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CW – Key City Amateur Radio Club (KCARC)
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Ham Radio - QRP: CW Abbreviations
Ham Radio - QRP: CW Abbreviations
Morse code - Wikipedia
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Useful Morse Code Abbreviations : r/coolguides
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Morse Abbreviations
Ham Radio - QRP: CW Abbreviations
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HAM Radio Abbreviations: Q Signals and CW Abbreviations and Beyond