OPERATION
POWER ON/OFF
1. | Press and hold select/ | key to turn the radio on. |
2. | A channel number will appear on the display. | |
Press and hold select/ | key to turn the radio off. | |
VOLUME
1.Press 
or
key to increase or decrease the volume level. ‘VOL’ icon appears on the display while volume is being adjusted.
There are 8 volume levels. Level 0 (No Audio) to Level 7 (Maximum Volume).
ADJUSTING THE KEY BEEPS
txp
Your radio emits a beep each time one of the keys (except for the PTT key) is pressed.
1. To turn OFF this beep: Press and hold 
/call key while turning on the radio.
2. To turn ON this beep: Press and hold 
/call key while turning on the radio.
ROGER BEEP
Roger Beep is a BEEP that is sent to notify the end of transmission (both PTT and VOX transmission.) Roger Beep can be heard through the speaker when Key Beep is on. Roger Beep is transmitted even if Key Beep is turned off.
However, Roger Beep will not be heard from the speaker.
1. To turn OFF Roger Beep: Press and hold 
key while turning on the radio.
2. To turn ON Roger Beep: Press and hold 
key while turning on the radio.
KEYLOCK ON/OFF
1.Press 
/call key for 1.5 seconds to enter keylock on mode.
2.Press /call key for 1.5 seconds while in Keylock mode to exit the Keylock mode.
While in Keylock on mode, the uh064sx can still receive and transmit.
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