John RABSON wrote:
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On 07/01/2010 at 06:33 [email protected] <[email protected]> wrote:
The Coast Guard has today published two articles in the Federal Register.
They state that Loran-C is not needed as a backup to GPS or for any other
Federal requirement, and that they intend to begin shutting down Loran-C
operations on Feb. 8, with completion by October 1, 2010.
See: http://edocket.access.gpo.gov/2010/pdf/2010-84.pdf
John, W1TAG
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We will loose onother LF signal olso....
The Swiss Federal council decided that the HBG time signal transmitter
at Prangins (Vaud) located at 46 degrees 24' North, and 6 degrees 15 '
East, and serving a 1500 mile radius at the heart of Europe, will cease
activity at the end of 2011.
Since 1966, the HGB transmitter at Prangins has transmitted official
time signals synchronized to Universal Coordinated Time (UCT), on a
frequency of 75 Khz. The precise carrier frequency of 75 kHz,
synchronized by an atomic, clock, and the time markers (second pulses,
and coded information giving the time of day and the date), can be used
for the verification of frequency standards and time control purposes.
During periodic maintenance work carried out on the transmitter, the
obvious signs of age were observed on the antenna masts. Independent
consultants opined that without a complete overhaul, the installation
should be closed because it presented considerable risks. To maintain
the transmitter at Prangins would be very expensive and the time signal
is used too little to justify the high costs of a renovation, according
to the study carried out by the outside experts. The Swiss Federal
council thus, decided to close the installation at the end of 2011. This
window of time will permit users to adapt their clocks to the signal of
the German transmitter DCF77, whose signal is received in Switzerland
with a quality comparable with that of the HBG. The Swiss official time
will continue to be transmitted by METAS (Swiss Federal Office of
Meteorology) on the Internet at ntp.metas.ch
<http://www.metas.ch/metasweb/Fachbereiche/Zeit_Frequenz;internal&action=setlang&lang=fr&;>.
METAS is charged with the reckoning and the diffusion of standard units
in Switzerland, of which the unit of time, the second, is one.
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