Icom IC-M503 ï Programming scramble codes, Call channel programming, ï Activating the scrambler

■Call channel programming

qWhile pushing and holding [H/L],

push [DIAL] several times to select the desired channel group (USA or INT) to be programmed.

w Push and hold [16•C] for 1 sec. to select the call channel of the se- lected channel group.

• “CALL” and call channel number ap- pear.

e Push and hold [16•C] again for 3 sec. (until long beep changes to 2 short beeps) to enter call channel programming condition.

•Call channel number and channel

group to be programmed flashes.

r Push [Y]/[Z] to select the desired channel.

t Push [16•C] to program the dis- played channel as the call channel.

• The call channel number and channel group stop flashing.

HM-134 REMOTE-CONTROL MICROPHONE 12

■Optional voice scrambler operation

ïActivating the scrambler

qSelect an operating channel, other than Channel 16. w While pushing and holding

[H/L], push [DUAL] to turn

the voice scrambler function ON.

• “SCRM” appears.

e To turn the scrambler func-

tion OFF, repeat step w.
	Appears when the voice
• “SCRM” disappears.
	scrambler function is in use.

ïProgramming scramble codes

There are 128 codes (00 to 127) available with UT-98 or 32 codes (01 to 32) available with the UT-112 for programming. In order to understand one another, all transceivers in your group must have the same scrambler code, as well as the same scrambler unit. The scrambler code is programmed in set mode. See pgs. 10, 16, 37 for details.

35