5-155RECEIVE FUNCTIONS■ Noise blanker The noise blanker eliminates pulse-type noise such asthe noise from car ignitions. The noise blanker is notavailable for FM/WFM or P25 mode.q Push [NB] several times to select the noise blankerfunction, NB1 or NB2, and OFF.• [NB] indicator above this switch lights green.• “NB1” or “NB2” appears on the display when either isON.w Rotate [NB] control to adjust the noise blankerthreshold level.When using the noise blanker, received signals maybe distorted if they are excessively strong or thenoise type is other than pulsing. Turn the noiseblanker OFF, or rotate [NB] control to a shallow po-sition in this case.DD NB set modeTo deal with various type of noises, attenuation leveland noise width can be set in NB set mode. Two ofnoise blanker, NB1 and NB2, can be set indepen-dently.q Turn ON the desired noise blanker, NB1 or NB2.• When entering NB1 set mode, this step can be skipped.w Push and hold [NB] for 1 sec. to enter NB1 (or NB2)set mode.e Push [F-1•Y] or [F-2•Z] to select the desired item.r Rotate the main dial to set the desired level or value.• Push and hold [F-4•DEF] for 1 sec. to select a defaultvalue.t Push [EXIT/SET] to exit NB1 (or NB2) set mode.[NB][NB] controlSet the noise attenuation level from 1 to 10.NB1 Depth 8Set the noise pulse width from 1 to 100.NB1 Width 40%• NB1 set modeSet the noise attenuation level from 1 to 10.NB2 Depth 8Set the noise pulse width from 1 to 100.NB2 Width 80%• NB2 set mode
