Question

explain the meaning of radio

Answer 1

hey mate here is your answer...

PURPOSE. To define the communications protocol, that is the correct procedure, etiquette and precedence applied to safeworking communications either via telephone or train radio.

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Answer 2

Hey dude

the transmission and reception of electromagnetic waves of radio frequency, especially those carrying sound messages.
"cellular phones are linked by radio rather than wires"
2.
the activity or industry of broadcasting sound programmes to the public.
"she has written much material for radio"
verb
1.
communicate or send a message by radio.
"we radioed for help"

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