Hangtime

Greetings from central NC. I have trenched my front yard for water bibs and 110'v ac to several spots. I want lay in some video cable for yet to purchase surveillance system. I need to get my yard closed up but since the trench is dug 24" I have ample room at 6" below grade to go ahead now and lay in video cable. The run is 250' between camera and house. Is RG6 in conduit a good choice. I've installed four in retail store simple 6 camera systems(Revo) but nothing this distance underground or coax type cable. Revo used something like phone/cat5? with push in jacks. Also no nothing about transition from coax to camera or from coax to dvr. Any help appreciated. Thanks Eric

Is gel filled cat5e suitable for direct burial without conduit?

I googled it and it lead me to post here that explains it. I have a lot to learn.

I'm thinking of just a camera with maybe audio(listening). It would be nice if camera would pan The position will be near the street/mailbox driveway entrance. What are baluns? edit how do baluns work in relation to cat5 or coax, thanks