Icom IC-M503 Marine Radio User Manual


 
3
BASIC OPERATION
10
Optional voice scrambler operation
ïï
Activating the scrambler
The optional voice scrambler provides private communica-
tions. In order to receive or send scrambled transmissions
you must rst activate the scrambler function. To activate the
function, an optional UT-98 or UT-112 is necessary. See p. 16
for selecting the unit. Ask your dealer for details.
q Select an operating channel other than Channel 16 and
70.
w While pushing and holding [HI/LO], push [DIMMER] to tog-
gle an optional scrambler function ON or OFF.
•“SC appears.
e To turn the scrambler function OFF, repeat step w.
•“SC disappears.
ïï
Programming scrambler codes
There are 128 or 32 codes (0 to 127 or 1 to 32) available for
programming. In order to understand one another, all trans-
ceivers in your group must have the same scramble code.
This function may not be available depending on dealer set-
ting.
q Turn power OFF.
w While pushing and holding [16], turn power ON to enter
set mode.
e After the display appears, release [16].
r Push [16] one or more times to select the scrambler code
item.
•“Scrambler code appears.
t Rotate the channel selector to select the desired scram-
bler code.
y Turn power OFF, then ON again to exit set mode.
Setmode
Beep
Setmode
Scrambler
code
Setmode
Scrambler
code
Enter set mode
16
POWER
+
Select code
16
Push one or
more times.
Set mode Scrambler code item
[Example]: Programming scrambler code 127.
01 IC-M503-(1).qxd 01.12.17 5:00 PM Page 10 (1,1)