On Tue, 27 Aug 2013 08:41:02 -0700, "Wayne"
wrote:

Today I saw a Time Warner Cable minivan trolling through the neighborhood.

It appeared to have a four antenna DF array on the roof with vertical
lengths of about 2-3 feet.

What's up with that?

It's a doppler direction finder array, used to locate cable leaks and
ingres (leakage into the cable). Something like these perahaps:
http://kn2c.us/radio-df-ddf2020t/
http://www.wavetracker.com
http://www.google.com/patents/US6801162



--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558