Icom IC-F3031S / F4031S Instruction Manual - Page 12

2 PANEL DESCRIPTION TALK AROUND KEY Push to turn the talk around function ON and OFF. • T he talk around function equalizes the transmit frequency to the receive frequency for transceiver-to-transceiver communication. WIDE/NARROW KEY Push to toggle the IF bandwidth between wide and narrow. DTMF AUTODIAL KEY ➥ P ush to enter the DTMF channel selection mode. Then se- lect the desired DTMF channel using [CH Up]/[CH Down]. ➥ A fter selecting the desired DTMF channel, push this key to transmit the DTMF code. RE-DIAL KEY Push to transmit the last-transmitted DTMF code. CALL KEYS Push to transmit a 2-tone. • C all transmission is necessary before you call another station de- pending on your signaling system. • [Call A] and/or [Call B] may be available when your system em- ploys selective 'Individual/Group' calls. Ask your dealer which call is assigned to each key. LONE WORKER KEY Push to turn the Lone Worker function ON or OFF. • If the Lone Worker function is activated, the Emergency function is automatically turned ON after the specified time period has passed with no operation is performed. TX CODE CHANNEL UP/DOWN KEYS Push to select a TX code channel directly. EMERGENCY KEY Push and hold to transmit the emergency call. • The transceiver can transmit the emergency call silently or audibly depending on the presetting. Ask your dealer for details. • When the emergency call transmits with beeps, the emergency text is displayed on the LCD if programmed. • If you want to cancel the emergency call, push and hold the key again before transmitting the call. • The emergency call is transmitted one time only or repeatedly until receiving a control code, depending on the presetting. SURVEILLANCE KEY Push to turn the surveillance function ON or OFF. When this function is turned ON, the beep is not emitted and the LCD backlight does not light when a signal is received or a key is pushed, etc. TX CODE CHANNEL SELECT KEY Push to enter the ID code channel selection mode directly. Then set the desired channel using [CH Up]/[CH Down]. (p. 11) USER SET MODE KEY ➥ P ush and hold for 1 second to enter user set mode. • During in the user set mode, push this key to select an item that is enabled by your dealer, and change the value or condition by pushing [CH Up] or [CH Down]. ➥ P ush and hold this key for 1 second again to exit user set mode. User set mode is also available via the 'Power ON function.' Refer to page 8 also. 7