Icom IC-M502 Marine Radio User Manual


 
3
BASIC OPERATION
10
Optional voice scrambler operation
Activating the scrambler
The optional voice scrambler provides private communica-
tions. In order to receive or send scrambled transmissions
you must first activate the scrambler function. To activate the
function, an optional UT-98 or UT-112 is necessary. See p. 33
for selecting the unit. Ask your dealer for details.
The scrambler function automatically turns OFF when
channel 16 or 70 is selected.
q Select an operating channel other than channel 16 and 70.
w While pushing [HI/LO], push [LO/DX•IC/SCR] to toggle an
optional scrambler function ON or OFF.
•“SC” appears.
e To turn the scrambler function OFF, repeat step w.
•“SC” disappears.
Programming scrambler codes
There are 128 or 32 codes (0 to 127 or 1 to 32) available for
programming when the optional UT-98 or UT-112 is installed.
In order to understand one another, all transceivers in your
group must have the same scramble code. This function may
not be available depending on dealer setting.
q Turn power OFF.
w While pushing [16•9], turn power ON to enter set mode.
e After the display appears, release [16•9].
r Push [16•9] 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
POWER
+
916 916
Select code
Push one or
more times.
Set mode Scrambler code item
[Example]: Programming scrambler code 127.