[evlatests] Noisy C-band antennas?

Rick Perley rperley at nrao.edu
Thu Jun 29 16:55:04 EDT 2023


Some months ago, Pedro noted that certain antennas were especially noisy 
(low SNR) for some antennas and spectral windows, when using 3-bit 
samplers.  From my own data, I confirmed this.

The recent data referred to in my last circular allows a check on this 
situation -- the data were taken with 3-bit sampler.

The 'noisy' effect is completely gone!  All antennas, in all spectral 
windows, have exactly the expected sensitivity and gains.

Pedro plans to take some data, to confirm.

Rick



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