44BUTTON ASSIGNMENTThe Side and Menu buttons can be programmed with the functions listed below.Functions LISTFunction name Display Press HoldNone None NoneButton Lock NonePress to lock/unlockthe transceiverbuttons. Refer to{p.36}.Calling Alert Calling Alert NoneChannel Down Decreases the Channel number insteps of 1.Hold down this buttonto continuouslydecrease theChannel number.Channel Menu Enter the Channel setup menu.Refer to {p.15}.Press to lock/unlockthe transceiverbuttons. Refer to{p.36}.Channel Up Increases the Channel number insteps of 1.Hold down this buttonto continuouslyincrease the Channelnumber.CW MessagePress to transmit the preset Morsecode message on your currentchannel.( It can not operate in the initialstate.)NoneFixed VolumeSwitches various Tone levels of thetransceiver among the settings forHigh, Low or Off.( It can not operate in the initialstate.)NoneHome ChannelPress this button to immediatelyselect your Home Channel. Referto {p.46}.Hold down thisbutton to set thecurrent channel asthe Home Channel.Refer to {p.46}.ID List To transmit your ID list, to requesta call. Refer to {p.25} or {p.29}. None