![]() ![]() JT9 is about 2 dB better Achieving 50% decoding at about –26 dB. Messages to 72 bits 6-bit symbols / 64 character alphabet. ![]() 177.6 Hz for JT65A JT65 –1 to –30 dB JT65 clamped at an upper limit –1 dB Low False Decodes 50 seconds each TX/RX, 5 minutes total (6m)Ģ6 JT9 Used to use the KVASD decoder Now use the FT Decoder ![]() Now use the FT Decoder (Frank Taylor) JT65 source-encodes all messages to 72 bits and uses 6-bit symbols (72/6=12), and only uses a 64 character alphabet. 50 Hz S/N to –20 dB ( dB theoretical) Low False Decodes 13 seconds each TX/RX, 1m 15s total (6m) Sporadic E - 6 meters Modes on WSJT-X 1.8.0rc3 FT-8 (6 meter, sporadic-e) JT65 (EME) VHF/UHF QRA64 (EME) VHF/UHF … it’s better ISCAT (fast) for meteor & airplane scatter MSK144 (fast) for meteor & airplane scatter WSPR Weak Signal Propagation Reporter Echo measure your own station’s echos bouncing off the moon Great for compromised antennas and QRP! (doesn’t have to be QRP though)Ģ1 Modes on WSJT-X 1.7.0 JT4 Microwave JT9 (HF/MF) 2db more sensitive Wikipedia 2017/03ġ8 Nobel Prize in Physics Laureate for with Russell Alan Hulse of a "new type of pulsar, a discovery that has opened up new possibilities for the study of gravitation."ġ9 “Weak Signal Joe Taylor” (WSJT-X) Weak Signal - Not Weak Power He has served on many boards, committees, and panels, co-chairing the Decadal Panel of that produced the report Astronomy and Astrophysics in the New Millennium that established the United States's national priorities in astronomy and astrophysics for the period He was a guest of honor in the 2009 International Physics Olympiad. Carty Award for the Advancement of Science of the National Academy of Sciences (1991) (physics) Wolf Prize in Physics (1992) Nobel Prize in Physics (1993) Karl Schwarzschild Medal (1997) Taylor was among the first group of MacArthur Fellows. Also licensed in Australia at one point in time.ġ7 Honors and Awards Heineman Prize of the American Astronomical Society (1980)(inaugural) Fellow of the American Academy of Arts and Sciences (1982) Henry Draper Medal of the National Academy of Sciences (1985) Tomalla Foundation Prize (1987) Magellanic Premium (1990) Albert Einstein Medal (1991) John J. WSJT-X Let’s start looking at some of these time synced modes….Īmerican astrophysicist and Nobel Prize in Physics. Computer Audio Computer Audioġ1 What do we need? A Transceiver Radio ComputerĪ Sound Card (Input and Output) Signalink (External Sound Card) Cables Software Ham Radio License Internet or a portable GPS based NTP serverġ3 CAT Control Software such as HRD Ham Radio DeluxeĬAT Control inside of FLDigi CAT Control inside of WXJT-X, WOO HOO Uses HamLib Changes Frequencies, Accurate Spotting, All the Things!ġ4 License Make sure you are operating within the privileges of your license.ġ5 Let’s start looking at some of these time synced modes…. Upper Side Band | Lower Side Band | FM | AM Voice Audio Voice Audioĩ What’s the difference? The Computer is making the noises now, not the human! Making actual, audio waves, with the sound card. Not Time Based PSK31, MFSK, Olivia, RTTY THOR, MT63, Contestia, CW Using FLDigi Timed JT65, JT9, FT-8, WSPR, MSK144 Using WSJT-X, JTDXĦ PSK31, MFSK, Olivia, RTTY THOR, MT63, Contestia, CW Using FLDigi Some modes require no time coordination.ĥ JT65, JT9, FT-8, WSPR, MSK144 Using WSJT-X, JTDX Some modes require accurate time for FEC. ![]() ( What did he just say? ) More of the “How To” Less of the “How does it work” n1sc-sandy (case sensitive) (includes information sources)ģ FT-8, JT65, JT9, MSK144, WSPR, PSK31, & More! 1 Digital Modes with HF Presented by Jeff McGrath N1SC ![]()
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