jim@jpes.com wrote:
>  BALUN is a contraction for BALanced-UNbalanced.  An unbalanced line
> is
> one in which one side has a
>  different impedance with respect to ground.

Now that we've beat to death what a balun is, I agree with Russell that
these coils are unlikely to be deliberate baluns.

My guess is the reason for the extra wire is not electrical.  They may be
service loops to make future changes easier.  It's hard to tell from a
single picture at a single point in time, but this could be a temporary
installation.  Maybe the phone pole is scheduled to be moved soon.
Sometimes things are done for short term expedience or don't make sense
without context within the bigger picture.


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