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Radio

The radio (not choked) is the method that does not use the line.
It is added like a prefix by a modified word and constitutes a compound word, but the "radio telecommunications" (or, wireless communication) is abbreviated in particular frequently and is merely called "radio" soon.

I distinguish it simply because cabled both type is used together with radio, and what I adorn with radio expressly when there is only the method how does not need the line is rare.
For example, in other words it is a sound / a beacon / a lighthouse of meeting conversation / a bell and the cannon to be concrete, but does not use the transmission line when I transmit a sound and light by a method except telecommunications (without converting it into an electrical signal, just) when a remote partner can stream down information by these means.
However, there is not usually what I call with "radio (or wireless communication" transmits "a radio sound") because only an extremely limited thing (but speaking tube and thread telephone - this just convert a sound into vibration and communicate, -) has the cabled method that you should compare, and need to distinguish does not occur.

There is it once in the time written in the Japanese dictionary like "a thing of the communication that used an electric wave with the radio" because the means that put the wireless communication of the electrical signal to practical use was only electric wave (radio).
However, if in late years cabled optical communication was put to practical use by the spread of optical fiber, I took you, and "the light wireless communication" to be opposed came to be known to everybody.