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SLR-Mail No.396

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Date:1999-08-06 00:03:00
Sender:Van S. Husson/NASA SLR <HussonV@thorin.atsc.allied.com (Husson, Van)>
Subject:[SLR-Mail] No. 396: Hollas (7210) Time Bias Problems
Author:Van S. Husson
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SLR Electronic Mail 1999-08-06 00:03:00 UTC Message No. 396
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Author: Van S. Husson/NASA SLR
Subject: Hollas (7210) Time Bias Problems



The SLR system (7210, HOLLAS) on Haleakala, Hawaii has been experiencing
cesium problems which has impacted the quality of their data since early
June 1999. The drift rate of the cesium has been uncontrollable and has
induced varying levels of time biases from 0.5 to more than 20
microseconds. However, the good news is the time biases during this
period are recoverable to better than 0.2 microseconds.

The station is being sent a new station clock that will remedy this
problem. Once the new clock is installed and verified, we will provide
algorithms to recover all their data since 2 June 1999. We regret any
inconvenience this may have caused.


From: HussonV@thorin.atsc.allied.com (Husson, Van)

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