Hi If you are going with an NAA receiver for frequency and time, I would not strip off the modulation. Recover it, time tag it once a second and work out a way to compare sequences between observers. If they are (still) transmitting random looking “stuff” the one second signatures should be reasonably unique. Net result would be getting “everything" (time ticks and frequency) from NAA that you would have from WWVB.
Coverage area is pretty good. You should be able to get a wide range of people involved. Bob On Aug 17, 2014, at 2:23 PM, Kenneth G. Gordon <kgordon2...@frontier.com> wrote: > On 17 Aug 2014 at 7:52, Burt I. Weiner wrote: > >> Gang, >> >> Just for fun I just tried to see if I could hear the signal on 24 kHz >> using my GPS referenced HP-3586B and a HP-3336A also GPS locked to >> compare the I.F. frequency using a 1:1 Lissajou pattern. It's 7:30 >> AM here in Los Angeles. I heard a signal but I doubt that it was >> NAA. > > Isn't NAA on 24.6 Khz? I am not certain of the frequency. > >> What time of the day would be best, probably when the entire >> path is dark? > > In my experience, here in North Idaho, and when I was in Missoula, MT, > athough the signal level rose and fell with diurnal variations in the amount > or > lack of sunlight, it was ALWAYS there...at least as long as the transmitter > was in operation. > >> My antenna is a dipole about 30-feet on a side, which >> is really all I've got up at the moment. It's orientation favors >> that part of the country. I hear WWVB at 60 kHz almost all the time >> with that antenna. WWVB is quite recognizable because of the phase >> shift signature as seen on my X-Y display. > > If you are hearing WWVB, you most CERTAINLY will hear NAA...if they are > on the air. > > Into my location here, NAA is at least three times as strong as WWVB. > > Ken W7EKB > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
