Here are my opinions on some of those questions:
Originally Posted by enzo9
- STP or UTP?
Unshielded. For ethernet, STP is only necessary in really
noisy environments, like radar installations. Shielded is a pain in the neck to terminate.
- What's the difference between Solid & Stranded? Which should I get?
With solid-core, each wire is a single strand of copper, whereas with stranded-core, each wire is made up of a bunch (probably seven) smaller strands of copper.
Solid is easier to terminate, but less flexible. Solid is typically used for fixed-runs, like through attics and inside walls, while stranded is typically used for patch-cords, like from the wall to the camera. I think that you should just get solid for your infrastructure, and then buy pre-made patchcords.
- Do I need special wire for outdoor use (outdoor meaning covered porch... Just cold)?
I just use standard cat5e outdoors, even across roofs. The UV from direct sunlight can eventually breakdown the outer insulation, if the cable is not designed for sunlight. All cat5e that I have bought has been UV tolerant, so I think that is pretty standard.
By the way: I really like Olyteddy's balun idea.