I have found that a common source of noise on beverage systems is the need to use the small F type connectors and the crappy F type coax that is often on the jumpers as well as just converting it all to the final input to your receiver.
Try the simplest but clean and checked coax directly from the beverage to the receiver first to see if there is any noise. Then add in the elements that might be present on the normal way into the shack and through any items along the way. I had a high pass broadcast filter that was the cause of noise at one point. A beverage with no preamp should be MUCH quieter than your transmit antenna on 80. In my case it's a 6 S unit drop. Ed N1UR _________________ Topband Reflector Archives - http://www.contesting.com/_topband
