Total posts : 45366
I think you first need to identify your target audience. Do you want to be listened to in the car, at home, in local businesses?
Where is the audience located? Concentrated in a few areas, or evenly spread out?
Because a single AM Part 15 transmitter gets a maximum range of about 1 mile to a sensitive car receiver. Less to ordinary home consumer radios. And obstructions (particularly metal-based) and interference can play havoc with your signal as well.
If you really want to cover that entire town over-the-air, you may have to consider multiple transmitters, and there are a host of problems with that. Do a search on this site for discussions surrounding the problems there.
Have you considered that you may be able to get away with a single transmitter located near the greatest concentration of listeners, and augmenting that with an internet stream that could be picked up within homes and businesses?
Just a few thoughts. If you’re giving people what they want to hear, they’ll go out of their way to listen in. I had people actually drive across the little island I used to live on, and park their cars near my transmitter just to listen to the station (my target audience was people in their cars in the ferry lineup – anybody else except those close by listened via the internet stream).