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<body lang="DE-CH" link="#0563C1" vlink="#954F72" style="word-wrap:break-word">
<div class="WordSection1">
<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_2415'. It contains the following changes:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="margin-left:0cm"><span lang="EN-US"><o:p> </o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph" style="color:black;margin-left:0cm;mso-list:l0 level1 lfo3">
<span lang="EN-US" style="color:windowtext">BeiDou PRN switches. According to IGS satellite meta data of GNSS satellites, release 2415 (</span><span style="color:windowtext"><a href="https://files.igs.org/pub/station/general/igs_satellite_metadata_2415.snx"><span lang="EN-US">files.igs.org/pub/station/general/igs_satellite_metadata_2415.snx</span></a></span><span lang="EN-US" style="color:windowtext">).
Therefore the entries have been adjusted according to following entries in the satellite metadata file:</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";mso-fareast-language:DE-CH"><o:p></o:p></span></li></ul>
<p class="MsoListParagraph"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black;mso-fareast-language:DE-CH"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:18.0pt"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black;mso-fareast-language:DE-CH"> 10-Apr-2026 C220 PRN change, C005 decommissioning
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:18.0pt"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black;mso-fareast-language:DE-CH"> 16-Apr-2026 C221/C224/C229 PRN switches, C007/C008/C016 decommissioning
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:18.0pt"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black;mso-fareast-language:DE-CH"> 17-Apr-2026 C017/C019/C230 PRN switches, C009/C010/C018 decommissioning
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:18.0pt"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black;mso-fareast-language:DE-CH"> 18-Apr-2026 G082 plane added; C217/C223/C225/C226/C232/C234/C235 PRN
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:18.0pt"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black;mso-fareast-language:DE-CH"> switches, C012/C015/C020/C101 decommissioning
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:18.0pt"><span lang="EN-US" style="font-size:10.0pt;font-family:"Courier New";color:black;mso-fareast-language:DE-CH"> 20-Apr-2026 C222/C231/C233 PRN switches, C006/C013 decommissioning
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoListParagraph"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo3"><span lang="EN-US">3 new antenna calibrations:<o:p></o:p></span></li></ul>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New"">HXCCSX600A NONE (calibrated by Geo++ GmbH)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New"">HXCGPS1000 NONE (calibrated by Geo++ GmbH)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New"">SKFSTREAM4D NONE (calibrated by Geo++ GmbH)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="m6936121351531566283msoplaintext"><span lang="EN-US" style="mso-fareast-language:EN-US">The updated antenna correction model is available at<o:p></o:p></span></p>
<p class="m6936121351531566283msoplaintext"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="m6936121351531566283msoplaintext"><span lang="EN-US" style="mso-fareast-language:EN-US">IGS ANTEX 2.0:<o:p></o:p></span></p>
<p class="MsoPlainText"><a href="https://files.igs.org/pub/station/general/igs20_2415_sat.atx2.gz"><span lang="EN-US">https://files.igs.org/pub/station/general/igs20_2415_sat.atx2.gz</span></a><span lang="EN-US"><o:p></o:p></span></p>
<p class="m6936121351531566283msoplaintext"><a href="https://files.igs.org/pub/station/general/igs20_2415_rcv.atx2.gz"><span lang="EN-US">https://files.igs.org/pub/station/general/igs20_2415_rcv.atx2.gz</span></a><span lang="EN-US"><o:p></o:p></span></p>
<p class="m6936121351531566283msoplaintext"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="m6936121351531566283msoplaintext"><span lang="EN-US" style="mso-fareast-language:EN-US">IGS ANTEX 1.4:<o:p></o:p></span></p>
<p class="MsoPlainText"><a href="https://files.igs.org/pub/station/general/igs20_2415.atx.gz"><span lang="EN-US">https://files.igs.org/pub/station/general/igs20_2415.atx.gz</span></a><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">and<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><a href="https://files.igs.org/pub/station/general/igs20.atx">https://files.igs.org/pub/station/general/igs20.atx</a><o:p></o:p></span></p>
<p class="MsoPlainText"><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"><span lang="EN-GB">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Arturo<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"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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