[sdiy] FM Transmitter IC

[Gordonjcp]

On Mon, Apr 25, 2016 at 07:16:40PM +0100, Rob Spencer wrote:
> Thanks for the info guys. I’m really short of space which is why I’m trying to keep everything as neat as possible. I need to fit everything into roughly the size of an AA battery, including power. 
> 
> It’s for a small wireless controller which needs to send an acoustic signal from a small sensor to a receiver in the same room.
> 

Why not use some of the 433MHz ISM band modules?  You could also just buy a "car stereo adaptor" and gut it.

Bear in mind that if it's for a commercial device that you intend to sell, it will need to be thoroughly tested for a CE mark - no self-certifying radio transmitters :-)

-- 
Gordonjcp MM0YEQ