But then you are transmitting at 0,5 bit / second? The ideal range/speed is somewhere between 100 and 1000MHz, ideally you would want that entire range. But h

But then you are transmitting at 0,5 bit / second? The ideal range/speed is somewhere between 100 and 1000MHz, ideally you would want that entire range. But how do you build a band pass filter that can cover the entire range?!