How do I make my own FM transmitter?

How to make fm transmitter have more power?

• I was wondering how I could make/have a transmitter that transmits on the full band of radio stations with decent power? I'm talking about those little transmitters for cars and such for mp3 players. They only transmit something like 15 feet before they fade out. I want mine to transmit across the house as if it were a regular radio station. Also too, I could tune it on a dead frequency (no station there) and have a little LED readout on my car saying 'tune to this station for my music' or something like that. I'm pretty sure it's because of FCC regulations, but aside from that, how would I acquire/make one that is high power and small and not too expensive?

• Answer:

  You're right about the FCC regulations (Part 15). But you can improve the range of those little transmitters by giving them a decent antenna, cut to the frequency you're using. Also, Ramsey Electronics, and no doubt others, sells FM transmitter kits that are more substantial than the little ones you mention. You don't need too much more power to cover your house.