I ve never run much coax but if are a 3 4 in hole might be a better.
Cable drop through attic multistories.
Use a piece of string that you can add a small weight to such as a steel nut or whatever you can find.
Then retract the fish tape to pull the cable through.
3 8 is really only useful for a single cable run and i can t imagine running cable through a 1 4 hole.
Make sure the tape is smooth so the cable can slide through the opening.
How to install an attic fan video.
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.
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.
Carefully extend the fish tape from one opening to the other.
Yes this should be corrected and it would be good to have the wiring and all the circuit connections inspected as well.
If you will need to fish wiring through a wall drill a hole through the wood plate in the attic only.
Pull the cable through with a fish tape.
Drop the string and catch it in the wall cutout and use that to pull the cable through.