JT9
JT9 weak-signal ham radio mode
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Operating WSJT-X modes JT-65 and JT-9 on Apple Mac OSX computers -
Guide to JT65A and JT9 via WSJT-X Software by Andy K3UK -
A guide to setup and operate on JT-9 mode, including a sample QSO and setup hints by VA3PAW -
JT9 is a amateur radio weak-signal digital mode can give little pistol stations big gun results, ARRL article by W4GAL -
WSJT-X is an experimental version of WSJT implementing JT9, a mode designed for making QSOs under extreme weak-signal conditions