Basic Operation ............ 6; Optional Voice Scrambler Operation - Icom IC-M502 Instruction Manual

3
BASIC OPERATION

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.
[Example]: Programming scrambler code 127.
16 9 +
POWER
Enter set mode
10
Set mode
Push one or
Beep
more times.
Set mode
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
16 9
Scrambler
code
Scrambler code item
Set mode
Scrambler
Select code
code