BIDDEFORD — You can buy a television from a big box store where you’re just another customer, or you can buy a television from Grady’s Radio and Satellite TV, where you can get personal service from someone with nearly 40 years in the business.

Grady Sexton opened the business in 1976, moving to its current downtown location at 5 Alfred St. in 1998.

His son Bill started working at the store more than 25 years ago as a teenager, and installs the televisions.

“It’s definitely a family business,” said Grady Sexton.

Sexton said he doesn’t charge for delivery.

“Our niche is we insist you let us deliver it, set it up, plug the wires in, and show you how to use it,” said Sexton.

He said he and his son really enjoy helping customers, and many have become friends who come back or refer others.

“The big thing is, we service everything we sell,” said Sexton. “People buy something at the big box stores, then we get calls.”

In addition to televisions and home theater systems, Grady’s sells television antennas, CB radios, surveillance systems and police scanners, as well as Direct TV and DISH network service. Grady’s doesn’t only cater to residential customers, but has also installed televisions at local businesses and schools.

Grady’s offers the whole range of sizes of television sets, and the largest one the store has sold was 105 inches, for a home theater system, said Sexton.

Over the years, Sexton said he has seen many trends in the business. For one, CB radios aren’t as popular as they were when he first went into business, although there is still interest in the communication system, especially from trucking companies.

One of the biggest changes in home televisions is the size. Many customers who were at one time satisfied with 32- or 40-inch television set now have a 55-inch set.