Sometimes, at the end of a public service announcement, a DJ will say, "For more information, call us..." This doesn't always make sense because sometimes, all the information the announcer has is in the copy (s)he just read. In May 1992, I noted this on the air.
I said, "For more information on recycling your aluminum, call us here at KCOU." I added, "That's according to the copy. However, if you call us, we will just tell you to recycle it yourself..."
To be clear, recycling aluminum is a good idea. However, there was no list of recycling centers included with the copy, so there was no further information to provide.