Re: System Clock Race, WSJT-X
- As another point of reference, I installed WSJT-X on an old Dell laptop (366 MHz, 256 MB RAM, WinXP/SP3), with NO clock correction software running (no network interface anyway). I manually synchronized the clock with WWV, then ran WSJT-X in both receive and transmit mode, and there was zero impact on the clock - no clock race nor retardation.
Why do I have a problem on my desktop PC? Another strange one! Joe's -X programs contain strangeness - quantum mechanics incorporated in them? Ha, ha!
--- In firstname.lastname@example.org, "k0og" <counsil@...> wrote:
> I installed the Meinberg NTP software (using all the default settings), rebooted the PC (WinXP/SP3), then ran WSJT-X. I monitored for several minutes, then completed a QSO with KN3A while I was running 0.5W. I observed NOT EVEN A HINT of clock race during receive nor transmit modes. I did notice that there is now regular network traffic (once or twice a minute) I did not experience before due to the clock updates from the Meinberg software. This is not a problem as long as I am at home with network access.
> However, I planned to run WSJT-X during Field Day, during which I will have no network access. I want to demonstrate JT9-1 and complete a few QSOs during Field Day to qualify for the non-traditional mode bonus points. The clock issue could be a problem in that circumstance.
> Thanks for the help, and please let me know what I can do to help diagnose the problem.
> --- In email@example.com, Joe Taylor <joe@> wrote:
> > Hi Joe,
> > K0OG wrote:
> > > If I don't even have my radio turned on, I still experience the
> > > system clock race problem. When WSJT-X (latest version, v99,
> > > r3297) is in receive mode, there is no impact on my system clock.
> > > However, as soon as I click on the "Enable TX" button, my system
> > > clock starts running fast, by several tenths of a second per
> > > minute. I do not have an RF problem (radio turned off), and no
> > > other applications (including all of Joe's programs, including
> > > WSPR-X) cause any perturbation of my system clock.
> > This is not normal behavior, and is not shown by most computers running
> > WSJT-X. We might be able to determine why it's happening... but first,
> > did you follow the advice in the WSJT-X User's Guide and install
> > Meinberg NTP to keep your clock synchronized? Easy-to-follow
> > instructions are posted at http://www.satsignal.eu/ntp/setup.html .
> > Once installed, you should never have to think about it again.
> > -- Joe, K1JT