Radio LinksThe physical layer transmits signals in form of radio waves.
The radio
Radio waves are important in communication and technology because they can travel long distances and penetrate obstacles like buildings and mountains. This allows for wireless communication, such as radio broadcasts, cell phone calls, and Wi-Fi connections, to be transmitted efficiently and effectively.
Wireless technology
RF- Radio Frequency, which is in the measure of kilo & mega Hz range
Technology that involves waves is associated with radio and television.
A radio is what is sounds like - an FM/AM radio. Technology is basically invention, so the radio is technological.
Radio
Radio
Any form of technology can be used or abuse depending on who is accessing the technology. The there is the small but important point of personal opinion as what is a 'good' use of technology and what is a 'bad' use of technology
It is important because the first two things to go down in an actual catastrophic disaster is the internet, cell phones, and satellite technology. Radio and telegraph are the most reliable forms of technology that will hold up in these circumstances.
The web address of the Museum Of Radio And Technology is: http://oak.cats.ohiou.edu/~postr/mrt