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   AMATEUR_RADIO      Ham radio for when Armageddon strikes      2,531 messages   

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   Message 1,746 of 2,531   
   Richard Menedetter to Ed Vance   
   Ham Radio Digital Modes   
   07 Nov 17 11:05:14   
   
   Hi Ed!   
      
   06 Nov 2017 19:55, from Ed Vance -> Daryl Stout:   
      
    EV> I watch Television using a Digital TV Convertor box.   
    EV> While I was watching a show I noticed the image froze for a moment and   
    EV> I wasn't able to hear any sound until the freeze ended and thought   
    EV> about You using D-STAR, VOIP and maybe other Digital Modes for Amateur   
    EV> Radio.   
      
   Correct.   
   That is indeed a characteristic of digital encoding.   
   You have a perfect signal until the error correction is not able to cope with   
   the bit error rate.   
   At that point you will have audio/video artefacts or even small outages   
   (depending on the conditions).   
      
   On an analog signal you will hear/see degradation much earlier, but you will   
   have some form of very staticy signal that you may be able to decode when you   
   have very bad conditions.   
   On digital on those conditions you will have no service.   
      
   CU, Ricsi   
      
   --- GoldED+/LNX   
    * Origin: ?troffeeriuqertahtsenilgatetahuoytnod (2:310/31)   

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