Discussion:
new longwave time service planned in India
(too old to reply)
Pieter-Tjerk de Boer
2018-04-03 21:16:34 UTC
Permalink
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-***@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
paul swed
2018-04-03 22:56:38 UTC
Permalink
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
Post by Pieter-Tjerk de Boer
Hi,
Apparently India plans to build two longwave transmitters for a national
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)
_______________________________________________
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-***@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
Poul-Henning Kamp
2018-04-04 06:47:33 UTC
Permalink
--------
Post by paul swed
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
***@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-***@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
Bob kb8tq
2018-04-04 14:19:08 UTC
Permalink
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
Post by Poul-Henning Kamp
--------
Post by paul swed
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
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
_______________________________________________
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-***@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
Michael Wouters
2018-04-05 06:03:32 UTC
Permalink
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
Post by Bob kb8tq
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
Post by Poul-Henning Kamp
--------
In message <CAD2JfAiqwyYHkcsc_P2d3AwFzr17k-_=
Post by paul swed
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
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by
incompetence.
Post by Poul-Henning Kamp
_______________________________________________
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Post by Poul-Henning Kamp
and follow the instructions there.
_______________________________________________
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-***@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Loading...