you can have a broadcast tower that's too tall for 160 m. which results in high angle lobes. For this to work well you need one for a station that's up near the top of the broadcast band. A good way to tell is whether or not the tower is lamped. The ground system certainly helps but a ham can put in a good ground system on his own monopole. Don't believe that only broadcasters can do this, although nowadays a lot of radials on 160 costs a lot more than they did 25 years ago. These antennas will likely stink on receive. You'll just pick up noise. Expect to have to set up some sort of separate receive arrangement. By the way, there are and have been a few hams with base fed insulated towers and ground systems on 160. They don't chase DX or contest so you may not have run across them.
73 Rob K5UJ _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
