ORIGINAL: foosball_movie
Crystals? Are we talking about things similar to what Superman used in his ice palace or Napolean Dynamite used in his time machine?
Actually, Yes to the Superman version. But on a much smaller scale of course. think of them as a precision cut rock. Unfortunately it is hard to cut a rock exactly to the proper size and there are other components in the TX circuit that may need to be tuned to match for best performance. zIt is more critical with the TX than the RX because it is radiating a signal that must be controlled.
Don't know who this Napolean Dynamite is supposed to be.