By 2013 the digital signal will be available in the whole country.

In May 2009, it went full power on its digital signal.

However, by spring 2012, the station's digital signal had gone off the air.

It will soon also be the first to air a mobile digital signal.

It would be over a year before they were broadcasting in full power on their digital signal.

You're thinking in analog terms for a digital signal here.

High level of a digital signal, also known as "logical 1"

That technology is based on analog rather than digital signals.

A digital signal can also be manipulated in hundreds of ways.

It is sometimes used to eliminate noise from a digital signal.