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<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">Dear IGS colleagues,<o:p></o:p></span></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> <o:p></o:p></span></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">The absolute IGS antenna correction file (igs14_wwww.atx) has been updated.
<o:p></o:p></span></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">The new release is called 'igs14_2062.atx'. It contains the following changes:<o:p></o:p></span></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> <o:p></o:p></span></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">1) According to CODE satellite G074 (G04) has stopped transmitting on the 12. July 2019.
<o:p></o:p></span></p>
<p><span style="font-size:10.5pt;font-family:"-moz-fixed",serif"> The following decommission date has been added:
<o:p></o:p></span></p>
<p><span style="font-size:10.5pt;font-family:"-moz-fixed",serif"><br>
G04 (G074): 12 July 2019</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"><o:p></o:p></span></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> </span><span style="font-size:10.5pt;font-family:"-moz-fixed",serif">2) According to NANU 2019104, Block IIA satellite SVN36 will resume transmitting L-band utilizing PRN04<o:p></o:p></span></p>
<p><span style="font-size:10.5pt;font-family:"-moz-fixed",serif"> on approximately 18 July 2019. Following satellite entry has been added:<br>
<br>
G04 (G036): 13. July 2019 <br>
<br>
NANU message 2019104:</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> <o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:18.0pt"><o:p> </o:p></p>
<p class="MsoPlainText">NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2019104 NANU TYPE: GENERAL<o:p></o:p></p>
<p class="MsoPlainText">*** GENERAL MESSAGE TO ALL GPS USERS *** On approximately 18 JUL 2019 SVN36 will resume transmitting L-band utilizing PRN04.<o:p></o:p></p>
<p class="MsoPlainText">At L-band activation, SVN36/PRN04 will be unusable until further notice. Additionally, no broadcast almanacs will include SVN36/PRN04 until further notice.<o:p></o:p></p>
<p class="MsoNormal">*** GENERAL MESSAGE TO ALL GPS USERS ***<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"-moz-fixed",serif"><a href="https://www.navcen.uscg.gov/?Do=gpsShowNanu&num=2019104">https://www.navcen.uscg.gov/?Do=gpsShowNanu&num=2019104</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"-moz-fixed",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"-moz-fixed",serif">The updated antenna correction model is available at
<br>
<a href="ftp://ftp.igs.org/pub/station/general/igs14_1977.atx">ftp://ftp.igs.org/pub/station/general/igs14_1992.atx</a>
<br>
or <br>
<a href="ftp://ftp.igs.org/pub/station/general/igs14.atx">ftp://ftp.igs.org/pub/station/general/igs14.atx</a>
<br>
<br>
<br>
With best regards, <br>
Arturo Villiger <br>
on behalf of the IGS Antenna Working Group</span><o:p></o:p></p>
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