The ICOM UT-106 Digital Signal Processing (DSP) module is a powerful device for the 718 transceiver. This plug-in board provides:
ANF Automatic Notch Filter -- This automatically minimizes beat signals and heterodynes while preserving the receive signal. Also, the notch frequency is automatically adjusted to follow interfering beat signals; for example, reducing interference from RTTY signals during SSB operation. Works in SSB, FM and AM modes.
NR Noise Reduction -- reduces noise components and picks out desired signals which are buried in noise. The received AF signals are converted to digital signals and then the desired signals are separated from the noise. Works in all modes.
Both ANF and NR features are accessed through the transceiver's display menu. The ANF function can be turned on or off via the menu. For NR, set the desired noise reduction level.