AM radios don't take up too much power. In fact they used to home-make crystal sets that took heat off a steam pipe. Many radio stations give away AM radios that only catch their station. So why not make disposable patches you can put on inside your hat or hood, or even the back of your neck that vibrate the signal into your skull so as to not really need much power for volume? Someone could take this to silly extreme and make one that clips into the flossable recesses between your back teeth.
- = - Vasos-Peter John Panagiotopoulos II, Columbia'81+, Bio$trategist BachMozart ReaganQuayle EvrytanoKastorian ---{Nothing herein constitutes advice. Everything fully disclaimed.}---