RW Shambach is a name I haven't heard in decades. He was screaming on WJYM, Bowling Green, Ohio after Jimmy Swaggart took over, but years before it became "all Jimmy all the time". They also carried Oliver B. Green, who died in 1979, and is still heard on many stations.
I haven't heard for myself but have been told that there are episodes of J. Vernon McGee's "Through the Bible" referring to President Nixon in the present tense.
I've been somewhat fascinated by the Armstrongs (Herbert W. and Garner Ted) though not a believer in their doctrine. Herbert practically started the business of media preaching in the 30s. Garner Ted sounded like a news commentator, not a preacher. Nothing could freak out a kid more than Garner Ted coming in on a distant 50kW station talking in graphic terms about nuclear holocaust). about Garner Ted was kicked out and H.W. took the show back while GT started his own offshoot church and show. Once H.W. passed a couple of other speakers were brought in, but eventually the Worldwide Church of God became a more standard Evangelical denomination. Offshoots continue Armstrong's media ministry and doctrines, probably the most known is Gerald Flurry, (The Key of David), who owns the copyrights on the elder Armstrongs' books.
All interesting stuff.