[evlatests] New (?) X-band RFI

[rperley]

In a recent run, some strong RFI, seen only short spacings only (due to 
fringe-winding and A config) was seen between:

10.950 and 11.190 GHz.

The spectral characteristics show these to be in 6 spectral 'chunks', 
each 40 MHz wide.

The RFI was not seen on the (northern) calibrator, but was obvious on 
the target source, located at Dec = -5.5  So, likely a geostationary 
satellite.

@Dan:  Any idea what's responsible?

Rick