decibel carrier (dBc)

Decibel Carrier (dBc) corresponds to the transmit level of an instantaneous carrier signal. The signal strength of the modulated signal results from the tenfold logarithm of the power of the unmodulated transmit signal in relation to the power of the modulation signal. For positive dBc values, the instantaneous signal strength of the modulated signal is greater than that of the pure carrier signal; for negative dBc values, it is less.