DQRID : D120301.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
07/27/2009162710/19/20101237Incorrect
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Subject:
GRW/WACR/M1 - Transmit power drop outs
DataStreams:grwwacrspeccmaskcopolM1.a0, grwwacrM1.b1, grwwacrspeccmaskxpolM1.a0
Description:
At approximately 16:27 GMT on 20090727, txpower began intermittently dropping out and 
reporting slightly negative values.  This issue continued intermittently through 20090807 
when it stopped occurring.  The problem resumed 20091006 and continued to occur on a daily 
basis until the monitor detector was replaced 20101019.

The transmit power as measured by the detector after replacement was approximately 1.3 dB 
less than when it failed.  Reflectivity measurements have a +0/-1.3 dBZ of additional 
uncertainty for this period of time.
Suggestions: 
Measurements:grwwacrspeccmaskcopolM1.a0:
  • Reflectivity
  • txpower
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grwwacrspeccmaskxpolM1.a0:
  • txpower
  • Reflectivity
more
grwwacrM1.b1:
  • Reflectivity
  • txpower
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