I read somewhere in the depths of the webs that a DAC can be used to clean up a noisy radio signal.. So - if this is the case, I am wondering if it's possible to somehow mod pHATDAC to filter the 'horrendously offensive and noisy' digital output signal from pifm on (pin 7) and pipe out something a bit more friendly to other users of the airwaves.
PS - My lack of practical experience of modding electronics is surpassed only by my lack of theoretical experience. So try to keep any thoughts monkey-proof - looking forward to hearing anybody's thoughts on the matter
Edit: The more I think about this the more I realise that it's probably not possible without a whole shedload of hacks.