[IGSSTATION-60]: PIE1: upgrade work performed

[Oivind Ruud]

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IGS Station Mail          25 Jun 16:58:00 PDT 2004      Message Number 60
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Author: Oivind Ruud, UNAVCO

Dear Colleagues,

Please be aware of the following changes at the NRAO Pie Town VLBA Station (PIE1). A
new Ashtech CGRS (UZ-12) receiver has been installed on a powered splitter from the
original antenna. The original TurboRogue receiver (PIE1) is also now tracking off
the same splitter. Both receivers are using the original AOA chokering antenna. PIE1
data publishing is continuing as before.

The TurboRogue is still using the H-Maser 5 MHz external frequency standard. The
Ashtech UZ-12 is using its internal clock. There were a few outages (both in tracking
and 5 MHz clock input) between about 16:00 - 23:00 UTC on June 23rd while this work
was on-going. A new IGS log and notification will be sent when the PIE1 receiver
change has been made final.

We would like to acknowledge the help and assistance of the Pie Town VLBA Station
personnel during this new installation and upgrade.

Maintenance and operations of the PIE1 station is a collaborative effort supported by
JPL, UNAVCO, and the NRAO Pie Town VLBA Station with funding provided by NASA's Earth
Science Enterprise.

Best regards,

    -Oivind Ruud