2670: Morse Code Codes Apr 9, 2022

Other than Q-codes, along with the less common Z-codes and X-codes, Morse code uses lots of standard abbreviations. Some of these will be linked to the words they abbreviate, like BN (all between); C (correct) or FWD (forward) to name a few, plenty of others are simply usefully short, like CQD (All stations distress) or K (invitation to transmit) but have no relation to the meaning. Others still use a combination, like WX (weather) or even just use numbers 73 (best regards). These sorts of official codes were accompanied by many more unofficial codes to speed up communication.