Conversely, when you want to transmit, the software encodes your message into audio tones that are sent out via your sound card to your radio’s audio or Mic input.įor years there have been a variety of these new software modes including Phase-shift keying (PSK31 & PSK 65), Hellschreiber, Olivia, Pactor, etc. As one of the fastest growing modes of Amateur Radio it has been hard to miss, but you may be wondering how to get started and why you would want to.įirst, what is it? FT8 is one of the many digital modes often referred to as sound card modes (SCM) because they utilize a computer’s sound card to bring in audio from your radio to be processed by software to decode the information embedded in the signal. A lack of sunspots has turned HF CW and SSB into a dead zone for many of us who don’t operate super stations. I am guessing that most of you reading this have either heard about FT8 from fellow Hams or heard it on air as that strange repetitive buzzing sound between the CW and SSB portions of the bands.
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