Icom IC-R9500 Instruction Manual - Page 14

1 PANEL DESCRIPTION ■ Front panel (continued) !6 !7 !8 !9 @0 @1 @2 @3 @4 @5 !6 NOISE REDUCTION SWITCH [NR] (p. 5-16) Push to switch the DSP noise reduction ON or OFF. • The [NR] indicator above this switch lights green when the function is activated. !7 NOISE BLANKER SWITCH [NB] (p. 5-15) ➥ Selects from noise blanker 1, 2, or OFF when pushed. The noise blanker reduces pulse-type noise such as that generated by automobile ignition systems. This function cannot be used for FM, WFM, P25 modes or non-pulse-type noise. • The [NB] indicator above this switch lights green and " NB1 " or " NB2 " appears on the display when the function is activated. ➥ Enters blank-width set mode when pushed and held for 1 sec. !8 AUDIO PEAK FILTER/TWIN PEAK FILTER SWITCH [APF/TPF] ➥ Push to turn the audio peak filter ON or OFF during CW mode operation. (p. 4-9) ➥ Push to turn the twin peak filter ON or OFF during FSK mode operation. (p. 4-11) • " APF " appears when audio peak filter is in use. • " TPF " appears when twin peak filter is in use. ➥ During CW mode operation, push and hold for 1 sec. to select the APF passband width from 80, 160 and 320 Hz. (p. 4-9) !9 NOISE REDUCTION LEVEL CONTROL [NR LEVEL] (outer control; p. 5-16) Adjusts the DSP noise reduction level when noise reduction is in use. Set for maximum readability. • To use this control, noise reduction must be ON. Increases Decreases @0 NOISE BLANKER CONTROL [NB LEVEL] (inner control; p. 5-15) Adjust the noise blanker threshold level. • To use this control, either noise blanker must be ON. Deep Shallow @1 RF GAIN CONTROL [RF] (outer control; p. 3-8) Adjusts the RF gain level. While rotating the RF gain control, you may hear noise. This comes from the DSP unit and does not indicate a malfunction. Sensitivity increases Sensitivity decreases 1-4