Topband: Wideband interference

[Barry N1EU]

Sorry for yet another plea for help identifying an interference source.
Please see the video/audio I just uploaded to http://youtu.be/AN9VNCanEJM

The panadapter clearly shows wideband rhythmic interference centered on the
160M band.  The interference is predominant in the northeast Beverage and
also audible on the inverted L.  There's audio in the recording for cw and
AM.

Is this consistent with a faulty high pressure street light?

Thanks & 73,
Barry N1EU