It's hard to describe what I am attempting without talking about the product itself, but I will try. I basically want to make a directional version of the FM transmitters used with mp3 players today, but one that broadcasts on all FM and AM frequencies used on a basic car radio. So I guess 88–108 MHz and 535 kHz - 1705 kHz. It isn't necessary to broadcast both from the same transmitter.
Jim, you are assuming my product is to be used for commercial radio broadcasts, which is not at all the case. This product would be of no use to any business other than the business selling it to the consumer, which would be state and local government. I assure you I have the legalities covered. If I could explain to you the uses of the product, you would understand, but I cannot as I can obviously not trust this entire forum to keep from taking the idea for their own.
You said it is possible to transmit most in a given direction. Can you explain this or link me to somewhere that can?
Thanks for the help so far, anymore input is appreciated.