The Classifier Code Check is a versatile analysis tool for the classification of unknown signals and the determination of the protocol (mode) in use. The CCC combines a classifier with a table-based mode check and an advanced code check.

There are two kinds of CCCs in W-SPECTRA. The HF CCC will attempt to process all signals within a bandwidth of up to 4.8 kHz depending on settings and will primarily address the requirements for the analysis of signals below 30 MHz. The VHF/UHF CCC will attempt to process all signals within a bandwidth of up to 96 kHz depending on settings and will primarily address the requirements for the analysis of signals from 30 MHz to 3 GHz. Both CCC will of course work with signals in other frequency ranges if they fall within the bandwidth, and fulfil the other criteria, used by the CCC processes.