<br><font size=2 face="sans-serif">Author: John Beavan</font>
<br>
<br><font size=2 face="sans-serif">Over the next few weeks to months we
are planning to upgrade five New Zealand-based IGS stations to GNSS-capable
Trimble NetR9 receivers with Zephyr Geodetic II antennas (TRM55971.00).
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<br>
<br><font size=2 face="sans-serif">These stations are currently runnning
NetRS receivers and Zephyr Geodetic I antennas (except CHTI which already
has a Geodetic II antenna). </font>
<br>
<br><font size=2 face="sans-serif">To provide some calibration of time
series offsets at the equipment change we intend to run a Trimble 5700
with Zephyr Geodetic I antenna at a nearby (< 1 km) site for 3 days
before and after each exchange. We may not do this at CHTI since
the installed antenna is already the new model. </font>
<br>
<br><font size=2 face="sans-serif">We believe these may be the first NetR9
receivers in the IGS network, so if anyone has any concerns about the planned
upgrades please let me know. </font>
<br>
<br><font size=2 face="sans-serif">Best regards,</font>
<br><font size=2 face="sans-serif">John</font>
<br><font size=2 face="sans-serif">--------------------------------------------------------------------------------------<br>
Dr John Beavan, GNS Science - Te Pu Ao, <br>
1 Fairway Drive, PO Box 30368, Lower Hutt, New Zealand<br>
Tel: +64 4 570 4641 Fax: +64 4 570 1440 Mob: 027 221 8861<br>
Email: j.beavan@gns.cri.nz Web: www.gns.cri.nz<br>
</font>
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