English: Left alone, the sender produces a continuous 'carrier wave' of radio frequency energy. In order to broadcast an amplitude modulated signal, the high voltage supply to the sender must be boosted or reduced in synchronisation with the audio signal to be sent. This was accomplished using large transformers.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.