5-165 RECEIVE FUNCTIONS■ Noise reduction The noise reduction function reduces random noisecomponents and enhances desired signals which areburied in noise. The DSP performs the random noisereduction function.q Push the [NR] to turn the noise reduction ON.• [NR] indicator above this switch lights green.w Rotate the [NR] control to adjust the noise reductionlevel.e Push the [NR] switch to turn the noise reductionOFF.• [NR] indicator lights off.Setting the [NR] control too high can result in audiosignal masking or distortion. Set the [NR] control formaximum readability.■ Notch function This receiver has auto and manual notch functions.The auto notch function uses DSP to automatically at-tenuates up to 3 beat tones, tuning signals, etc., even ifthey are moving. The manual notch can be set to at-tenuate a frequency via the [NOTCH1]/[NOTCH2] con-trols.The auto notch can be used in SSB, AM, FM and WFMmodes.The manual notch can be used in SSB, CW, FSK andAM modes.• Auto notch indication➥ Push [ANF] to turn the auto notch function ON andOFF in FM, WFM, AM and SSB modes.• [ANF] indicator above this switch lights green.• “ ” appears when auto notch is in use.• Manual notch indication➥ Push [NOTCH1] or [NOTCH2] to turn the manualnotch function ON and OFF, manual and OFF inAM, SSB, CW and FSK modes.• [NOTCH1]/[NOTCH2] indicators above these switcheslight green.• Push and hold [NOTCH1] or [NOTCH2] for 1 sec. to se-lect the notch filter width for manual notch from wide,middle and narrow.• Set to attenuate a frequency for manual notch via the[NOTCH1] or [NOTCH2] controls.• “ ” or “ ” appear when manual notch is in use.While tuning the manual notch, noise may be heard.This comes from the DSP unit and does not indicatean equipment malfunction.MN2MN1AN[ANF][NOTCH1] control [NOTCH2] control[NOTCH1] [NOTCH2][NR][NR] control
