[evlatests] RFI in X-band

Vivek Dhawan vdhawan at nrao.edu
Wed Oct 16 13:37:09 EDT 2019


This is a known offender, almost always present. I captured a screen
shot of it once, see attached. My guess is airborne weather radars.

RCP top, LCP bottom, 9-11GHz, peak-hold from Revnell's DTS spectral
sampler.

On 10/16/19 11:02 AM, Rick Perley via evlatests wrote:
>     I'm reducing some D-configuration X-band data, taken last November.
> 
>     There is a curious RFI signal seen between ~9320 and 9380 MHz. It's very 
> erratic (meaning, short time-scale), and quite broad-band. Also quite strong.
> 
>     Any idea of where it's coming from?  All antennas seem equally affected, 
> suggesting a distant origin.  But, given the data is from D configuration, this 
> is a weak suggestion.
> 
>     Rick
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