Hi, Apparently India plans to build two longwave transmitters for a national time signal service: http://www.thehindu.com/todays-paper/tp-national/coming-huge-towers-to-publicise-right-time/article23377284.ece No technical details such as frequency and modulation are given, nor whether the carrier will also serve as a reference frequency. They do mention involvement of the German EFR company, who operate three transmitters between 129 and 139 kHz for remotely controlling equipment and broadcasting time, using 200 baud FSK. One might speculate similar signals will be used for the new India service. Regards, Pieter-Tjerk (PA3FWM)

Pieter That is quite a surprise that a country is setting up a long wave system these days. They still have to raise the money but it seems like a semi-private arrangement. Even more interesting is they suggest 3 locations. Something to try to find in the VLF bands some day in the future. Regards Paul WB8TSL On Tue, Apr 3, 2018 at 5:16 PM, Pieter-Tjerk de Boer <p.t.deboer@utwente.nl> wrote: > Hi, > > Apparently India plans to build two longwave transmitters for a national > time signal service: > http://www.thehindu.com/todays-paper/tp-national/coming-huge-towers-to- > publicise-right-time/article23377284.ece > > No technical details such as frequency and modulation are given, nor > whether > the carrier will also serve as a reference frequency. > > They do mention involvement of the German EFR company, who operate three > transmitters between 129 and 139 kHz for remotely controlling equipment > and broadcasting time, using 200 baud FSK. One might speculate similar > signals will be used for the new India service. > > Regards, > Pieter-Tjerk (PA3FWM) > > _______________________________________________ > 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. >

-------- In message <CAD2JfAiqwyYHkcsc_P2d3AwFzr17k-_=UVHadZV+VZNAYi-N9g@mail.gmail.com> , paul swed writes: >That is quite a surprise that a country is setting up a long wave system >these days. I can see a lot of uses for it in India, from the railroads to the power-grid or even just emergency-warnings to the population. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.

Hi It’s also *way* cheaper than putting up your own satellite based timing and navigation gear. I suspect that the whole “what if this or that set of sat’s have issues?” thing is beginning to sink in …. Bob > On Apr 4, 2018, at 2:47 AM, Poul-Henning Kamp <phk@phk.freebsd.dk> wrote: > > -------- > In message <CAD2JfAiqwyYHkcsc_P2d3AwFzr17k-_=UVHadZV+VZNAYi-N9g@mail.gmail.com> > , paul swed writes: > >> That is quite a surprise that a country is setting up a long wave system >> these days. > > I can see a lot of uses for it in India, from the railroads to the > power-grid or even just emergency-warnings to the population. > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > phk@FreeBSD.ORG | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by incompetence. > _______________________________________________ > 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.

India has IRNSS, their own GNSS augmentation system. FWIW, S Korea is about to start testing its own radio time signal but the range is only 500 km or so as I remember. Cheers Michael On Thu, 5 Apr 2018 at 12:23 am, Bob kb8tq <kb8tq@n1k.org> wrote: > Hi > > It’s also *way* cheaper than putting up your own satellite based timing > and navigation > gear. I suspect that the whole “what if this or that set of sat’s have > issues?” thing is > beginning to sink in …. > > Bob > > > On Apr 4, 2018, at 2:47 AM, Poul-Henning Kamp <phk@phk.freebsd.dk> > wrote: > > > > -------- > > In message <CAD2JfAiqwyYHkcsc_P2d3AwFzr17k-_= > UVHadZV+VZNAYi-N9g@mail.gmail.com> > > , paul swed writes: > > > >> That is quite a surprise that a country is setting up a long wave system > >> these days. > > > > I can see a lot of uses for it in India, from the railroads to the > > power-grid or even just emergency-warnings to the population. > > > > -- > > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > > phk@FreeBSD.ORG | TCP/IP since RFC 956 > > FreeBSD committer | BSD since 4.3-tahoe > > Never attribute to malice what can adequately be explained by > incompetence. > > _______________________________________________ > > 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. >