6 total messages, thus most JT9/JT65 messages are 6 minutes long. ![]() Finally, it passes an acknowledgement of the received signal. ![]() Next it passes signal reports, which is how strong the signal is above the noise floor. Most conversations go something like this:īasically, the message first passes location, in the form of grid squares. The message length is only a few characters, enough to include a very short message. It is extremely important to keep your clock synchronized as well. One person is talking on Even, the other on Odd minutes. When the message is received, it is then decoded, and the operator has a few seconds to choose a message to send back to the original user. The basic premise behind any of the WSJT modes, of which both JT9 and JT65 are a part of, is that a low power signal consisting of tones is sent for a period of just under a minute. I'm hoping to give a bit of an idea of how these two modes work, and what should be done to improve communications on the subject. I've found them to be rather relaxing modes, you can easily do something else while you are talking, and just get back to the conversation every two minutes. ![]() In my working with digital modes, I have started with JT9/JT65.
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