Suppose a Charlotte small business owner woke up one morning and found a 100-year-old machine in the basement of her store. She soon discovered that every time a dime was put into the machine, one dollar came out.  Imagine, now, how profitable that business would become.

Good news: such a contraption exists,  and every business owner probably has one in their car, in their store, in their home, even on their phone. It's called Charlotte radio.

Over the past few years, Nielsen has conducted more than 20 studies to determine what type of return-on-investment (ROI) a business owner  can expect from radio advertising.  Although the results varied by industry, the average company generated $100 in sales for every $10 invested. Turning dimes into dollars.

"At least 40% of our new customers come because of our advertising on Charlotte radio," says Deb Filkins, co-owner of Cougar Run Winery in Concord, NC. "Eighty percent of these first-time customers will become repeat customers."

Ms. Filkins and her husband Tom, who produces all the wine, opened Cougar Run in December 2012 with an inventory of 1500 bottles. The retail store is located in a historic Coca-Cola bottling plant on the city's Church Street

"During our first full month in business, we rang up $100 in sales. Tom and I were ecstatic," says Ms. Filkins.

The winery began to grow modestly drawing customers primarily from the Concord area.