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<p class="MsoNormal"><span lang="EN-US">Dear colleagues<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The absolute IGS antenna correction file (igs20_wwww.atx) has been updated.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The new release is called 'igs20_2309.atx'. It contains the following changes:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<ol style="margin-top:0cm" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:-15.75pt;mso-list:l1 level1 lfo3">
<span lang="EN-US">According to GPS NANU 2024020 (</span><a href="https://www.navcen.uscg.gov/sites/default/files/gps/nanu/2024/2024020.nnu"><span lang="EN-US">navcen.uscg.gov/sites/default/files/gps/nanu/2024/2024020.nnu</span></a><span lang="EN-US">) BLOCK
IIR-M satellite G049 will resume transmitting L-Band utilizing PRN 01 starting from the 22. April 2024.<o:p></o:p></span></li></ol>
<p class="MsoListParagraph" style="margin-left:20.25pt"><span lang="EN-US">Therefore, following entry has been added:<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:20.25pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="margin-left:20.25pt"><span lang="EN-US">G01 (G049): 22. April 2024<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:18.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:18.0pt"><span lang="EN-US">GPS NANU 2024020:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:18.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black">NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2024020 NANU TYPE: GENERAL<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black">*** GENERAL MESSAGE TO ALL GPS USERS ***<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black">On approximately 22 APR 2024, SVN49 will resume transmitting L-band utilizing PRN01; at L-band activation, SVN49/PRN01 will be unusable until further notice
(additionally, no broadcast almanacs will include SVN49/PRN01 until further notice).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black">*** GENERAL MESSAGE TO ALL GPS USERS ***<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:18.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<ol style="margin-top:0cm" start="2" type="1">
<li class="MsoListParagraph" style="margin-left:-15.75pt;mso-list:l1 level1 lfo3">
<span lang="EN-US">According to CODE GPS BLOCK IIF satellite G063 (G01)has stopped transmitting on the 11. April 2024. Therefore, following decommission date was added:<o:p></o:p></span></li></ol>
<p class="MsoNormal" style="margin-left:2.25pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">G01 (G063): 11. April 2024<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The updated antenna correction model is available at<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><a href="https://files.igs.org/pub/station/general/igs20_2309.atx.gz"><span lang="EN-US">https://files.igs.org/pub/station/general/igs20_2309.atx.gz</span></a><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">and<o:p></o:p></span></p>
<p class="MsoNormal"><a href="https://files.igs.org/pub/station/general/igs20.atx"><span lang="EN-US">https://files.igs.org/pub/station/general/igs20.atx</span></a><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal">Best regards,<o:p></o:p></p>
<p class="MsoNormal">Arturo<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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