Instead, a form of frequency shift keying was employed.
2.
The tone is modulated using frequency shift keying.
3.
A frequency shift keying ( FSK ) signal is alternating between two waveforms, and allows passband transmission.
4.
It used Frequency Shift Keying ( FSK ) to send data, shifting between 20 kHz and 26 kHz.
5.
The control channels use signalling at 1, 200 bits per second with fast frequency shift keying ( FFSK ) subcarrier modulation.
6.
These audio tones, then, SSB transmitter to produce the final audio-frequency shift keying ( AFSK ) radio frequency signal.
7.
The voice was keyed to two 16-inch vinyl phonograph records that contained a Frequency Shift Keying ( FSK ) audio tone.
8.
�lectricit?de France ( EDF ) developed a system called " spread frequency shift keying " or S-FSK . See IEC 61334.
9.
They transmit binary digital data by modulation methods such as frequency shift keying ( FSK ) allowing portable digital devices to communicate via wireless networks.
10.
Gaussian Frequency Shift Keying ( GFSK ) modulation is used : the binary one is coded with a frequency increase by 288 kHz, and the binary zero with frequency decrease of 288 kHz.
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