Charter cable customers in South Shore may need to get new hardware by Nov. 12 as the company does away with analog channels and goes all digital in the area.

Citing competitive reasons, Charter officials won’t release the number of locals affected by the change, spokesman Jack Hardy said. But customers without a digital cable box will no longer be able to watch TV after Nov. 12.

“The important thing for customers to know is Nov. 12 is the transition date,” he said, “and they need to have a converter box for every TV they have.”

Digital boxes can be rented from the Charter store in Zephyr Cove for $5.99 per month. But for customers who already have the hardware, no new fees will be added, Hardy said.

Charter, which has been offering both analog and digital TV, is making the switch to an all-digital format because it allows for a significant increase in bandwidth, he said. Subsequently, the company will be adding more than 130 high-definition channels to its lineup.

Customers without HD TVs will still be able to watch cable in standard definition, as long as they have a digital converter.

Charter estimates that at least 90 percent of its customers have at least one digital device in their house already, “which means the time for the transition is now,” Hardy said.

North Shore underwent the transition last month.

South Shore customers have been notified of the change for more than a month, Hardy said. But the company is still focusing on spreading the word.

For questions or concerns, customers can call 1-888-438-2427.