72 PANEL DESCRIPTION■ Programmable function keysThe following functions can be assigned to [P0], [P1], [P2], [P3],[Red], [ ] and [ ] programmable function keys.Consult your Icom dealer or system operator for details concern-ing your transceivers programming.If the programmable function names are bracketed in the followingexplanations, the specific key is used to activate the function de-pending on the programming.CH UP AND DOWN KEYS➥ Push to select an operating channel.➥ Push to select a transmit code channel after pushing [TX CodeCH Select].➥ Push to select a DTMF channel after pushing [DTMF Autodial].➥ Push to select a scan group after pushing and holding [Scan AStart/Stop]/[Scan B Start/Stop].ZONE SELECT KEYPush this key, then select the desired zone using [CH Up]/[CHDown].What is a “zone”?—The desired channels are assigned into azone according to the intended use for grouping. For example,‘Staff A’ and ‘Staff B’ are assigned into a “Business” zone, and‘John’ and ‘Cindy’ are assigned into a “Private” zone.SCAN A START/STOP KEY➥ This key’s operation depends on the Power ON Scan setting.When the power ON scan function is turned OFF;Push to start and cancel scanning operation.When the power ON scan function is turned ON;Push to pause scanning, then resume scanning after a specifictime period has passed.➥ Push and hold this key for 1 sec. to indicate the scan group, thenselect the desired scan group using [CH Up]/[CH Down].