A discussion on the towers reflector mentioned, in passing, that a current
balun helped lower received noise. The discussion was about something else
and this aspect was not explored.

Is this common? I had never heard of it before, but I many holes in my
understanding of antennas. Under what circumstances would this apply? Where
would the balun (toroids) be placed? Feed point or at bottom of tower? (My
particular interest is for use with a half sloper and for 160/80/40 meters.)

Bill
W2WO