Yaesu CT-39A Operating Manual

26 FT-8800R Operating ManualADVANCED O PERATIONAUDIO MUTINGThe Audio Mute feature is useful in situation where it would be helpful to reduce the audiolevel of the “Receive Only” band whenever you receive a signal on the “Main” band or youtransmit on the “Main” band during Dual Receive operation.To activate the Audio Mute feature:1. Press the [SET] key momentarily to enter the Set mode.2. Rotate the “Main” band DIAL knob to select Menu #24 (MUTE).3. Press the “Main” band DIAL knob momentarily, then rotate the “Main” band DIAL knobto choose the desired selection.TX: Reduces the audio level of the “Receive Only” band whenever you transmit onthe “Main” bandRX: Reduces the audio level of the “Receive Only” band whenever you receive asignal on the “Main” band.TX/RX: Reduces the audio level of the “Receive Only” band whenever you receive asignal on the “Main” band or you transmit on the “Main” bandOFF: Disables the Audio Mute feature4. Press and hold in the “Main” band DIAL knob for 1/2 second to save the new setting andexit to normal operation.RF S QUELCHA special “RF Squelch” feature is provided on this radio. This feature allows you to set thesquelch so that only signals exceeding a certain S-meter level will open the squelch.When setting up the RF Squelch circuit for operation, note that you may set the RF Squelchindependently for the “left” and “right” sides, using the following procedure:1. Press the [SET] key momentarily to enter the Set mode.2. Rotate the “Main” band DIAL knob to select Menu #32 (RF SQL).3. Press the “Main” band DIAL knob momentarily, then rotate the “Main” band DIAL knobto select the desired signal strength level for the squelch threshold (OFF, S-2, S-5, S-9, orS-FULL).4. Press and hold in the “Main” band DIAL knob for 1/2 second to save the new setting andexit to normal operation.5. Finally, rotate the SQL knob fully clockwise.