Icom IC-M504A, Instruction Manual

Page: 17 / 80

11
3
BASIC OPERATION
■
Optional voice scrambler operation
D Activating the scrambler
The optional voice scrambler provides private communications.
In order to receive or send scrambled transmissions you must
first activate the scrambler function. To activate the function, an
optional scrambler unit is necessary. See page 61 for setting
the scrambler unit. Ask your dealer for details.
The scrambler function automatically turns OFF when
Channel 16 or 70 is selected.
q
Rotate [DIAL] to select the desired channel other than
Channel 16 and 70.
w
While holding down [H/L], push [LO/DX•IC•SCRM] to turn
ON the optional Voice Scrambler function.
• “
SCRAM
” appears.
e
To turn OFF the function, repeat step
w
.
• “
SCRAM
” disappears.
D Programming scrambler codes
There are 32 codes (1 to 32) or 128 codes (0 to 127)* avail-
able for programming when an optional scrambler unit is in-
stalled. 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 the dealer setting.
*Depends on the installed scrambler unit.
q
Turn the power OFF, then while holding down [16•9], push
[POWER] to enter the Set mode.
w
After the display appears, release
[16•9].
e
Rotate [DIAL] to select the “
Scrambler Code
,” the
push
[DIAL•ENTER].
r
Rotate [DIAL] to select the desired scrambler code.
t
Push
[DIAL•ENTER] to set and exit the scrambler code item.
y
Push [CLR], or rotate [DIAL] to select “
Exit
,” then push
[DIAL•ENTER] to exit Set mode.
--Set Mode--
Scrambler Code
˘5
4
3
2
1
<ENT OK>
--Set Mode--
Dual/Tri
Beep
Contrast
Foghorn Frequency
Radio Power
Scrambler Type
˘Scrambler Code
--Set Mode--
˘Scan Type
Scan Timer
WX Alert
Dual/Tri
Beep
Contrast
Foghorn Frequency
+
to enter Set mode.
Push
to select code.
Rotate
to select item.
Rotate
Select
Select
Push Push
[Example]: Programming scrambler code 5.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16