Sun Apr 6 17:28:59 EDT 2008
<<On Sun, 6 Apr 2008 14:55:52 -0500, "Laurence Glavin" <email@example.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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