Use a piece of string that you can add a small weight to such as a steel nut or whatever you can find.
Cable drop through attic multistories.
I ve never run much coax but if are a 3 4 in hole might be a better.
Make sure the tape is smooth so the cable can slide through the opening.
Carefully extend the fish tape from one opening to the other.
When cutting through drywall from the interior of a room use a utility knife and cut carefully you don t want to drill through a hidden wire or the paper.
If you will need to fish wiring through a wall drill a hole through the wood plate in the attic only.
Tape the end of the fish tape tightly onto the cable with electrical tape.
This video shows how to install an attic fan to help keep your home cooler.
Then retract the fish tape to pull the cable through.
Pull the cable through with a fish tape.
If drilling downward through the floor repeat the above procedure but expect to pass through 3 4 inch 1 9 cm sub floor and up to an additional 3 4 inch 1 9 cm of finish floor hardwood etc once 2 inches 5 1 cm have been penetrated it should be much easier to drill.
And use semi rigid wiring fish tape to pull your wiring down to your outlet location.
The attic wiring should be protected and secured to ceiling joists or other wood structural supports.
Drop the string and catch it in the wall cutout and use that to pull the cable through.