The point of the Kiwa is the nulls, and the tilting is necessary to
achieve that. (You get good loop nulls by building it so that it has
as small a response as possible to electric fields, with electrical
balancing and cancellation. Otherwise the electric field signal fills
every null, being 90 degrees out of phase from the signal you're
working with and can otherwise cancel exactly.)

The regeneration helps, by narrowing the bandwidth, in knocking down
the adjacent channel station (also tune away from it on the radio),
and I suppose, if you have a deaf radio, it can bring the signal up
out of the radio's internal noise. A good radio doesn't need the latter
effect.

And it's particularly nicely constructed, which is not nothing.

The fact that it's tuned means that you can't use it very well in
an array with other antennas to cancel stations, because the same
station has a different gain across its audio bandwidth; but by itself
it's pretty good for cancelling.

--
Ron Hardin


On the internet, nobody knows you're a jerk.