About 15 years ago I ran the video install for the CNN studios in Rockefeller Center for Connie Chung and Paula Zahn.
We did the whole 9 yards - Electrical, Telephone, Data, Audio, Video.
Every desk got a telephone jack (Cat 5E), a data jac (Cat 6A) and a Video jack (RG-6).
We ran RG-6 to every desk, but the feeders to the Video amps were RG-11.
There was no problem working with the RG-11. A little stiffer. A different connector.
It all worked well and came out beautifully.
When I did Microwave we used RG-8. That was different. Much bigger. But still Coax.
Sam