I Optional Voice Scrambler Operation; Basic Operation - Icom IC-M604 Instruction Manual

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BASIC OPERATION

I Optional Voice scrambler operation

D D Activating the scrambler function
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 func-
tion, an optional scrambler unit is necessary. See pgs. 45 and
50 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 [SELECTOR] to select the desired channel other
than Channel 16 and 70.
w Push [F], then push [0•
bler function ON.
• "S S C C R R A A M M " appears.
e To turn the scrambler function OFF, repeat step w.
• "S S C C R R A A M M " disappears.
[Example]: Programming scrambler code 8.
Push
˘Scan Type
9
Scan Timer
16
+ POWER
WX Alert
Beep
to enter
Internal Speaker Internal
Contrast Contrast
Set mode
RF Attenuator
12
SCRM ] to turn the Voice scram-
--Set Mode--
Rotate
Timer
to select item.
Attenuator
≥
D 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 func-
tion may not be available depending on dealer setting.
*Depends on the installed scrambler unit.
q While pushing and holding [!6 • 9], push [POWER] to enter
Set mode.
• Turn power OFF in advance.
w After the display appears, release [!6 • 9].
e Rotate [SELECTOR] to select the "S S c c r r a a m m b b l l e e r r C C o o d d e e ,"
push [ENT].
r Rotate [SELECTOR] to select the desired scrambler code.
t Push [ENT] to set and exit the scrambler code item.
y Push [CLR], or rotate [SELECTOR] to select "E E x x i i t t ,"
then push [ENT] to exit Set mode.
--Set Mode--
Internal Speaker
≤
Contrast
RF Attenuator
Foghorn Frequency Frequency
Radio Power
Scrambler Type
to select code.
˘Scrambler Code
≥
Select
Push
--Set Mode--
Rotate Scrambler Code
˘5
Select
4
3
2
<ENT˘OK>
Push
≤
≥