Yaesu FT dx 1200 Operating Manual

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Page 51FT D X 1200 O PERA T ING M ANUALiF noiSe blAnker (nb) operAtionThe FTDX 1200 includes an effective IF Noise Blanker, which can significantly reduce noise caused by automotive igni-tion systems.1. Press the [NB] button briefly to reduce short dura-tion pulse noise such as from switching transients,automobile ignitions and power lines. The “NB ON”will appear in the display to confirm that the Narrow-NB is operating.2. Press the [NB] button again to reduce longer-dura-tion man-made pulse noise. The “NBW ON” willappear in the display to confirm that the Wide-NB isoperating.3. If desired, you may adjust the Noise Blanker levelvia Menu item “034 NB LEVEL” to the point wherethe offending noise is best reduced or eliminated.See box below for details.4. To end Noise Blanker operation, press the [NB] but-ton once more. The “NB OFF” will appear in thedisplay, confirming that the Noise Blanker is no lon-ger in operation.Adjusting the Noise Blanker Level1. Press the [MENU] button to engage the Menumode.2. Rotate the [VFO-B/CLAR] knob (or press the / button) to select Menu item “ 034 NBLEVEL”.3. Press the [SELECT] button4. Rotate the [VFO-B/CLAR] knob (or press the/ button) to the point where the offendingnoise is best reduced or eliminated.5. Press the [SELECT] button, then press the[MENU] button to lock in the new setting andexit to normal operation.interference rejection[NB] Button[MENU] Button[VFO-B/CLAR] Knobkey Function diSplAyIndicates the statusof the Noise Blanker