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<pre wrap="">Dear IGS colleagues!
The absolute IGS antenna correction file (igs14_wwww.atx) has been
updated. The new release is called 'igs14_1949.atx'. It contains the
following changes:
According to NANU 2017042, BLOCK IIA satellite SVN38 will resume
transmitting
1) According to NANU 2017042, Block IIA satellite SVN38 will resume
transmitting L-band utilizing PRN04 on approximately 18 May 2017.
Therefore, the following satellite has been added to igs14.atx (The
actual start date will be adapted with the next release.):
G04 (G038)
NANU message 2017042:
</pre>
<blockquote type="cite" style="color: #000000;">
<p class="gd_p" style="text-align: left; color: #232323; margin:
1em 0px; font: 13px/1.5 Arial, Helvetica, sans-serif;"
align="left">NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2017042
NANU TYPE: GENERAL</p>
<p class="gd_p" style="margin-bottom: 1.0em; color: #232323; font:
13px/1.5 Arial, Helvetica, sans-serif;"> </p>
<p class="gd_p" style="text-align: left; color: #232323; margin:
1em 0px; font: 13px/1.5 Arial, Helvetica, sans-serif;"
align="left">*** GENERAL MESSAGE TO ALL GPS USERS *** On
approximately 18 May 2017 SVN38 will resume transmitting L-band
utilizing PRN04. At L-band activation, SVN38/PRN04 will be
unusable until further notice. Additionally, no broadcast
almanacs will include SVN38/PRN04 until further notice.</p>
<p class="gd_p" style="margin-bottom: 1.0em; color: #232323; font:
13px/1.5 Arial, Helvetica, sans-serif;"> </p>
<p class="gd_p" style="text-align: left; color: #232323; margin:
1em 0px; font: 13px/1.5 Arial, Helvetica, sans-serif;"
align="left">*** GENERAL MESSAGE TO ALL GPS USERS ***</p>
</blockquote>
<pre wrap=""><a class="moz-txt-link-freetext" href="http://www.navcen.uscg.gov/?Do=gpsShowNanu&num=2017042">https://www.navcen.uscg.gov/?Do=gpsShowNanu&num=2017042</a>
2) According to CODE, G049 stopped signal transmission on 12 May
2017. Therefore, a decommission date for the following satellite has
been added:
G04 (G049): 12 May 2017 (23:59:59.9999999)
The updated antenna correction model is available at
<a class="moz-txt-link-freetext" href="ftp://ftp.igs.org/pub/station/general/igs14_1949.atx">ftp://ftp.igs.org/pub/station/general/igs14_1949.atx</a>
or
<a class="moz-txt-link-freetext" href="ftp://ftp.igs.org/pub/station/general/igs14.atx">ftp://ftp.igs.org/pub/station/general/igs14.atx</a>
With best regards,
Arturo Villiger
on behalf of the IGS Antenna Working Group</pre>
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