See map:
http://www.radiodataservices.com/wwia_vs_wpoz.gif
WWIA could never have interfered or "jammed" WPOZ. If you look at this posted map link, you can clearly see that WWIA's interfering contour (54 dBU 50,10) as a first adjacent channel station to WPOZ's protected contours (60 dBU 50,50) has miles of separation and is more than compliant with all Federal Communications Commission rules. The stations' contours shown on the map would have had to overlap to cause FCC-defined interference and the Commission likely would have never approved such a proposal if that was the case.