Emergency Links: Researchers Identify 'Sweet Spot' for Radios in Tunnels

Researchers at NIST have confirmed that underground tunnels - generally a difficult setting for radios - can have a frequency 'sweet spot' at which signals may travel several times farther than at other frequencies. The finding may point to strategies for enhancing rescue communications in subways and mines.

Read the whole article on Newswise - Scinews

More from Newswise - Scinews