If your like me you've found that radio frequency (RF) is about the coolest and hardest way to send data wirelessly!  I started researching how RF worked and the difference between AM and FM and which worked best for what applications.  I built some of my own 'FM bugs' and even got some to work pretty well....until I soldered them down on PCB and then suddenly they were untunable to the range I was working in.  I tried using old baby monitors but the range was limited to about 10 meters but the bandwidth wasn't high enough to send video feeds.  So after much searching I found the true nugget o' gold web site.  They carried RF transmitters and receiver pairs, encoder and decoder pairs and in high enough frequency to transmit almost anything, and here's the kicker....they're dirt cheap!!  Only $13 for a TX/RX package.  The web site is www.rentron.com   Each Transmitter and Receiver is about the size of a postage stamp.  So go check it out already!