R/T Communications By LT Fullan

Sound Powered Phones Communicating on them: –Calling Stationed called Station calling Message –Reply Station replying Aye

Uses Bridge-Bridge Fleet Tac Message Traffic Command Nets –Admin –Tactical –Plain –Encrypted

Definitions Guard - continuous receiver watch w/complete log. Station with the guard has the responsibility to send and reply Cover - Continuous receiver watch with complete log. Reply when called Copy -continuous receiver watch with complete log. Listen - continuous receiver watch. Just listens to the net

Secure vs. Nonsecure Secure - entire signal is encrypted Nonsecure - plain radio –use call signs, code books and authentication procedures

EMCON Emission control radio signals can be intercepted short, concise messages

Call Signs Two letters and 1 number Change daily at Z Individual or Collective call up

Prowords Roger – received the last transmission Over – End of transmission, respond Out – End of transmission, do not respond Wait – must pause for a few seconds to get the information Wait, out – pause longer than a few seconds Break – 2 uses

Establishing a Net Net control station is assigned All stations are called and authenticated Each station is called back when heard

Messages Immediate Execute –C3F this is A2W, turn port 090, ISA, turn port 090, stby,…, execute, over Delay Execute –C3F this is A2W, XTF, turn port 090, over Non-executive –C3F this is A2W, M Corpen is 359

Beadwindow & Gingerbread Beadwindow –Used to tell transmitting station they messed up –Only response is roger out Gingerbread –Used when you think there is an intruder on the net

Naval Messages Routine - 6 hrs or less to respond Priority - 3 hours or less Immediate - 30 minutes or less Flash - ASAP, < 10 minutes

Summary Uses of radio telephone Definitions Secure vs. Nonsecure Beadwindow/Gingerbread Establishing a NET Naval Messages