Most commonly used modulation system for telegraphy is ________
Most commonly used modulation system for telegraphy is ________ Correct Answer FSK
FSK (Frequency Shift Keying) is a method to transmit digital signals, which are in form of binary data. In telegraphy, a modem is used to convert binary data to FSK and vice-versa, for communication between computers, over telephone lines. Single tone modulations deals with message signal having single frequency component, whereas, Multi-tone modulation deals with message signal having multiple frequency components.