1510 changes

Garrett Wollman wollman@bimajority.org
Sun Apr 6 17:28:59 EDT 2008

<<On Sun, 6 Apr 2008 14:55:52 -0500, "Laurence Glavin" <lglavin@mail.com> said:

> BTW, speaking of long-distance AM propagation...  could changes at
> Spoke-ann's KGA-AM 1510 allow WWZN to loosen up its nighttime signal
> to NNW.

I don't think so; the current WWZN array protects KGA mostly as a
side-effect of the protection it must give to WLAC in Nashville.  (If
I remember correctly, the pattern is symmetric about the east-west
axis, so increasing radiation to the NNW would also increase radiation
to the SSW.  But it's a four-tower rhombus and you can do lots of
funky stuff with four-tower rhombi.)

It appears that KGA's application would allow WLAC to increase its
radiation towards the northwest somewhat, although WLAC is much closer
to its class-A first-adjacents in Minneapolis and Oklahoma City.
(IIRC, WLAC's array is a bit less flexible.)


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