Kenwood NX-840 Operation Manual - Page 18

BACKGROUND OPERATIONS TIME-OUT TIMER (TOT) The Time-out Timer is used to prevent you from using a channel for an extended duration. If you continuously transmit for a preset time, the transceiver will stop transmitting and a warning tone will sound. Release the PTT switch to stop the tone. AUXILIARY PORT Press the key programmed as [AUX] to activate the auxiliary port. The auxiliary port is used with optional boards. • "AU" appears on the display for 1 second. DISPLAY BRIGHTNESS You can cycle the display brightness between high, low, and off by pressing the key programmed as [LED Brightness]. DIRECT ZONE CHANNEL Press the key programmed as [Direct Zone-Channel] to immediately select the lowest channel of the lowest zone. BUSY CHANNEL LOCKOUT (BCL) When activated, BCL prevents you from interfering on a channel that is already in use. Pressing the PTT switch will cause a warning tone to sound and the transceiver will not transmit. Release the PTT switch to stop the tone. Note: Ask your dealer for an explanation on how BCL functions when using QT, DQT, RAN, or Optional signaling. If BCL Override has been programmed, you can transmit over the current signal: 1 Press and hold the PTT switch. • If the channel is already in use, a warning tone will sound. 2 Quickly release and then press the PTT switch again. 3 Speak into the transceiver as you would during a normal call. PTT ID PTT ID is the transceiver unique ID code which is sent each time the PTT switch is pressed and/or released. Note: PTT ID can be made only in analog operation. COMPANDER If programmed by your dealer for a channel, the compander will remove excessive noise from transmitted signals, to provide higher clarity of signals. Note: The compander is used only in analog operation. VOICE ANNOUNCEMENT When changing the zone/ channel, an audio voice will announce the new zone/ channel number. 14