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I wrote earlier noting that the power gain of ea21 in the Vertical polarization was low by a factor of about ten. </div>
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It isn't always like this. Over the past two nights, we've had 9 short (40 minute) observations of a strong calibrator. For all antennas except ea21V, the gains are wonderfully stable, and nearly the same between all antennas. Just what we like to see. </div>
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For ea21, the 'H' polarization is like the other antennas. But the 'V' polarization is very different:</div>
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For 6 of the 9 observations, the correlated power is about a factor of ten low. For the other three observations, it's close to the other antennas. But, for one of these, the antenna gain changed from a 'good' state to the 'bad' state steadily over an ~8-minute
duration. </div>
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Very strange behavior. </div>
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Sadly, ea21 is on pad E72, making it hard to get to ...</div>
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Does anybody have an idea of what is wrong here? </div>
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Rick<br>
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