I haven't listened to AM radio since the 70's. And I never listen to talk radio. Radio is for music. TV is for talk.
Then you missed an awesome non-partisan fount of information, one of the few voices that managed to gain a nation wide status without being controlled by a gate keeper.
In the late 80's - early 90's Harder was publicizing the governments decisions to not protect the country from EMP and bringing forth scientists and engineers who had created the technology and devices to protect our nations electric grids. He publicized what NAFTA was, the people who was pushing it and their reasons. He championed a lot of pro-US causes directly in opposition to DC. He publicized what the government behind the government was planning next and he did it with their own publications. He was a prodigious intellect and dedicated to helping mom and pop Americans.
These alt-media yahoos we got these days couldn't hold a candle to him.