Icom ic-U80 Instruction Manual

Also see for IC-U80: Instruction manual Quick guide

18■ Key lock functionTo prevent accidental frequency changes, or unnecessaryfunction access, use the Key Lock function.Push [FUNC](M), and then hold down [ ](# ENT) for 1 sec-ond to turn the Key Lock function ON or OFF.• “ ” appears while the Key Lock function is activated.• [ ], [VOL], [MONI], [PTT] and [FUNC](M) + [ ](# ENT) are stilloperable while the Key Lock function is ON.■ ReceivingMake sure the BP-264 or BP-265 battery pack is fullycharged, or the BP-263 battery case has brand new alkalinebatteries (pp. 11–14).q Hold down [ ] for 1 second to turn ON the power.w Rotate [VOL] to set the desired volume level. (p. 15)• The volume level is displayed on the LCD while adjusting.e Set the receive frequency. (p. 17)r Set the squelch level. (p. 15)• While holding down [MONI], push [p] or [q].• The squelch level is displayed on the LCD while setting.• “SqL 1” is loose squelch (for weak signals) and “SqL10” is tightsquelch (for strong signals). “SqL 0” is open squelch.• Hold down [MONI] to open the squelch manually.t When a signal is received:• The squelch is opened and the audio is heard.• The signal icons show the relative signal strength level.Appears4 BASIC OPERATIONw Adjust the volume level.r For the squelch level setting.(Push to monitor)q Turn ON the power.e Set the frequency.r Adjust the squelch level.