If you have lost the coaxial cable in the wall or attic then you can take help of a coaxial toner probe to trace down the cable.
Tracing coax cables lost in a wall.
But your job is to activate the one cable.
This model allows you to connect the device to a variety of cables including rj 11 rj 45 and coaxial.
A coaxial cable mapper can be used to trace and assess coaxial cables placed at multiple locations.
It also has alligator clips which allow you to connect it to electrical and other wires.
Say you have an apartment complex with all the coax or phone wires led to a central wiring closet and the install guy didn t label anything.
This video shows how to trace coax with just a multimeter and a piece of aluminum foil.
Most homes and apartment buildings have these cables and connections already installed in the walls much like electrical outlets are already installed.