There are more digital modes than you can shake a stick at! RTTY, PSK, QPSK, MFSK, Olivia, MT63, JT65, Contestia, Hellschreiber, Throb, Packet, WSPR, SSTV, FreeDV and many many more! Some of these modes are experimental. We will see in upcoming slides how many of these modes will fit multiple conversations in the same voice bandwidth. 97.313(a) use the minimum transmitter power necessary to carry out the desired communications. Good for Emergency Communications For emergency work large data files such as needed supplies, lists of injured and other large amounts of health and welltfare traffic can be sent error freeġ1 Why Digital? Many modes use smaller bandwidths than voiceĩ7.1(b) contribute to the advancement of the radio art. Some modes work very well in noisy and weak signal environments If you can’t hear them you can’t work them is no longer true!ġ0 Why Digital? Some modes can provide error free or reduced error transmissions. SWL since 1967, first licensed in 2006 and collects QSL cards President of OCARS (W8TNO) Certified Public Accountantħ Introductions Brian Johnston W8TFI Licensed in 1976Ĭomputer operator for a major news paper Avid experimenter and home brewerĨ Introductions John Mathieson AC8JW Licensed since about 2005ĩ Why Digital? Send and receive text, images, data, and audio Land-Mobile-Radio Systems & Field Engineer Ham since 1964 Retired from electronics manufacturing and IT systems Active experimenter and home brewer Hardware : Radio, Computer, and interfacesĤ Introductions John Clements KC9ON Licensed in 1979 at age 16 Smith WA8LMF Joe Miller KJ8O John Mathieson AC8JW Brian Johnston W8TFI May 2014Ģ Contents Introductions Why Digital? Digital Modes of Operation Slides with a speaker icon can be clicked on the hear what the mode sounds like John Clements KC9ON Stephen H. How to work those strange sounds you hear on the air Check your sound before making the presentation. Presentation on theme: "HF Digital Communications"- Presentation transcript:
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