viOPERATING THROUGH REPEATERS ............................................................ 31SELECTING AN OFFSET DIRECTION (SHIFT) .......................................... 31SELECTING AN OFFSET FREQUENCY ..................................................... 32TONE FUNCTION ........................................................................................ 32AUTOMATIC REPEATER OFFSET ............................................................. 34REVERSE FUNCTION ................................................................................. 34TRANSMITTING A 1750 Hz TONE .............................................................. 35SIGNALING........................................................................................................ 36CTCSS .......................................................................................................... 36DCS .............................................................................................................. 37CROSS TONE .............................................................................................. 39DTMF FUNCTIONS............................................................................................ 40MANUAL DIALING ....................................................................................... 40AUTOMATIC DIALER ................................................................................... 40ADJUSTING THE DTMF CODE TRANSMIT SPEED .................................. 41DTMF TX HOLD ........................................................................................... 42ADJUSTING THE PAUSE DURATION ........................................................ 42DTMF LOCK ................................................................................................. 42AUXILIARY FUNCTIONS .................................................................................. 43PROGRAMMABLE VFO ............................................................................... 43FREQUENCY STEP SIZE ............................................................................ 44TONE ALERT ............................................................................................... 44POWER ON MESSAGE ............................................................................... 45BEEP FUNCTION ......................................................................................... 46LOCK TYPE .................................................................................................. 46BATTERY SAVER ........................................................................................ 47APO (AUTO POWER OFF) .......................................................................... 48NARROW BAND FM OPERATION .............................................................. 48BEAT SHIFT ................................................................................................. 49VOX (VOICE-OPERATED TRANSMIT) ....................................................... 49TIME-OUT TIMER ........................................................................................ 51BUSY CHANNEL LOCKOUT........................................................................ 51TX INHIBIT ................................................................................................... 52MICROPHONE SENSITIVITY ...................................................................... 52PROGRAMMABLE FUNCTION KEYS ......................................................... 52MICROPHONE KEY LOCK .......................................................................... 53BATTERY TYPE ........................................................................................... 53WEATHER ALERT (TH-K20A K TYPE ONLY) ................................................. 54WEATHER ALERT ON/ OFF ........................................................................ 54WEATHER CHANNEL .................................................................................. 54WEATHER CHANNEL SCAN ....................................................................... 54APPENDIX ......................................................................................................... 55OPTIONAL ACCESSORIES ......................................................................... 55MAINTENANCE ............................................................................................ 55TROUBLESHOOTING .................................................................................. 56TRANSCEIVER RESET ............................................................................... 58SPECIFICATIONS ........................................................................................ 59