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The Frequencies To Be Used For The Transmission of Distress and Safety Information Under The GMDSS Are Shown in The Following Tables | PDF | Telecommunications Engineering | Telecommunications
CHAPTER 4 DISTRESS, EMERGENCY, AND SAFETY TRAFFIC PART I GMDSS (DISTRESS) - PDF Free Download
eCFR :: 47 CFR Part 2 Subpart B -- Allocation, Assignment, and Use of Radio Frequencies
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Maritime (Part 80) and Aviation (Part 87) Radio Services - Details