My neighbour is always listening to radio verry loud. He listen to FM and I know the frequencie he's tuning in. I just thought "Instead of listening to his radio music, I thought I could just shoot my music on a FM frequencies and have his radio playing it.

I found this
http://www.aaronca...rcuits/fmtrans.htm

But I just want to know what you guys think, if there is two signal on the same frequency, the radio will take the stronger one (The one from the radio station) or the one from my transmitter since I'm closer ?

Thank

Something like that is not going to put out a whole lot of power. I'm guessing it's going to put out in the range of only .5 watts, which probably is not going to be enough power to QRM (out power a station) the guy. You might increase your chances of qrming the guy if you make a fairly reasonable directional antenna tuned for that specific frequency and point it at the guy's radio. I'm guessing that you're best bet for a good antenna is called a quagi. http://commfaculty...overbeck/quagi.htm Keep in mind that you will have to adjust those specs for the specific frequency that you're planning to operate on and the more elements that you can add to the antenna, the better your gain. Also keep in mind that this antenna would be fairly large and may be noticable from other people unless you have it in your house.

I should also mention that to do what you want it to do, this antenna needs to be vertically polarized. So take the antenna in the picture of the hyperlink and turn it on its side.

EDIT: Added polarization info.

Ok thank you kenshin.

Is there a way to out power the station without using a directional antenna, like if I want to out power the station for more than one person (read: pirate radio station) ?

You'll either need to find schematics then for a different type of transmitter or for some type of amplifier circuit. At least in the past, schematics for an amplifier circuit generally are pretty easy to find by googling or something like that. You would need to do a little research as to how to actually hook up the amplifier. I think that if you were to amplify the signal post modulation it might screw up the signal.

Dro a few hundred bucks and buy a 5 watt FM transmitter from veronica in the UK. Just don't blame me when the feds come knocking.