# restrict access to avoid abuse of NTP for traffic amplification attacks # please check for additional documentation and background information # Configuration File created by Windows Binary Distribution Installer Rev.: 1.27 mbg # PLEASE CHECK THIS FILE CAREFULLY AND MODIFY IT IF REQUIRED # **** ATTENTION ****: *You have to restart the NTP service when you change this file to activate the changes* So far my GPS time sync setup has been stable and is keeping me in sync ? WSJT-X WaterfallĪnd ntp time server monitor by meinberg 1.04 GPS Monitor main screenįlip over to the Status tab and give it sometime for the jitter to settle down. If your port is different then adjust the port accordingly and save the file.īack on the main tab, start or restart the service for the updated config to be read.
#Jt65 time sync serial
The last octet is the serial port, so as in my case if your serial port is 11 the line will read: Next need to add in a line to bring in the correct reference clock driver, which for us is the NMEA GPS Receiver driver.
![jt65 time sync jt65 time sync](https://vk7is.files.wordpress.com/2014/08/screenshot-2014-08-11-20-58-28.png)
Once you can edit the conf file you can comment out everything except the restrict and driftfile line in the stock file. Typical if you installed with the defaults is “C:Program Files (x86)nf”. Next setup up the location of of the config file. This is easily done via the shortcut properties. However as this app has not been updated for Windows 7 it needs to be run with admin privileges in order to write the ntp.conf file. A simple way to manage the NTP service and edit the ntp.conf file is via the NTP Time Server Monitor app. With the GPS port found next step is to setup the NTP service to use it. Once you locate the port, make note of it and exit GPSInfo. If not rinse and repeat until you find the correct port. Press the Start GPS button to test that the port you selected is the GPS.
#Jt65 time sync driver
Look for ports which have the Prolific driver and select it. The first step is finding what port it is on, an easy way to do this is to download GPSInfo from the GlobalSat website. I used the Windows binary installer available on the Meinberg website and while I was there I also downloaded the NTP Time Server Monitor.Īfter installing both packages the first step is to adjust the ntp.conf file to make use of your GPS receiver. The next step was installing a NTP server on my Windows 7 workstation. Sits above my desk on a shelf and has no trouble getting a lock through the roof.
![jt65 time sync jt65 time sync](https://i2.wp.com/www.kevinhooke.com/wp-content/uploads/2019/05/image-11.png)
GlobalSat BU-353-S4 USB GPS Shopping List
![jt65 time sync jt65 time sync](https://i.ytimg.com/vi/NzXkIvoqvAY/maxresdefault.jpg)
My goal is usability and not perfection and this system is very usable.
![jt65 time sync jt65 time sync](https://www.essexham.co.uk/images/jt65_qso.jpg)
While the dedicated NTP sites frown upon the use of a GPS receiver which does not have a PPS output. Then a local NTP server with a GPS reference may be just the ticket. If however your internet connectivity is a bit dodgy or you want the ability to operate without (gasp !! ) internet connectivity.
#Jt65 time sync install
The simplest solution is to install an NTP client and be on your way. If your workstation time is off it can cause you to send when no one is listening, or to listen when no one is sending. Meinberg also has a Windows NTP client available at Īs FT8, JT65 and JT9 are a time synchronized protocol, one soon discovers that an accurate PC clock is very important. I have been getting alerts that the Dimension4 website link below has been down on occasion.