As part of Spectrum’s nationwide conversion to an all-digital network, Keene customers have a deadline next week to switch to the proper equipment.

Scheduled for Tuesday, the local upgrade will affect customers in Keene, Marlborough, Richmond, Roxbury, Surry and Swanzey, as well as those in Athol and Orange, Mass.

Charter Communications Inc., which owns the Spectrum brand, has already rolled out the digital format in most of the 41 states in which it operates, according to a news release. The company plans to complete the process in all service areas by next year.

Andrew D. Russell, Charter’s director of communications for the Northeast, said that communities are scheduled for the update on a weekly basis. The Keene and Athol areas will make the transition this week, he wrote in an email, and the company will continue the process for other service areas in New Hampshire and Maine throughout the next couple months.

In switching from analog signals to digital, customers must have a digital receiver connected to each TV.

“Most customers have already adopted digital equipment for at least one TV in their home, so for most this is about connecting a secondary TV,” Russell wrote.

Russell wrote that the all-digital conversion will result in better picture quality and access to On Demand programming. It will also free up network capacity to deliver faster Internet speeds, he said.

Depending on their programming packages, customers may be eligible for a receiver at no charge. Additional receivers cost between $7 and $12 per month., Russell wrote.

Spectrum customers can get digital receivers online with free shipping by visiting spectrum.com/DigitalNow or calling 1-844-278-3408.

Customers can also pick up equipment at the Spectrum store at 11 Eagle Court in Keene. The shop will have extended hours next week to help customers with the transition.

Sierra Hubbard can be reached at 355-8546 or at shubbard@keenesentinel.com. Follow her on Twitter @SierraHubbardKS.