WSJT-X for Dummies & Experts

An Amateur Radio Program for Decoding Weak Signals

Summary

WSJT-X is a digital software program for amateur radio operators. If you already have the equipment to run PSK or RTTY, then you have all you need.  


This site attempts to simplify its setup and use on the amateur bands. It is designed to complement, not to take the place of the program's documentation. The program's documentation is a must read if you want to be sucessful in using WSJT-X.  


You can find the official WSJT-X documentation: HERE.

New Block


Here is a basic guide which should help you quickly setup the MSK144 and JT9 Fast Modes. 


MSK144 minimal settings

Main Screen: File, Settings.  Select "Enable VHF/UHF/Microwave features".  If selected, deselect "Single decode";

Settings, Frequencies.  For easier operation, include the frequency(ies) you intend to use for MSK144 in the "Working Frequencies" table;

Mode: MSK144;

Main program screen: Change F Tol.  F Tol can be thought of as receiver bandwidth.  The lower the number, the smaller bandwidth in Hertz the program will use to decode a signal.  You should change this to either 100 or 200, as not eveyone's radio will be on the exact frequency as your radio is.  Note that the higher the number, the more CPU cycles and/or memory your computer will use.  Older computers will need to compensate; consider closing other running programs;

T/R:  you will find that most MSK144 users will use a transmit/receive sequence of 15 seconds. Therefore, change T/R to 15 seconds.  Note that it is also possible to change T/R to 10 and even 5 seconds;

Auto Seq: this is auto sequencing, where after a transmission is acknowledged by either station after selecting Tx2, from then on the program will automagically change to the next message.


JT9 Fast Modes minimal settings:

Main Screen: File, Settings.  Select "Enable VHF/UHF/Microwave features" ;

Settings, Frequencies.  For easier operation, include the frequency(ies) you intend to use for MSK144 in the "Working Frequencies" table;

Mode: JT9 - (NOT JT9+JT65);

Main program screen: both TX and RX should be set to 700 Hz.  The Fast modes can be selected by the Submode menu.  E, F, G and H are the Fast modes.  Then click both the Fast and Auto Seq button.

T/R:  you will find that most JT9 Fast mode users use a transmit/receive sequence of 15 seconds. Therefore, change T/R to 15 seconds;

Auto Seq: this is auto sequencing, where after a transmission is acknowledged by either station after selecting Tx2, from then on the program will automagically change to the next message.


Guides for the other modes of WSJT-X are forthcoming.