Icom IC-7700 Instruction Manual - Page 105
Noise reduction, Dial lock function
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■ Noise reduction NR [NR] control ■ Dial lock function [LOCK] indicator LOCK 5 FUNCTIONS FOR RECEIVE The noise reduction function reduces random noise components and enhances desired signals which are buried in noise. The DSP performs the random noise reduction function. q Push NR to turn the noise reduction ON. • [NR] indicator above this switch lights green. w Rotate the [NR] control to adjust the noise reduction level. e Push NR to turn the noise reduction OFF. • [NR] indicator lights off. Large rotations of the [NR] control results in audio signal masking or distortion. Set the [NR] control for maximum readability. The dial lock function prevents frequency changes by accidental movement of the tuning dial. The lock function electronically locks the dial. ➥ Push [LOCK] to toggle the dial lock function ON and OFF. • The [LOCK] indicator lights when the dial lock function is in use. 5-17