Hi Graham, I am listening to one of those "time pips" on 30m right now. (1714 utc 02/05/2018). Frequency is 10.105.
The best I can tell with my calibrated ears and eyes, it appears to be in sync with WWV. Signal strength is about a s6-7. I also heard this on Saturday 02/03/2018 about the same frequency but later in the day. -Scott AA5AM EM13sg - Blue Ridge TX On Sun, Feb 4, 2018 at 4:31 PM, Graham <[email protected]> wrote: > For some time there have been occasional reports of time pips on a number > HF frequencies other than the well known CHU, WWV, (etc...) signals. > > For example 10140, 10145, 7040, 7065, 7105, 7120 kHz and likely others. > > The pips are approximately 15 to 16ms in duration and appear to locked to > UTC but unlike WWV or CHU they are continuous minute by minute. > > Assuming the pips are synchronized to UTC, simply time of arrival with all > of its issues on HF plus signal strength seems to indicated a source in > North America. > > The frequencies and time of activity might indicate that it is some > amateur radio operator playing around but it might not be, the amateur > 10MHz frequencies is shared with other users. The pips seem to be > transmitted at a fairly high power level. > > I know there is ongoing testing of eLoran and other initiatives > researching GPS backup systems. > > Anyone aware of any group doing any such testing which might be found on > HF like this? > > cheers, Graham ve3gtc > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/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.
