A CBD is a tuning aid for frequency-shift keyed (FSK) modes and is basically an oscilloscope in X-Y mode. At one time, radioteletype operators used binary FSK to transmit text over radio waves.

16-bit BFSK demodulator with complex or real data samples. Suitable for passband or baseband operation. Ideal for use in low cost / low power RF applications. Small implementation size. Typical symbol ...