If you can get (and maintain) accuracy within +/- 1 second of UTC you should be able to work other stations. If you do not have internet access your only option is to try to maintain a manual sync by some broadcast time service. Trusting those methods will likely leave you routinely out of temporal sync and make your enjoyment (and others as well) of JT65 much lessened. The built in time synchronization software with Windows XP (and beyond) is usually not sufficient to maintain a high degree of accuracy. See Specifically you'd need NTP for Windows NT/2000/XP/2003/Vista/Windows 7 and NTP Time Server Monitor I present those as options versus a recommendation. If you're reasonably computer literate you should be able to mange it. Many use I use a more complicated solution, but, one that can offer better long term stability and reliability of the clock synchronization. Free solutions to this issue are readily available. If you have internet access there is NO EXCUSE for not having a properly synchronized clock.
You can not successfully have a JT65 QSO without a close synchronization of your local computer's time value to UTC.
First and most important is that of time synchronization. Thank you all!Ģ Before beginning the specific setup instructions for JT65-HF I would like to cover some basic concepts that applies equally to all programs implementing the JT65 protocol. JT65-HF Source code is available from JT65-HF Support group is available at Real-time chat and information my be found at Reverse Beacon reports may be seen at and and and preset&callsign=zzzzz&what=all&mode=jt65a&timerange=1800&hidelight=1&sparktime=5 I would also like to offer special thanks to all those who have helped and provided vital assistance during the Alpha testing phase. Any questions or issues with JT65-HF should not be addressed to The WSJT Development Group, they will have no idea what you are asking about. JT65-HF is based on code from The WSJT Project and would not be possible without the efforts of K1JT and others within the WSJT development group. Large W4CQZ and distributed under GPL2 license.
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