Automatic generation of dots and dashes for CW operation✓Правильный ответ
To allow time for switching the antenna from the receiver to the transmitter
Computer interface for PSK and RTTY operation
Объяснение
An electronic keyer generates the dot and dash elements automatically at a set speed with correct timing when the paddle is closed on either side. It is a sending aid, not a transmit-receive switch and not a digital mode interface.