The gate is powered, my dad ran electricity out there from somewhere, I think the property next door (that they own as well). It's operated by a garage door opener type transmitter, and there's no intercom. So the family has one and if someone is coming over, they go down to the gate and open it and just leave it open.
Luckyfella: From a quick google search, a point to point bridge is wireless correct? It would have to be mounted way up on a pole above all the trees right? I would like to try to avoid doing that if at all possible.
RVT: Fiber optic is expensive compared to Cat5 correct? I couldn't really find any place selling it.
Sunnykim: If going analog, I would run to a balun then over Cat5 to the house.