At the time, WIXZ 1360 (pronounced WIXEE 1360) was playing "much more solid rockin' gold" and Limbaugh's voice and mannerisms are unmistakable.
Instead of Limbaugh's syndicated EIB Radio Network, he claimed to be broadcasting on the "Jeff Christie Radio Network". Among other bits, Limbaugh places a prank call to a power plant.
The second recording is Limbaugh jocking at KQV Radio (14 K) in Pittsburgh. Both airchecks are a great peek into the beginning of Limbaugh's career on radio.
Listen: Hear Rush Limbaugh as "Jeff Christie" at www.youtube.com.