I have a late 70s/early 80s JCPenney dehumidifier, which I rarely ever use.
My basement is mostly underground, with 2 walls having glass block Windows that are 24" high. The basement is unfinished and bring an older home the foundation is terra cotta block. About 12 years ago grandma has external French drains installed and the exterior of the foundation waterproofed and sealed, while expensive it has worked great. When I bought the home the appraiser commented on how dry my basement was and that it didn't smell damp or musty.
The only time there is dampness in my basement is when we get a heavy rain because some water will run down the outside steps and under my basement door