time to … Continue reading Marine Radio Examiners