What Does White Space Device (WSD) Mean?

A white space device (WSD) is a broadband device used to detect unused TV spectrum channels that do not have exclusive broadcast license requirements, such as ultra high frequency (UHF) (300–3000 MHz) and very high frequency (VHF) (30-300 MHz). In November 2008, the Federal Communications Commission (FCC) formally approved and certified WSD use of these types of channels.

Techopedia Explains White Space Device (WSD)

The FCC’s WSD approval in 2008 was the first step toward facilitating the use of unlicensed channels in more than 20 years. The two WSD categories formally certified by the FCC are as follows: