TZUTC: -0500   
   MSGID: 397.fidonet-ls_arrl@1:2320/33 28a4ae05   
   PID: Synchronet 3.20a-Win32 master/a59d7d36d Apr 13 2023 MSC 1929   
   TID: SBBSecho 3.20-Win32 master/a59d7d36d Apr 13 2023 MSC 1929   
   BBSID: TBOLT   
   CHRS: ASCII 1   
   From the Feb. 19, 2019 ARRL Contest E-Letter   
      
   WORD TO THE WISE   
      
   Key Clicks   
      
   Key Clicks are caused by the undesirable and unwanted widening of a   
   CW signal, due to energy in the signal's sidebands. Contributing   
   factors include the shape of the keying waveform, too-short rise and   
   fall times of the transmitted signal, or variation in the carrier   
   oscillator frequency.   
      
   Key clicks can sound like thumps or clicks to a receiver tuned with a   
   few kHz of the transmitter frequency. Unscrupulous operators have used   
   key clicks to their advantage by making adjacent frequencies undesirable   
   to use, seeking to gain an unfair advantage in crowded contest   
   conditions. This is against the rules of most contests.   
      
   As a side note, it can also get you a notice of violation from either   
   an OO (Official Observer, soon to be Virtual Monitor (VM)), or from the   
   FCC.   
   --- SBBSecho 3.20-Win32   
    * Origin: The Thunderbolt BBS - Little Rock, Arkansas (1:2320/33)   
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