Hi Dave: The HP 114 is a 1 PPS trigger generator with offset and was made for use with WWV, see: http://www.prc68.com/I/TF_rack.html The audio from an HF receiver is fed to the V input on the scope and you can adjust the sweep speed as fast as propagation will allow. The 114 time offset moves the trace left or right. Then watching how long it takes to drift a division you can see what your house standard is doing.
An interesting way to use HF for time transfer would be to use a chirp based system. Most chirp transmitters now use GPS control of their timing. Chirp is used to determine what the propagation is between a given transmitter and receiver. Since the chirp receiver knows exactly what the propagation is it should make for a more acccurate HF timing receiver. http://www.prc68.com/I/RCS-5A.shtml Have Fun, Brooke Clarke http://www.PRC68.com http://www.precisionclock.com http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Cam Dave Brown wrote: > ----- Original Message ----- > From: "Tim Shoppa" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Monday, December 17, 2007 8:37 AM > Subject: Re: [time-nuts] Time Transfer > > > snip------ > > >>>Yes, it's interesting to look at the WWV signal wander on the HP >>>3586, >>>compared to it's OCXO, and while listening to it on the speaker or >>>on a >>>receiver. I need to plot it over a 24 hour period or so. >> >>It depends on where you are and how long you average over, but >>by eye I see WWV on 10 and 15 MHz going up and down by tenths of a >>Hz >>in the several minute timespan from here on the East Coast. > > > Its also instructive to use a scope triggered off a local PPS and > watch the timing of the 1 second pips on WWV bounce around. > > DaveB, NZ > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
