wireless telegraphy   (TTS Sound)

The wireless_telegraphy has 2 Senses.

• radiotelegraph, wireless telegraphy, radiotelegraphy
• 無線電信
• telegraphy that uses transmission by radio rather than by wire
• 電線ではなく無線によって伝達する電信

• radiotelegraph, wireless telegraphy, wireless telegraph, radiotelegraphy
• 無線電信
• the use of radio to send telegraphic messages (usually by Morse code)
• （普通モールス信号で）電信のメッセージを送るための無線の利用