Whilst commonly named antennas, they don't seem to be utilised as radio antennae for acquiring or broadcasting radio waves, but somewhat act as plates of capacitors. The gap from a single antenna decides frequency (pitch), and the gap from the other controls amplitude (volume). Bigger notes are performed by going https://stephentcozi.mybuzzblog.com/18316076/detailed-notes-on-mezzanine-safety-gates-uk