If you're looking for an "entry level" position in broadcasting, then go knock on every radio station's door in West Tennessee or where ever you plan to call home.
The most important thing you can do is go out and apply for that position in person. Be persistent and be passionate and be willing.
There are a number of entry level positions available all over the area. But they might just be a few hours on the weekends or helping out at a remote or ballgame. Be willing to do anything.
Take your resume with you, fill out an application, be ready to move, work weekends, nights, and do the grunt work, meaning run the board on ball games, etc. and take be surprised if you're asked to clean the station or take out the trash.
If you have a tape/cd bring one with you. Managers and PD's put those in their cars and yes there's a lot of cassette players still in cars. Better to bring it both ways. Be flexible.
You'll find that if you're willing to work your way up the ladder, you'll have lots of opportunities.
Be prepared to drive or move. You're likely going to put some miles on your car. Part time positions can turn into full time positions very quicky in this business.
When you're touring a radio station, be sure and get a feel for the people that work there.
It doesn't hurt to go in without an invitation but making a phone call and asking if you can come tour or bring your resume, with passion in your voice, will help your chances of getting the opportunity to see more than you would on just a "drop by" visit.
Radio people are busy and can be curt, but a phone call a head will help in making that visit go more smoothly.
Also, make sure management gets your resume as well as the PD. Find out who the decision makers are and send them a note after you make your tour. Try to see the decision makers and not just the office help.
After your make the "tour" be sure and send a "thank you" note with your phone number.
You never know when the next door will open. Radio is a business where people change jobs for a dime more an hour, or $10.00 more per week. It's just that way. Radio won't ever be the highest paying job.
Sales pays much better but that's another story.
In looking for new talent, you don't have to be the best voice. But you have to have passion and it sounds like you have some!