[evlatests] VLA RFI sweep 4/2020

[Emmanuel Momjian]

The spectra of the April 19, 2020, RFI sweep are now posed online at
https://science.nrao.edu/facilities/vla/observing/RFI/April%202020%20C-configuration/April-2020-C-configuration

For each receiver band there are also subband based plots (PDF files) 
linked from their respective pages to give a more zoomed-in view.

For reference, previous RFI sweeps are posted at:

https://science.nrao.edu/facilities/vla/docs/manuals/obsguide/rfi#section-4

Emmanuel