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<font face="monospace"><span
style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
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Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;
color:black">Dear IGS colleagues,</span><span
style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New
Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;
color:black"></span><br>
<span
style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New
Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;
color:black"></span><br>
<span
style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New
Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;
color:black">The absolute IGS antenna correction file
(igs14_wwww.atx) has been</span><br>
</font>
<font face="monospace"><span
style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New
Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;
color:black">updated. The new release is called
'igs14_2194.atx'. It contains</span><br>
</font>
<font face="monospace"><span
style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New
Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;
color:black">the following changes:</span><br>
</font>
<font face="monospace"><br>
1) According to NANU 2022002 , BLOCK IIR-A satellite SVN41
(2000-071A)
will approximately on 20. January 2022 resume transmitting
utilizing PRN 22.</font></div>
<div style=""><font face="monospace">Therefore, the following
satellite has been added to the igs14.atx starting from 20.
January 2022:</font></div>
<div style=""><font face="monospace"><br>
</font></div>
<div style=""><font face="monospace">G22 (041)</font></div>
<div style=""><font face="monospace"><br>
</font></div>
<div style=""><font face="monospace">NANU 2022002:<br>
</font></div>
<div style=""><font face="monospace"><br>
*** GENERAL MESSAGE TO ALL GPS USERS ***<br>
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2022002 NANU TYPE:
GENERAL<br>
*** GENERAL MESSAGE TO ALL GPS USERS ***<br>
ON APPROXIMATELY 20 JAN 2022, SVN41 WILL RESUME TRANSMITTING
L-BAND UTILIZING PRN22.<br>
<br>
ON 20 JAN 2022, AFTER 2200Z, GPS WILL TRANSITION SVN41
(PRN22) INTO THE BROADCAST ALMANAC FOR ALL SATELLITES:<br>
- THE ALMANAC TRANSITION, ACCOMPLISHED ONE SATELLITE AT A
TIME, WILL REQUIRE APPROXIMATELY 24 HOURS TO COMPLETE<br>
- BEFORE, DURING, AND AFTER TRANSITION SVN41 (PRN22) WILL
REMAIN UNUSABLE UNTIL FURTHER NOTICE<br>
- FUTURE NANUS WILL NOTIFY USERS OF ANY CHANGES TO THE ABOVE
STATED STATUS<br>
*** GENERAL MESSAGE TO ALL GPS USERS ***<br>
<br>
POC: CIVILIAN - NAVCEN AT 703-313-5900,
<a class="moz-txt-link-freetext" href="HTTPS://WWW.NAVCEN.USCG.GOV">HTTPS://WWW.NAVCEN.USCG.GOV</a><br>
MILITARY - GPS OPERATIONS CENTER AT
<a class="moz-txt-link-freetext" href="HTTPS://GPS.AFSPC.AF.MIL/GPSOC">HTTPS://GPS.AFSPC.AF.MIL/GPSOC</a>, DSN 560-2541,<br>
COMM 719-567-2541, <a class="moz-txt-link-abbreviated" href="mailto:GPSOPERATIONSCENTER@US.AF.MIL">GPSOPERATIONSCENTER@US.AF.MIL</a>,
<a class="moz-txt-link-freetext" href="HTTPS://GPS.AFSPC.AF.MIL">HTTPS://GPS.AFSPC.AF.MIL</a> <br>
MILITARY ALTERNATE - JOINT SPACE OPERATIONS CENTER, DSN
276-3526. COMM 805-606-3526.<br>
<a class="moz-txt-link-abbreviated" href="mailto:JSPOCCOMBATOPS@US.AF.MIL">JSPOCCOMBATOPS@US.AF.MIL</a></font></div>
<div style=""><font face="monospace"><br>
</font></div>
<div style=""><font face="monospace">2) According to NANU
2022001, BLOCK IIR-B satellite SVN47 (2003-058A) has been
decommissioned on January 18, 2022.</font></div>
<font face="monospace"> The following decommission date has
been added: <br>
</font></div>
<div dir="ltr" style="font-size: 12pt; color: rgb(0, 0, 0);"><font
face="monospace"><br>
</font></div>
<div dir="ltr" style="font-size: 12pt; color: rgb(0, 0, 0);"><font
face="monospace"> G22 (G047): 18 January 2022</font>
<div style=""><font face="monospace"><br>
</font></div>
<div style=""><font face="monospace">NANU 2022001:<br>
<br>
SVN47 (PRN22) DECOMMISSIONING JDAY 018/2200<br>
NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2022001<br>
SUBJ: SVN47 (PRN22) DECOMMISSIONING JDAY 018/2200 <br>
1. NANU TYPE: DECOM<br>
NANU NUMBER: 2022001<br>
NANU DTG: 182156Z JAN 2022<br>
REFERENCE NANU: 2021058<br>
REF NANU DTG: 021637Z DEC 2021<br>
SVN: 47<br>
PRN: 22<br>
UNUSABLE START JDAY: 336<br>
UNUSABLE START TIME ZULU: 1637<br>
UNUSABLE START CALENDAR DATE: 02 DEC 2021<br>
DECOMMISSIONING START JDAY: 018<br>
DECOMMISSIONING START TIME ZULU: 2200<br>
DECOMMISSIONING START CALENDAR DATE: 18 JAN 2022<br>
<span
style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New
Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;
color:black"> </span><br>
</font>
<font face="monospace"><br>
</font>
<font face="monospace"><span
style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New
Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;
color:black">3) Three additional antenna type calibration
has been added that were performed by Geo++ GmbH: </span><br>
</font>
<font face="monospace"><br>
<span style="font-size: 12pt;"> - One robot calibration
provided by Harxon Corporation has been added: <br>
</span><span style="font-size: 12pt;"> </span><span
style="font-size: 12pt;">HXCCGX611A HXCM</span></font></div>
<div style=""><font face="monospace"><span style="font-size:
12pt;"><br>
</span></font></div>
<div style=""><font face="monospace"><span style="font-size:
12pt;"><span style="font-size: 12pt;"> - One robot
calibration provided by Stonex SRL has been added: <br>
</span><span style="font-size: 12pt;"> </span></span><span
style="font-size: 12pt;">STXSA1000 NONE</span></font></div>
<div style=""><font face="monospace"><span style="font-size:
12pt;"><span style="font-size: 12pt;"><br>
</span></span></font></div>
<div style=""><font face="monospace"><span style="font-size:
12pt;"><span style="font-size: 12pt;"><span
style="font-size: 12pt;"> - One robot calibration
provided by TI Asahi Co., Ltd. has been added: <br>
</span><span style="font-size: 12pt;"> </span></span></span><span
style="font-size: 12pt;">TIAPENG7N NONE</span></font></div>
<div style=""><font face="monospace"><span style="font-size:
12pt;"><br>
</span></font></div>
<div style=""><font face="monospace"><span style="font-size:
12pt;"><br>
</span></font></div>
<div style=""><font face="monospace"><span style="font-size:
12pt;"><br>
</span></font></div>
<div style=""><font face="monospace"><span
style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New
Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;
color:black"></span><br>
</font>
<font face="monospace"><span
style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New
Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;
color:black">The updated antenna correction model is
available at</span><br>
</font>
<font face="monospace"><span
style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New
Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;
color:black"></span></font></div>
<div style="">
<pre class="moz-quote-pre" wrap=""><a class="moz-txt-link-freetext" href="https://files.igs.org/pub/station/general/igs14_2194.atx">https://files.igs.org/pub/station/general/igs14_2194.atx</a>
and
<a class="moz-txt-link-freetext" href="https://files.igs.org/pub/station/general/igs14.atx">https://files.igs.org/pub/station/general/igs14.atx</a>
</pre>
<font face="monospace"><br>
</font>
<font face="monospace"><span
style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New
Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;
color:black">With best regards,</span><br>
</font>
<font face="monospace"><br>
</font>
<font face="monospace"><span
style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New
Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;
color:black">Arturo Villiger</span><br>
</font>
<font face="monospace"><br>
</font>
<font face="monospace"><span
style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New
Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;
color:black">on behalf of the IGS Antenna Working Group</span></font><font
face="monospace"><span
style="mso-ascii-font-family:Calibri;mso-fareast-font-family:
"Times New
Roman";mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;
color:black"></span></font><br>
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