You can pretty much use facts and descriptions without colorful adjectives or a call to action. If I'm a little off or wrong, please someone correct me. Here's an example:
"You can find the new John Deere lawn tractor at Smith's Tractors at 1414 Jones Road in Palm Springs. John Deere also offers a line of weed eaters, plows, tillers and other farm equipment. Smith's Tractors is open Monday through Friday from 10am to 10pm and Saturday from 8am to 10pm and closed on Sundays. Their website is
www.smithtractors.com and their phone number is 555-5555. WWWW is grateful to Smith Tractors for being a WWWW Business Underwriting Partner."
So, you can't say, "Come on down", "There's a sale", "John Deere is better than Cub Cadet", or "The New darker, better than ever green tractor."
Now...with non-profit organizations like churches or community organizations...you can run call to action and everything you'd do if it were a full-blown commercial. Some stations will tag the end of these spots with, "Crossroads Church is a Non-Profit Organization" just to cover themselves and differentiate between the two types.
Someone else may have some other strategies to share as well...