Jim Brown wrote:
> This discussion applies to differential coupling. There's also common
> mode coupling, of course, and antennas fed with ladder line rarely have
> a common mode choke. But they NEED a common mode choke, because nearly
> all ham antennas have at least SOME unbalance by virtue of asymmetry in
> their surroundings, their length, etc. Yes, coax has more loss and it
Then there is always the exception to the rule:
I use common mode chokes at both ends of my open wire line.
It never occurred to me to build it any other way.
Maybe that is why I don't have any trouble with it picking up
noise.
Rick N6RK
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