Icom F3400D / F4400D Operation Guide - Page 164
Setting the TX Noise Cancel level, <Key operation>, Portable, Mobile, TX Noise Cancel
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Previous view 12 USER SETTINGS Setting the TX Noise Cancel level You can set the TX Noise Cancel level to between 1 (minimum) and 3 (maximum), or OFF to suppress the microphone input noise to make the audio easy to hear. Higher values suppress the audio noise more, but the audio quality decreases. Portable: For the Ten-key and the Simple key types Mobile: For the LCD types (Menu > Audio Setting > TX Noise Cancel) 1. Push [Menu] to display the Menu screen. 2. Push [Left] or [Right] to select "Audio Setting," then push [OK]. 3. Push [Up] or [Down] to select "TX Noise Cancel," then push [OK]. 4. P ush [Up] or [Down] to set the TX Noise Cancel level. Portable: For the Ten-key and the Simple key types Mobile: For the LCD types Push [TX Noise Cancel] to set the TX Noise Cancel level. LThe setable range is 1 ~ 3, or OFF. LWhen "OFF" is selected, the microphone input noise is not suppressed. Portable: For the Non-display types 1. Turn OFF the transceiver. 2. Set [Selector] to any channel other than Channel 16. 3. While holding down [F1] and [F3], turn ON the transceiver. Continue holding down [F1] and [F3] for about 3 seconds. ••2 beeps sound. ••The transceiver enters the TX Noise Cancel level Set mode. 4. Push [F2] to increase, or push [F3] to decrease the TX Noise Cancel level. LLInformatio ••The setable range is 1 ~ 3, or OFF. ••When "OFF" is selected, the microphone input noise is not suppressed. ••A beep sounds after pushing [F2] or [F3]. An error beep sounds if you try to exceed the setable range. 3 : Push [F2] 2 : Push [F3] 1 OFF 5. Turn OFF the transceiver, then turn it ON again to exit the TX Noise Cansel level Set mode. [Selector] [VOL] LThe setable range is 1 ~ 3, or OFF. [F1] LWhen "OFF" is selected, the microphone input noise is not suppressed. 5. Hold down [Back] for 1 second to return to the standby screen. [F2] [F3] 12-12