The Potential Broadcasting Trust has sold Country "Red 102.3" WCAT-FM Carlisle/Harrisburg, PA to Harold Swidler's Radio Carlisle for $405,000. Radio Carlisle is the owner of crosstown "Country Gold Radio" WIOO. WIOO is an AM daytimer that is also heard on translator 97.9 W250AP in Carlisle and 1480 WEEO/93.9 W230AX Shippensburg, PA. The latter two stations,