I don't think you can find RNC talkiing points on any conservative broadcast any time.
Often conservatives and liberals will be talking about the same subject depending on the news of the day.
But talking points?
No, that's just lib myth.
I have, in fact heard this happen with several different talkers using precisely the same unlikely framing of a recent event on different stations witing mimutes of one another and then have then heard the same terms used by Limbaugh and Savage and others before the day was out, each one using the same off phrasing of some issue of the moment. It passes belief that it could be an accident.
Anyway, there was a small scandal in that business some ten years ago with someone interception what rather appeared to be a list of suggested topics, arguments, and phrasing (spinning) of the issue in, if I recall correctly, a fax coming from the RNC to various radio talkers. This was, of course, flatly denied by the RNC.
As for your unsupported assertion that it is not true that you can hear this sort of thing running day and night from coast to coast on radio stations owned by a small mumber of monoplist broadcasting corporations, you obviously don't get around this country much or you woudl know this to be true. I have been in every state except three and I am here to report to you from personal experience that it is true.
Why would I listen to such tripe? That's all that's on unless you like yowling country musicians or rappers. There was a time when the late night radio crackled with all manner of bizarre preachers and charlatans selling snake oil. Lately the snake oil sellers are back but mostly it's just RNC day and night from coast to coast and they still couldn't stop Obama's election despite their best efforts. Interesting.