114BASIC OPERATION4n Adjusting the squelch levelTo adjust the IC-M71’s squelch level, use the [Y]/[Z] keysas desred below. In order to receve sgnals properly, as wellas for the scan to functon effectvely, the squelch must beadjusted to the proper level.q Push [ ], then adjust the squelch level wth [Y]/[Z].- “SQL” and the squelch level are dsplayed.- There are 11 squelch levels to choose from: OP s completelyopen; 10 s tght squelch; 1 s loose squelch level.- When no key s pushed for 5 sec., the transcever returns tonormal condton.w Push [ ] agan to return to normal operatng mode.Push Shows the squelchlevel.Appears during squelchlevel adjustmentn Backlighting functionThs functon s convenent for nght-tme operaton. The back-lghtng can be turned OFF n the SET mode. (p. 19)➥ Push any key other than [PTT] to turn the backlghtngON.• The backlghtng s automatcally turned OFF after 5 sec. ofnactvty.n Voice scrambler operation(avalable wth some versons only)D Activating the scramblerThe voce scrambler provdes prvate communcatons. Inorder to receve or send scrambled transmssons, you mustactvate the scrambler functon first.q Select an operatngchannel other thanChannel 16 or 70.w Whle pushng andholdng [ ], push[SCAN•DUAL].• “SCRM” appears.e To turn the scramblerfuncton OFF, repeatstep w.• “SCRM” dsappears.D Programming scramble codesThere are 32 codes (1 to 32) avalable for programmng. Setthe code n the SET mode. In order to understand each other,all transcevers n your group must use the same scram-ble code, as well as the same scrambler unt. See p. 22 for“Scrambler code” settng detals.Appears when the voice scramblerfunction is in use.