On Thu, 28 Apr 2005 14:19:18 +0000 (UTC), after apparently consuming a
750 ml bottle of California red, "Reg Edwards"
wrote:

W2DU's device is not a balun. It has no ratio - it is just a choke.
It behaves in the same way as a single bifilar winding on a ferrite
rod, or on a ring.

Wherever did you get the idea that a balun "must have a ratio?"

"Balun" is a contraction of 'Bal'anced to 'Un'balanced. Walt's device
certainly fulfills this function.

[remaining bafflegab snipped]