A quick google turns up a frequency of ~433 MHz for these remotes. If right, that gives a wavelength of ~0.7 meters, which would make the skull a 1/2 to 1/4 wave resonant cavity.
A quick google turns up a frequency of ~433 MHz for these remotes. If right, that gives a wavelength of ~0.7 meters, which would make the skull a 1/2 to 1/4 wave resonant cavity.