英和和英

a wireless security system

radio

the regulations concerning communications circuits

wireless telephony

a wireless radio that uses a transceiver called a citizens' band radio

the line used for telephone communications

establish radio communications with

radio communication service which can be used only with registration

a radio receiver

an aerial ropeway

wireless communication by an amateur

a radiator

an antenna

an aerial

a wireless receiver

indirect telephone connection

a telegraphic communications circuit

Cable connection

the operation of a communication network

the configuration of a communication network

telephonic connection

the ways of communication that does not use telephone lines

a radio transmitting facility

communication conducted over wires

Wireless communication is inaugurated （between A and B）.

a broadcast by radio

a wireless equipment

cordless telephone

a wireless telegram

send a message by radio