41PANEL DESCRIPTION Programmable function keysThe following functions can be assigned to [P0], [P1], [P2],[P3], [P4], [YY], [ZZ], [ ] and [ ] programmable functionkeys.Consult your Icom Dealer or System operator for details con-cerning your transceivers programming.In the following explanations, programmable function namesare bracketed, the specific switch used to activate the func-tion depends on programming.[CH UP], [CH DN]CH UP AND DOWN KEYS• Select an operating channel.• Select a transmit code channel after pushing the [TXCODE CH] key.• Select a DTMF channel after pushing the [DTMF] key.• Select a scan group while pushing and holding the[Scan A/B] key.[BANK] BANK KEYSelect and determine a bank number.• When the optional UT-105 is installed, push [BANK] thenpush [CH UP]/[CH DN] to select operating bank number,and then push [BANK] to determine the bank number.[PRIO A], [PRIO A (Rewrite)], [PRIO B]PRIORITY CHANNEL KEYS➥ Select Priority A or Priority B channel with each push.➥ Push and hold [Prio A (Rewrite)] to program the pri-ority channel.[MR-CH1], [MR-CH2], [MR-CH3], [MR-CH4]OPERATING CHANNEL KEYSSelect an operating channel directly.[SCAN A], [SCAN B]SCAN START/STOP KEYS➥ Push this key to start scanning; and push again tostop.NOTE: Place the microphone on hook to startscanning.Take the microphone off hook to stop scanning.➥ Push and hold this key to indicate the scan group,then push to select the desired group.[SCAN Add/Del(Tag)]SCAN TAG KEYAdds or deletes the selected channel to the scangroup.[High/Low]OUTPUT POWER SELECTION KEYSSelect the transmit output power temporarily or perma-nently depending on the pre-setting.• Ask your Dealer or System Operator for the output powerlevel for each selection.[TA] TALK AROUND KEYTurns the talk around function ON and OFF.• The talk around function equalises the transmit frequencyto the receive frequency for mobile-to-mobile communi-cation.