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I've noted in earlier posts about the 'flickering' RFI that we commonly see at P-band. </div>
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We ran another P-band test yesterday afternoon, with the 'RFI Blanking' turned on, to see if this would remove the observed effects (most a small gain compression, lasting typically 5 to 12 seconds). </div>
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Perhaps unsurprisingly, it did not. The cause of the problem is likely too slow in time to be caught by the on-line flagging. The durations of the observed RFI 'flickers' and accompanying gain compression is typically 5 to 12 seconds. <br>
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Other notes: </div>
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ea21V is still low in SNR by about a factor of 10. It also has a sinusoidal bandpass shape, indicating a strong reflection in the signal chain. The period of the reflection is 3 MHz, indicating the reflecting points are about 50 meters apart (free space equivalent).
So the problem is in a long cable. </div>
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The gains in ea11 show an SNR down by about a factor of 2, in both polarizations.</div>
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