A difference is that they have different speed and how can it go
Single-band routers use a 2.4 GHz and are limited in range and speed compared to dual-band routers, which use both the 2.4 GHz and 5 GHz band. Dual-band routers are more efficient, have longer range, are less prone to interference from household devices, such as microwaves and older cordless phones, and are faster. Read more: http://www.bestdualbandrouter.com
Your local cable companies can provide you with high speed broad band service. Their broad band product offerings come with a variety of different upload and download speeds and have correspondingly different pricing plans as well.
Blackbody radiation is a broad uninterrupted band of radiant energy.
The flagship D-Link and Linksys routers support Wireless-N on the 5.4 Ghz. band, but will cost significantly more.
Unlike ordinary routers that only support one wireless signal band, dual-band routers contain two different types of wireless radios. When first introduced many years ago, dual-band routers supported both 802.11a and 802.11b
A mobile broad band is better than a cable broad band when one needs internet connectivity outside of ones dwelling place. Mobile broad bands are usually a lot slower than cables, but they offer the bonus of being logged on when moving around major cities. Out in the country mobile broad bands may have limited or zero connectivity.
Wireless N routers on the 2.4 Ghz. band can get about 4 MB/sec. transfer speed.
broad band
By connecting to the internet
A wavelength is a small band within a very broad electromagnetic spectrum. It represents the distance between two corresponding points on a wave, such as peak to peak or trough to trough. Different wavelengths are associated with different types of electromagnetic radiation, such as visible light, radio waves, and X-rays.
Broadband essentially here mean the different frequency range or the large wavelength range. Broad band optical limiter is one which exhibits optical limiting behavior over a broad range of wavelength. Typically - in the visible and IR spectral range as we have many optical components or sensors(eye /cameras) responding in this wavelength range.
No Zayn Malik is in the band One Direction