During a convention of Electrotecnicians in 1920, he offered the Termenvoksa or Heterophone, or Theremin, as it was referred to as internationally. These in the convention observed a little box with two antennae, a single on the appropriate and 1 about the remaining. Could it's a different kind of telegraph? https://keegannwnbt.blogaritma.com/36394980/not-known-facts-about-pallet-gate-uk