Spectrum is the radio frequency used to power mobile phones, televisions and broadband internet access.
It is the digital equivalent of an AM/FM radio or a TV antenna.
In the digital age, it is the only place to receive digital signals and to access digital content, including the internet.
Spectrum also carries digital audio signals and can transmit digital TV signals.
In the Digital World, it’s a key part of the spectrum used by broadband providers and telecoms to send data.
The Australian Competition and Consumer Commission is set to launch an inquiry into the spectrum auction to see whether there has been a lack of competition in the radio spectrum.