I used to be a dish dealer, and assume you need the coax run for a
satellite install. in any case it really doesnt matter.

DONT DIRECT BURY THE CABLE! If it ever fails you have all that digging
again

Dig a really shallow trench like 6 inches deep, that makes the jb
instantly easier

Then run roll of plastic pipe in ditch, then pull coax thru pipe /
conduit.

use a oversize conduit, things change and one day you might need
another cable in there

backfill the hole. since its conduit the line can be shallow and
wouldnt get damaged accidently

This is how we handled all installs requiring digging.