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<p class="MsoNormal">Updates on the ea21 P-band , V pol: <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I checked the latest 4P stress test (taken on Monday the 16<sup>th</sup>) as well as the yesterday’s systartP and all looks good.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks all for the help! <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Lilia <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="color:black">From:
</span></b><span style="color:black">evlatests <evlatests-bounces@listmgr.nrao.edu> on behalf of Rob Long via evlatests <evlatests@listmgr.nrao.edu><br>
<b>Date: </b>Friday, November 22, 2024 at 09:08<br>
<b>To: </b>Rick Perley <rperley@nrao.edu>, evlatests <evlatests@nrao.edu><br>
<b>Subject: </b>Re: [evlatests] ea 21, V-pol P-band -- still weak<o:p></o:p></span></p>
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<p>Hey Rick,<o:p></o:p></p>
<p><o:p> </o:p></p>
<p>We checked vlite data this morning and sure enough, the signal looked great after maintenance and then just dropped out! We obviously have more than one issue on that antenna.<o:p></o:p></p>
<p><o:p> </o:p></p>
<p>We will be out to continue the hunt next maintenance day.<o:p></o:p></p>
<p><o:p> </o:p></p>
<p>Rob<o:p></o:p></p>
<p><o:p> </o:p></p>
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<p class="MsoNormal">On 11/21/2024 4:37 PM, Rick Perley via evlatests wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="color:black">New data taken at P-band show that the gains for ea21, 'V' polarization are still low by about an order of magnitude. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:black">An additional feature has appeared: The passband now has a significant ripple of 4 MHz period — corresponding to a cable reflection of length about 35 meters (free space equivalent). <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Rick<o:p></o:p></span></p>
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<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>evlatests mailing list<o:p></o:p></pre>
<pre><a href="mailto:evlatests@listmgr.nrao.edu">evlatests@listmgr.nrao.edu</a><o:p></o:p></pre>
<pre><a href="https://listmgr.nrao.edu/mailman/listinfo/evlatests">https://listmgr.nrao.edu/mailman/listinfo/evlatests</a><o:p></o:p></pre>
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