Communications system comprising channelized receiver

A communications system comprising a channelized receiver is provided. In some embodiments, the system extends the capabilities of the channelized receiver, enabling the system to perform electronic surveillance monitoring (ESM) or relay functions. As such, the system may be employed to receive, process and provide information to downstream devices. In some embodiments, the system provides wideband communications capability. The system may also include a programmable demodulator for extracting communications data from incoming signals.