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Introduction to WSJT-X FT-8

Introduction to WSJT-X FT-8

Written and presented by Kent Olson KA0LDG for the April 17, 2018, RRRA Meeting.

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Red River Radio Amateurs

April 17, 2018
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Transcript

  1. Overview • What is FT8? • Why should I try

    it? • How easy is it? • Desktop Screens • Setup • Support Programs • Hints • Computer Interfaces • Demo
  2. Joe Taylor, K1JT; Stan Franke, K9AN and Bill Somerville, G4WJS

    developed a new mode for WSJT-X, FT8 (Frankie-Taylor design, 8 FSK modulation) released on June 29, 2017 What is FT8?
  3. Why should I try FT8? • Why not! • Ham

    radio is fun and FT8 can be too! • Low/no sunspots = no problem for FT8 • Work WAS, DXCC, Grid Chase, etc. under marginal conditions • Learn something new – that's what ham radio is, isn't it? • If you've done other digital / sound card modes, you're already set up • Life is too short to wait for the next good solar cycle!
  4. How easy is it?? • Very! Even a caveman can

    do it! • Marginal antennas will work (i.e. inside) • Low power <100 watts, 40-50 typical • Important note: If your rig isn't designed for full duty cycle at 100 watts, don't do it! • Requirements: HF rig, computer interface, antenna, power supply, computer w/WJST-X software, and a yearning to have fun
  5. Note: Don’t erase the ADI log, it is used to

    find the stations you have worked.
  6. Auto Sequence & Call 1st Even/ Odd TX Sets TX

    Freq Sets Sets RX Freq Locks TX=RX Auto Sequence – Automatically sequences thru the QSO – Signal Report, Roger & 73 Call 1st – Answers for 1st call found after a CQ – not recommended when call CQ DX
  7. FT8 Setup – Internet Reference • Help document on WJST-X

    website • YouTube – lots of videos • W6LG, KEØOG, and others • FT8 Setup, Jim Carson, WT8P • “Google it” https://www.jimcarson.com
  8. FT8 Setup • Like any digital mode, audio levels must

    first be set correctly to ensure there's no distortion on your signal. • Select “File” • Select “Settings”
  9. Note: These are my settings for my rig & interface,

    yours may be different – consult your owners manual. There's always help on the internet or from a fellow ham ;-)
  10. FT8 Frequencies Band MHz 160M 1.840 80M 3.573 40M 7.074

    30M 10.136 20M 14.074 17M 18.100 15M 21.074 12M 24.915 10M 28.074 6M 50.313
  11. Support Programs • PSK Reporter – Reverse Beacon Network •

    DX Maps – DX Spotting Map • JT Alert • Grid Tracker • Net Time, Dimension 4, or others Note: I have no interest in any of these programs ;-)
  12. Logging Programs that support FT8 • Ham Radio Deluxe V6

    • N3FJP • Log44M • LOTW • N1MM • Probably others • EQSL
  13. Operating Hints • When using a computer sound card, turn

    off computer sounds • Also turn off any voice announcements • Remove the mic from your rig if using aux audio inputs. Most rigs don’t mute the mic when using the aux input. • Use the rig monitor to check your audio for hum and RF. • Check the “DT”, delta time, should be .5 seconds or less. • If you use 100 Watts, be sure your radio can handle it for the long operating time. Add extra fans if needed. • Low power is recommended & appreciated (<50 watts)!
  14. Advanced Operating Hints • In crowded band conditions or working

    DX, try using split transmit & receive frequencies. • When calling DX try sending the signal report first instead of your call/grid square. • When working DX, try calling him split, Either just off his frequency or on the low end of band. Calls are displayed starting at the low end of band. Call 1st will work the first station found when the station is calling CQ. • Listen to the DX station to see the transmit sequence, 1st or 2nd and how they are handling the pile up and if they are working split. • Try tail ending, listen when the DX station send 73 and call then. You might try a different frequency or split. • Look for DX stations that are working S&P and call them. • If the receiving frequency on the waterfall display is red, this is a strong signal or multiple stations calling and it can be hard to decode.
  15. Computer Audio Rig Interface • West Mountain Radio, Rigblaster •

    Tigertronics, SignaLink • MFJ • Home-brew resistor dividers – Mic & Speaker audio • FlexRadio uses a virtual audio connections • USB Sound Adapters ($5 up) *Still need to build interface (2 resistor dividers) *Many rigs have built in sound card interfaces (IC-7300, FT-991A, and others)
  16. Overview / Review • What is FT8? • Why should

    I try it? • How easy is it? • Desktop Screens • Setup • Support Programs • Hints • Computer Interfaces • Demo
  17. Credits Thanks to: KJ9B & K9RU for portions of this

    presentation Now for the Demo!!!! Questions?? **This presentation will be posted on the RRRA website**