JTDX is a software application designed for amateur radio operators created by Igor Chernikov, UA3DJY, and Arvo Järve ES1JA. The software is freely available and can be used on any computer with a sound card. It is a great choice for operating FT8 mode, currently the most popular digital mode on spotting networks such as PSK Reporter.
JTDX supports JT9, JT65, T10, and FT8 digital modes for HF amateur radio communications. It is very similar to WSJT-X but it has different features and may have a performance boost over WSJT-X on HF.
Download the latest version of JTDX here
FT8 uses 8-GFSK modulation, includes forward error correction (FEC), and has an effective data rate of 5 words per minute. FT8 mode transmissions can be decoded at S/N down to -21dB (very weak signal). High power is usually not needed and most amateurs stick to output levels around or below 30 watts. Even with this power, worldwide contacts are still possible. It is important to keep your computer synchronized -0.2…+0.5 seconds to the network.
Additionally, JTDX is able to send signal reports to spotting networks such as PSK Reporter and integrates easily with Grid Tracker.
What is JTDX
JTDX is licensed under the terms of Version3 of the GNU General Public License (GPL).