Joe,

Given that you plan to transmit analog television transmission you will
want to operate on the ham bands. The unlicensed stuff will not have
the 1 mile range given the bandwidth and SNR requirements.

I suggest you get a recent copy of the ARRL Handbook. Chapter 9 has a
section on Amateur Television (ATV) and Radio Control. There is an
example of ATV mounted on a model Humvee.

There is a lot of good info on the ARRL site at
http://www.arrl.org/tis/info/atv.html

Google is your friend - a search on "amateur television" gave lots of
sites with interesting equipment that can be purchased or built. There
are groups and forums where you will get lots of practical tips.

Roger