Icom IC-GM1600 Instruction Manual - Page 17

SET MODE 5 I SET mode items D Beep tone function "bP" You can select silent operation by turning the beep tones OFF, or you can have 2 types of confirmation beeps sound at the push of a key. When "ON" is selected, a fixed beep (Pi) sounds, and when "US" is selected, the preset beeps (e.g. do, re, mi) sound. • Beep tone synchronizes with the volume level. • The beeps sound during call channel programming even if this func- tion is turned OFF. Push Beep tone ON (default) Beep tone OFF D Monitor switch action "Sq" The monitor switch action cuts off the squelch function temporarily. This switch action contains PUSH (Pu) or HOLD (Ho) settings as shown below. • PU (PUSH): After pushing [SQL•MONI] for 1 sec., the squelch opens and emits audio. The squelch is held open while continuously pushing and holding [SQL•MONI]. (default) • HO (HOLD): After pushing [SQL•MONI] for 1 sec., the squelch opens and emits audio even if [SQL•MONI] is released. To close the squelch, push any switch. Push PUSH setting (default) HOLD setting D Backlighting function "bL" This function is convenient for nighttime operation. The back- lighting brightness can be adjusted from OFF, 1 (dark)-3 (bright); 3 (default). Select 1-3 to turn this function ON. • The automatic backlighting turns the backlighting ON when any 5 switch except for [PTT] is pushed. • The backlighting is automatically turned OFF after 5 sec. of inactivity. Push Backlighting ON (default) Backlighting OFF D LCD contrast selection "LC" The contrast of the LCD can be adjusted from 4 levels. • 1 (bright)-4 (dark); 3 (default) Middle contrast (default) Push Low contrast 12