IC24AT.6 LIGHT + 7 = Power Save deactivated (use this for packet operation) LIGHT + 8 = Power Save (minimum - 0.125 / 0.5 second) LIGHT + 9 = Power Save (maximum - 0.125 / 2.0 seconds) LIGHT + A = ???? Unknown action LIGHT + B = ???? Unknown action LIGHT + C = ???? Unknown action LIGHT + D = ???? Unknown action LIGHT + # = ???? Unknown action LIGHT + B + # = RX Extended Range enable This requires that diode D13 is removed (left diode on CPU board). Note that this diode has already been removed by ICOM at the factory on many units. Be sure to hold these keys down until the activity display stops and is showing a receive frequency. FUNC + A = Reset the CPU (this will clear all the memory channels to the factory defaults)