In depth Usage

It will work from about 1Mhz up to 250Mhz, although the useful FM band is 88 Mhz to 108 Mhz in most countries.
Run the ./pifm binary with no command line arguments to find usage.
The second command line argument is the frequency to transmit on, as a number in Mhz. Eg. This will transmit on 100.0

It will work from about 1Mhz up to 250Mhz, although the useful FM band is 88 Mhz to 108 Mhz in most countries.