Dear Steven:
in our civilized world it is not legally allowed to simply operate a transmitter as its signal could cause interference to authorized frequency users. I would like to invite you to contact your local radio-amateur club or a licensed radio amateur who can help you with your project. Most you can learn by reading the ARRL Radio Amateurs' Handbook where you can also find examples of good transmitters, receivers and antennas suitable for your work.
If you cause an interference to authorized frequency users, you can be found by authorities and fined. Try to go a honest way!